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A Comparative Study of the Accuracy of Machine Learning Models for Predicting Tempered Martensite Hardness According to Model Complexity
기계학습 모델 복잡도에 따른 템퍼드 마르텐사이트 경도 예측 정확도 비교 연구
Junhyub Jeon, DongEung Kim, Jun-Ho Hong, Hwi-Jun Kim, Seok-Jae Lee
전준협, 김동응, 홍준호, 김휘준, 이석재
Korean J. Met. Mater. 2022;60(9):713-721.   Published online 2022 Aug 30
DOI: https://doi.org/10.3365/KJMM.2022.60.9.713

We investigated various numerical methods including a physical-based empirical equation, linear regression, shallow neural network, and deep learning approaches, to compare their accuracy for predicting the hardness of tempered martensite in low alloy steels. The physical-based empirical equation, which had been previously proposed with experimental data, was labelled and used..... More

Improvement of Photoelectrochemical Properties of CuO Photoelectrode by Li Doping
Li 도핑에 따른 CuO 광전극의 광전기화학적 특성 개선 연구
Seongchan Bae, Sunghyeok Lee, Hyukhyun Ryu, Won-Jae Lee
배성찬, 이성혁, 류혁현, 이원재
Korean J. Met. Mater. 2022;60(8):577-586.   Published online 2022 Jul 12
DOI: https://doi.org/10.3365/KJMM.2022.60.8.577

We fabricated a Li doped CuO photoelectrode by doping CuO with Li to improve the photoelectrochemical properties of the CuO photoelectrode. The fabricated Li doped CuO photoelectrode was optimized by experimentally investigating Li doping concentration, annealing temperature, and spin coating deposition cycle. It was confirmed that Li doped CuO had..... More

Properties of Perovskite Solar Cells with Low Temperature Sintered SnO<sub>2</sub> Electron Transport Layers
저온 소결 처리된 SnO2 전자전달층을 가진 페로브스카이트 태양전지의 물성
Hojun Kim, Yongwook Lee, Yeongjun Oh, Kwangbae Kim, Ohsung Song
김호준, 이용욱, 오영준, 김광배, 송오성
Korean J. Met. Mater. 2022;60(7):545-550.   Published online 2022 Jun 3
DOI: https://doi.org/10.3365/KJMM.2022.60.7.545

This study investigated the photovoltaic properties and microstructure of perovskite solar cells (PSCs) with an ITO/SnO2/perovskite/HTL/Au electrode configuration, developed with varying sintering temperatures (100~200°C). The goal was to use SnO2 ink as the electron transport layer (ETL) by low-temperature sintering. TGA-DTA analysis was conducted to determine the optimum sintering temperature..... More

A Study on the Interrelationship between the Microstructural Features and the Elevated Temperature Strength of Multicomponent Al-Si-Cu-Ni Casting Alloys
다성분계 Al-Si-Cu-Ni 합금의 미세조직적 인자와 고온강도의 상관관계에 대한 연구
Min-Su Jo, Young-Hee Cho, Jung-Moo Lee, Soo-Bae Kim, Su-Hyeon Kim, Jae-il Jang
조민수, 조영희, 이정무, 김수배, 김수현, 장재일
Korean J. Met. Mater. 2022;60(7):489-501.   Published online 2022 Jun 3
DOI: https://doi.org/10.3365/KJMM.2022.60.7.489

The elevated temperature strength of multicomponent Al-Si alloys is greatly affected by the volume fraction and the interconnectivity of hard phases formed upon solidification. In the present investigation, such influences were examined for two Al-Si-Cu-Ni alloys with different total volume fractions of hard phases. To control the microstructural features related..... More

Development of 1.2 GPa Ferrite-based Lightweight Steels via Low-temperature Tempering
저온 템퍼링을 이용한 1.2 GPa급 페라이트계 경량철강 개발
Hyo Ju Bae, Kwang Kyu Ko, Hyoung Seok Park, Jae Seok Jeong, Jung Gi Kim, Hyokyung Sung, Jae Bok Seol
배효주, 고광규, 박형석, 정재석, 김정기, 성효경, 설재복
Korean J. Met. Mater. 2021;59(10):683-691.   Published online 2021 Sep 6
DOI: https://doi.org/10.3365/KJMM.2021.59.10.683

Previously reported low-Mn ferritic-based lightweight steels are potential candidates for industrial applications, however, they typically exhibit lower strength, with < 1 GPa and lower strength-ductility balance, than medium- and high-Mn austenitic lightweight steels. Herein, we introduce a low-temperature tempering-induced partitioning (LTP) treatment that avoids the strength-ductility dilemma of low-Mn ferriticbased..... More

Low Temperature Growth of One-Dimensional Al and Al<sub>2</sub>O<sub>3</sub> Nano/Micro-Structures Using Al and SnO<sub>2</sub> Powder Mixture
Al과 SnO2 혼합 분말을 사용한 일차원 Al과 Al2O3 나노/마이크로구조의 저온 성장
Geun-Hyoung Lee
Korean J. Met. Mater. 2021;59(9):677-681.   Published online 2021 Aug 4
DOI: https://doi.org/10.3365/KJMM.2021.59.9.677

One-dimensional Al and Al2O3 nano/microstructures were fabricated via thermal oxidation of Al and SnO2 powder mixtures at temperatures below the melting point of Al (660 oC). Furthermore, the synthesis process was carried out in air at atmospheric pressure, which made the process very simple and easy. Sn metal particles with..... More

Effect of Low Transformation Temperature Welding Consumable on Microstructure, Mechanical Properties and Residual Stress in Welded Joint of A516 Carbon Steel
Sungki Choi, Junsang Lee, Jae-Yik Lee, Seung-Kyun Kang, Young-Cheon Kim, Seung-Joon Lee, Dongil Kwon
Korean J. Met. Mater. 2021;59(8):524-532.   Published online 2021 Jul 5
DOI: https://doi.org/10.3365/KJMM.2021.59.8.524

The microstructure, mechanical properties and residual stress of flux-cored arc welded ASTM A516-70N carbon steel using a Mn-based low-temperature transformation (LTT) welding consumable were investigated. Microstructural analysis with X-ray diffraction, an electron backscattered diffractometer and a field-emission scanning electron microscope showed that the LTT weld metal was made up of..... More

                           Cited By 1
Preparation of Li-Doped Indium-Zinc Oxide Thin-Film Transistor at Relatively Low Temperature Using Inkjet Printing Technology
잉크젯 인쇄 기술을 이용하여 상대적으로 낮은 온도에서 리튬이 도핑 된 인듐-아연-산화물 트랜지스터의 제작
Woon-Seop Choi
Korean J. Met. Mater. 2021;59(5):314-320.   Published online 2021 Apr 6
DOI: https://doi.org/10.3365/KJMM.2021.59.5.314

Inkjet printing is a very attractive technology for printed electronics and a potential alternative to current high cost and multi-chemical lithography processes, for display and other applications in the electronics field. Inkjet technology can be employed to fabricate organic light emitting diodes (OLED), quantum dots displays, and thin-film transistors (TFTs)...... More

                           Cited By 3
Fabrication and Surface Deformation of Boron Nitride Nanotubes by RF Plasma and Ion Beam
Seong Min Hong, Jae Geun Gil
Korean J. Met. Mater. 2021;59(4):268-272.   Published online 2021 Mar 24
DOI: https://doi.org/10.3365/KJMM.2021.59.4.268

Boron Nitride Nanotubes (BNNT) are one of the candidate materials for storing hydrogen by physical adsorption. It has been reported that this hydrogen storage capacity increases as the crystallinity of the nanostructures decreases. Here, BNNT was synthesized using an RF plasma torch system, and the surface of the BNNT was..... More

                           Cited By 1
Integrity Assessment of Obsolete Thermal Storage Tank in District Heating System
지역난방 노후 축열조의 부식 건전성 평가 및 고찰
Daeho Yun, Hobyung Chae, Heesan Kim, Jung-Gu Kim, Woo Cheol Kim, Tae Baek Ha, Jaehyuk Jang, Joon Cheol Jeong, Soo Yeol Lee
윤대호, 채호병, 김희산, 김정구, 김우철, 하태백, 장재혁, 정준철, 이수열
Korean J. Met. Mater. 2020;58(10):693-702.   Published online 2020 Oct 5
DOI: https://doi.org/10.3365/KJMM.2020.58.10.693

The thermal storage tank in a district heating system is a component that stores excess heat during normal operation and releases the stored heat to increase the efficiency of the system, when the heat source is stopped or additional demands occur. Recently, an obsolete thermal storage tank was dismantled for..... More

A study on the Microstructures and the Suppression of Grain Growth in Rapidly Solidified Fe-Si-B(-Cu-Zr-Ca) Base Nanostructured Alloys
급속응고된 Fe-Si-B(-Cu-Zr-Ca)계 나노결정 합금의 미세조직과 결정립성장 억제에 관한 연구
Hyun Ah Im, Jun Young Jeong, Su Bong An, Keun Yong Sohn, Won-Wook Park
임현아, 정준영, 안수봉, 손근용, 박원욱
Korean J. Met. Mater. 2020;58(9):633-638.   Published online 2020 Aug 19
DOI: https://doi.org/10.3365/KJMM.2020.58.9.633

Magnetic induction and resonance wireless power charging generally operates in a high frequency range, and its efficiency is degraded by the generation of heat at high frequency. This makes it necessary to develop new soft magnetic materials capable of maintaining their characteristics even at high frequency. The purpose of this..... More

                           Cited By 2
Evaluation of Transition Temperature in Reactor Pressure Vessel Steels 6using the Fracture Energy Transition Curve from a Small Punch Test
소형펀치 파단에너지 천이곡선을 활용한 원자로용기강의 천이온도 평가
Tae-kyung Lee, Seokmin Hong, Jongmin Kim, Min-Chul Kim, Jae-il Jang
이태경, 홍석민, 김종민, 김민철, 장재일
Korean J. Met. Mater. 2020;58(8):522-532.   Published online 2020 Jul 27
DOI: https://doi.org/10.3365/KJMM.2020.58.8.522

The small punch (SP) test is one of the small specimen test techniques, and standardization of the SP test method for evaluating the mechanical properties of metallic materials is in progress. In this study, the impact transition temperature of reactor pressure vessel steels (RPV) in nuclear power plants was estimated..... More

Microstructures and Oxidation Behaviors of Silicide Coated Nb Alloys by Halide Activated Pack Cementation Process
Halide activated pack cementation에 의한 silicide 코팅층의 형성에 따른 Nb 합금의 산화거동
Wonchul Yang, Choong-Heui Chung, Sangyeob Lee, Kyeong Ho Baek, Youngmoo Kim, Seong Lee, Joon Sik Park
양원철, 정중희, 이상엽, 백경호, 김영무, 이성, 박준식
Korean J. Met. Mater. 2020;58(8):507-514.   Published online 2020 Aug 5
DOI: https://doi.org/10.3365/KJMM.2020.58.8.507

In this study, we tried to improve the oxidation resistance of Nb-12Si (wt%) alloys at 1200 °C or higher through pack cementation coatings. Nb-12Si (wt%) alloys were prepared by arc-melting under Ar atmosphere. When the alloys were coated using pack powder mixtures composed of Si, Al2O3 and NaF, two silicide..... More

Effect of Co Leaching on the Vertical Turning Lathe Wear Properties of Polycrystalline Diamond Compact Manufactured by High Temperature and High Pressure Sintering Process
초고온·고압 소결 공정으로 제조된 다결정 다이아몬드 컴팩트(PDC)의 VTL 마모 특성에 미치는 Co 제거의 영향
Min-Seok Baek, Ji-Won Kim, Bae-Gun Park, Hee-Sub Park, Kee-Ahn Lee
백민석, 김지원, 박배건, 박희섭, 이기안
Korean J. Met. Mater. 2020;58(7):480-487.   Published online 2020 Jul 5
DOI: https://doi.org/10.3365/KJMM.2020.58.7.480

Polycrystalline diamond compact (PDC) has excellent wear resistance, high impact resistance, superior fatigue properties, and has been used in the oil and gas drilling industries. This study investigated the effect of Co leaching on the microstructure, vertical turning lathe (VTL) wear properties of PDCs manufactured by high-temperature and high-pressure (HTHP)..... More

Optical Properties of CaF<sub>2</sub> Anti-Reflection Coating On ZnS for 8~12 m Infrared Region
CaF2 저반사 코팅된 ZnS 윈도우의 8~12 µm 적외선 영역 광학적 특성
Ill-Joo Lee, Seung-Chan Hong, Byung-Sam Kim, Jae-Kyung Cheon
이일주, 홍승찬, 김병삼, 천재경
Korean J. Met. Mater. 2020;58(6):433-438.   Published online 2020 May 19
DOI: https://doi.org/10.3365/KJMM.2020.58.6.433

Technologies for pedestrian safety are increasingly emphasized by Automakers in advance of autonomous driving vehicles. A Night Vision System attached behind the front grille can reduce fatal accidents, especially during the nighttime, however, consumers may hesitate to adopt such systems on account of their high price. High-cost Germanium is used..... More

                           Cited By 1
Effect of Bainitic Microstructure on Low-Temperature Toughness of High-Strength API Pipeline Steels
고강도 API 라인파이프강의 저온 인성에 미치는 베이나이트계 미세조직의 영향
Seung-Wan Lee, Sang-In Lee, Byoungchul Hwang
이승완, 이상인, 황병철
Korean J. Met. Mater. 2020;58(5):293-303.   Published online 2020 Apr 20
DOI: https://doi.org/10.3365/KJMM.2020.58.5.293

In this study the correlation between bainitic microstructure and the low-temperature toughness of high-strength API pipeline steels was discussed in terms of crack initiation and propagation in the microstructure. Three types of API pipeline steels with different bainitic microstructures were fabricated using varying alloying elements and thermo-mechanical processing conditions, and..... More

                           Cited By 6
Effects of Growth Temperature on the Physicochemical and Photoelectrochemical Properties of a Modified Chemical Bath Deposited Fe<sub>2</sub>O<sub>3</sub> Photoelectrode
개선된 화학 용액 증착법 성장 온도에 따른 Fe2O3 광전극의 물리화학적 및 광전기화학적 특성 연구
Yaejin Hong, Seung-Hwan Jeon, Hyukhyun Ryu, Won-Jae Lee
홍예진, 전승환, 류혁현, 이원재
Korean J. Met. Mater. 2020;58(4):263-271.   Published online 2020 Mar 10
DOI: https://doi.org/10.3365/KJMM.2020.58.4.263

In this study, Fe2O3 photoelectrode thin films were grown on fluorine-doped tin oxide substrates at various temperatures ranging from 145 to 220 oC using modified chemical bath deposition. The morphological, structural, electrical, and photoelectrochemical properties of the resulting Fe2O3 photoelectrode were analyzed using field emission scanning electron microscopy, X-ray diffraction,..... More

                           Cited By 2
Effect of Annealing Temperature on the Shape Memory Properties of Ti-44.5Ni-5Cu and Ti-45.2Ni-5Cu(at%) Alloys
Ti-44.5Ni-5Cu 및 Ti-45.2Ni-5Cu(at%) 합금의 형상기억특성에 미치는 어닐링온도의 영향
Jae Il Kim, Kwang Sun Hwang
김재일, 황광선
Korean J. Met. Mater. 2019;57(9):562-568.   Published online 2019 Aug 21
DOI: https://doi.org/10.3365/KJMM.2019.57.9.562

The effect of annealing temperature on shape memory properties in the Ti-44.5Ni-5Cu and Ti-45.2Ni-5Cu(at%) alloys was investigated by differential scanning calorimeter (DSC) and tensile testing. The martensitic transformation temperature of Ti-44.5Ni-5Cu(at%) increased from 308K to 324K with increasing annealing temperature and did not change with further increasing annealing temperature. This..... More

                           Cited By 2
Effect of Rolling Temperature on the Microstructural Characteristics of High-Speed-Rolled Mg Alloy with Initial Non-Basal Texture
비기저면 집합조직을 가지는 마그네슘 합금의 고속압연 온도 변화에 따른 압연재 미세조직 변화
Su Jin Lee, Ye Jin Kim, Jeong Hun Lee, Sung Hyuk Park
이수진, 김예진, 이정훈, 박성혁
Korean J. Met. Mater. 2019;57(8):482-490.   Published online 2019 Jul 4
DOI: https://doi.org/10.3365/KJMM.2019.57.8.482

In this study, the effects of rolling temperature on the microstructural characteristics of a highspeed-rolled Mg alloy with a non-basal texture were investigated. To this end, commercial AZ31 alloy samples in which the basal poles of most grains were tilted at an angle of 45° from the normal direction (ND)..... More

Effect of Carbides Formed in 9Cr-1Mo-V-Nb Weld Metals on Elevated Temperature Tensile Strength
9Cr-1Mo-V-Nb 용착금속에서 생성된 탄화물이 고온 인장강도에 미치는 영향
Byungrok Moon, Junghoon Lee, Namhyun Kang, Taeho Lee, Woosang Jung, Chulgyu Park, Kyungmox Cho
문병록, 이정훈, 강남현, 이태호, 정우상, 박철규, 조경목
Korean J. Met. Mater. 2019;57(7):422-429.   Published online 2019 Jun 5
DOI: https://doi.org/10.3365/KJMM.2019.57.7.422

Alloy design of 9Cr-1Mo-V-Nb weld metals was carried out through thermodynamic simulation, and elevated temperature tensile testing was performed on the designed alloy. Based on the thermodynamic simulation of the 9Cr-1Mo-V-Nb weld metal, 0.09 to 0.10 wt% C was added to increase Cr-rich M23C6. Nitrogen was reduced from 0.04 to..... More

Room and Elevated Temperature Compressive Deformation Behavior of AISI 316L Alloy Fabricated by Selective Laser Melting Process
Selective laser melting 공정으로 제조된 AISI 316L 합금의 상온 및 고온 압축 변형 거동
Gi-Su Ham, Soon-Hong Park, Kee-Ahn Lee
함기수, 박순홍, 이기안
Korean J. Met. Mater. 2019;57(5):295-303.   Published online 2019 May 5
DOI: https://doi.org/10.3365/KJMM.2019.57.5.295

This study investigated the microstructure and compressive properties (at room & high temperatures) of Fe-Cr-Ni based AISI 316L alloy, manufactured by selective laser melting process. The effect of stress relieving heat treatment on the microstructure and mechanical properties also examined. Regardless of the stress relieving heat treatment, the SLMed AISI..... More

                           Cited By 2
Investigation of the Texture and Dislocation Behavior of AZ31 Magnesium Alloy Under Different Strain Rate Conditions
변형률 속도에 따른 AZ31 Mg 합금의 집합조직 및 전위 거동 관찰
Dong-Gi Lee, Jun-Beom Kwon, Hyun-Jong Lee, Su-Mi Jo, Young-Mok Rhyim, Won-Jon Yang, Yang-do Kim
이동기, 권준범, 이현종, 조수미, 임영목, 양원존, 김양도
Korean J. Met. Mater. 2019;57(5):279-288.   Published online 2019 May 5
DOI: https://doi.org/10.3365/KJMM.2019.57.5.279

This study is concerned with the influence of strain rate on the plastic deformation behavior and microstructure variables of AZ31 magnesium alloy sheet. The tensile properties were measured at room temperature at a strain rate of 0.001 and 100 s–1 using a universal tensile testing machine and servo-hydraulic high-speed tensile..... More

                           Cited By 1
Effects of Exposure Temperature on Tensile and Charpy Impact Properties of the 7xxx Aluminum Alloy for Aerospace Applications
항공용 7xxx계 알루미늄 합금의 고온 노출 온도가 인장 및 샤르피 충격 특성에 미치는 영향
Woojin An, Dohee Kim, Bong-Hwan Kim, Shae Kwang Kim, Sangshik Kim, Hyokyung Sung
안우진, 김도희, 김봉환, 김세광, 김상식, 성효경
Korean J. Met. Mater. 2019;57(4):214-226.   Published online 2019 Apr 5
DOI: https://doi.org/10.3365/KJMM.2019.57.4.214

Aluminum alloys have been widely used for aerospace applications due to their high strength and lightweight. New demand is growing for aluminum alloys with high temperature mechanical properties that can sustain plastic deformation at high temperature. In this study, correlations among microstructure, tensile properties and Charpy impact properties were analyzed..... More

                           Cited By 3
Influence of Boron and Manganese on Hot Crack Resistance and Low Temperature Toughness of Flux Cored Arc Weld Metal for High Strength Carbon Steels
고강도 탄소강 FCA 용착금속의 고온균열 저항성과 저온 충격인성에 미치는 보론과 망간의 영향
Su-Kil Park, Young-Ho Cho, Chun-Ho Jee, Junghoon Lee, Seong-Moon Seo, Namhyun Kang
박수길, 조영호, 지춘호, 이정훈, 서성문, 강남현
Korean J. Met. Mater. 2019;57(1):28-37.   Published online 2018 Dec 14
DOI: https://doi.org/10.3365/KJMM.2019.57.1.28

The hot crack resistance and mechanical properties of flux cored arc (FCA) welds were investigated with three kinds of welding consumables having different boron (B) and manganese (Mn) contents for high strength carbon steel. The hot crack resistance, measured from self-restraint testing, strongly depended on the amount of B in..... More

                           Cited By 3
Comparative Study of Estimation Methods of the Endpoint Temperature in Basic Oxygen Furnace Steelmaking Process with Selection of Input Parameters
Tae Chang Park, Beom Seok Kim, Tae Young Kim, Il Bong Jin, Yeong Koo Yeo
Korean J. Met. Mater. 2018;56(11):813-821.   Published online 2018 Nov 5
DOI: https://doi.org/10.3365/KJMM.2018.56.11.813

The basic oxygen furnace (BOF) steelmaking process in the steel industry is highly complicated, and subject to variations in raw material composition. During the BOF steelmaking process, it is essential to maintain the carbon content and the endpoint temperature at their set points in the liquid steel. This paper presents..... More

                           Cited By 5
Effects of Tempering Condition on the Microstructure and Mechanical Properties of 30MnB5 Hot-Stamping steel
핫스탬핑용 30MnB5강의 템퍼링 조건에 따른 미세조직 및 기계적 물성 연구
Junyeong Jeong, Sang-Cheon Park, Ga-Young Shin, Chang Wook Lee, Tae-Jeong Kim, Min-Su Choi
정준영, 박상천, 신가영, 이창욱, 김태정, 최민수
Korean J. Met. Mater. 2018;56(11):787-795.   Published online 2018 Nov 5
DOI: https://doi.org/10.3365/KJMM.2018.56.11.787

The effects of tempering condition on the microstructure and mechanical properties of 30MnB5 hot stamping steel were investigated in this study. Before the tempering, hot-stamped 30MnB5 steel was composed of only α′-martensite microstructure without precipitates. After the tempering at 180 ℃ for 120 min, nano-sized ε-carbides were precipitated in the..... More

                           Cited By 7
Prediction of Primary Dendrite Arm Spacing with Solidification Velocity and Temperature Gradient during Directional Solidification in CMSX-4 Superalloy
CMSX-4 초내열합금에서 일방향 응고속도와 온도경사의 변화에 따른 1차 수지상 간격 예측
Jongho Shin, Changhoon Sung, Suncheol Kwon, Sukhwan Kwon, Byungmoon Chang, Jehyun Lee
신종호, 성창훈, 권순철, 권석환, 장병문, 이재현
Korean J. Met. Mater. 2018;56(9):674-679.   Published online 2018 Sep 5
DOI: https://doi.org/10.3365/KJMM.2018.56.9.674

Directional solidification experiments were carried out to estimate the effect of solidification velocity and temperature gradient on primary dendrite arm spacing (PDAS) in the Ni-based superalloy, CMSX-4 alloy. The specimens were solidified at velocities of 1, 5, 25, 50 and 100 mm/s under given temperature gradients of 12.5, 18, 23..... More

                           Cited By 2
Evaluation on Reheat Cracking of Multi-pass Weld Metal of YP 690 QT Steel
해양플랜트용 YP 690 MPa급강 다층 용접부의 재열 균열 특성 평가
Yong Taek Shin, Young Ju Jo
신용택, 조영주
Korean J. Met. Mater. 2018;56(8):580-588.   Published online 2018 Aug 5
DOI: https://doi.org/10.3365/KJMM.2018.56.8.580

This study evaluated the relationship between reheat cracking that occurs in the reheated weld zone formed by subsequent multi-pass welding and the preheat/interpass temperature. The multi-pass weldment was YP 690 MPa high-strength steel, which is used in mobile offshore platform units. The welding process was flux-cored arc welding (FCAW), which..... More

Microstructure and Room Temperature Wear Properties of a Ni-Cr-B-Si-C Coating Layer Manufactured by the Laser Cladding Process
Laser Cladding 공정으로 제조된 Ni-Cr-B-Si-C 코팅층의 미세조직 및 상온 마모 특성
Tae-Hoon Kang, Kyu-Sik Kim, Soon-Hong Park, Kee-Ahn Lee
강태훈, 김규식, 박순홍, 이기안
Korean J. Met. Mater. 2018;56(6):423-429.   Published online 2018 Jun 4
DOI: https://doi.org/10.3365/KJMM.2018.56.6.423

A Ni-Cr-B-Si-C coating layer was manufactured on a plate of Fe base alloy using a laser cladding process, and the microstructural and mechanical properties of the laser cladded coating layer and a Ni electroplating layer (used as a reference material) were investigated. To identify the microstructural and mechanical properties, scanning..... More

                           Cited By 5
Characterization of Microstructures and Creep Fracture Characteristics of Dissimilar Metal Welds between Inconel 740H Ni-Based Superalloy and Gr.92 Ferritic Steel
니켈기 Inconel 740H 초내열합금과 고Cr계 Gr.92 내열강의 이종금속 용접부의 미세조직 및 크리프 파단 특성
Kyeong-Yong Shin, Ji-Won Lee, Jung-Min Han, Kyong-Woon Lee, Byeong-Ook Kong, Hyun-Uk Hong
신경용, 이지원, 한정민, 이경운, 공병욱, 홍현욱
Korean J. Met. Mater. 2018;56(5):375-383.   Published online 2018 May 8
DOI: https://doi.org/10.3365/KJMM.2018.56.5.375

Microstructure evolution and the creep fracture characteristics of dissimilar welds between Ni-based superalloy Inconel 740H and High Cr ferritic steel Gr.92 were investigated. The dissimilar welds were fabricated by shielded metal arc (SMA) welding process with Ni-based austenitic Inconel 182 superalloy. Postweld heat treatment at 760 oC for 4 hours..... More

         Cited By 5
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