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Table of Contents | March, 2020  Vol. 58   No.3 Previous Issue | Next Issue | Archive
In this issue:

Research Papers
151 Effect of Post Heat-Treatment on the Microstructure, Tensile and Fatigue Properties of Al 3003 Alloy Manufactured by Strip Casting Process
Strip Casting 공정으로 제조된 Al 3003 합금의 미세조직, 인장 및 피로 특성에 미치는 후열처리 영향
Min-Seok Baek, Kwangjun Euh, Chang-Yeol Jeong, Kee-Ahn Lee
백민석, 어광준, 정창열, 이기안
Korean J. Met. Mater. 2020;58(3):151-161.   Published online 2020 Mar 5
DOI: https://doi.org/10.3365/KJMM.2020.58.3.151

Abstract
Al 3003 alloy was manufactured by strip casting process, and the effect of post heat-treatment on tensile and fatigue properties was investigated. The strip cast Al 300 alloy exhibited a unique globular shaped rapid-cooled solidification structure, and the microstructural characteristic remained after heat-treatment. Asstrip cast (F) and heat-treated (O) alloys..... More

                        
162 A Study on Uniaxial Tensile Deformation Behavior of Superelastic Titanium Alloy
초탄성 티타늄 합금의 인장 변형거동 고찰
Hye-Jin Jeong, Viet Tien Luu, Yong-Ha Jeong, Sung-Tae Hong, Heung Nam Han
정혜진, 르우비엣띠엔, 정용하, 홍성태, 한흥남
Korean J. Met. Mater. 2020;58(3):162-168.   Published online 2020 Mar 5
DOI: https://doi.org/10.3365/KJMM.2020.58.3.162

Abstract
A superelastic titanium alloy was subjected to uniaxial tensile deformation at room temperature. The microstructural evolution and deformation mechanisms of the superelastic titanium alloy were investigated by electron backscatter diffraction (EBSD) and X-ray diffraction (XRD). Multiple deformation mechanisms including stress-induced martensitic transformation (SIMT), dislocation slip, {332}<113> and {112}<111> mechanical twinning..... More

                        
169 Influence of Alloy Content on Microstructure and Corrosion Resistance of Zn-based Alloy Coated Steel Product
Zn계 합금도금재의 미세구조 및 내식성에 미치는 합금 조성 변화 영향
Jae-Won Lee, Sung-Jin Kim, Min-Suk Oh
이재원, 김성진, 오민석
Korean J. Met. Mater. 2020;58(3):169-174.   Published online 2020 Mar 5
DOI: https://doi.org/10.3365/KJMM.2020.58.3.169

Abstract
The effects of alloy composition on the coating structure and corrosion resistance of hot-dip Znbased alloy coated steel products were investigated. Zn-based alloy coating layers with different Al and Mg compositions were fabricated using a batch-type galvanizing simulator. Various intermetallic compounds including Zn, Zn/MgZn2 binary eutectic, Zn/Al binary eutectoid and..... More

                           Cited By 1
175 Effect of a Metal Thin Film's Residual Stress and Manufacturing Process on Thin Film Micro-Crack
박막 잔류응력 및 제조공정에 따른 금속박막층 미세크랙 영향
Byung-Kyu Cho, Seung-Chan Hong, Byung-Sam Kim, Jae-Kyung Cheon
조병규, 홍승찬, 김병삼, 천재경
Korean J. Met. Mater. 2020;58(3):175-181.   Published online 2020 Mar 5
DOI: https://doi.org/10.3365/KJMM.2020.58.3.175

Abstract
In recent automobile trends, the functions of opening and closing the vehicle door are accomplished by touch sensor and smart-phone NFC (Near Field Communication) systems. These convenience features are incorporated into the outdoor handle. However, this function can’t be used when chrome plating is applied to this part for design..... More

                        
182 Long-time Oxidation of Ti3(Al,Si)C2 Carbides at 400-800 oC
Junhee Hahn, Sang Whan Park, Dong Bok Lee
Korean J. Met. Mater. 2020;58(3):182-189.   Published online 2020 Mar 5
DOI: https://doi.org/10.3365/KJMM.2020.58.3.182

Abstract
Quarternay carbides of Ti3AlxSi1-xC2 (x=0.3, 0.5, and 0.7) were oxidized at 400, 600, and 800 °C for 0.5-6 months in order to study their long-time oxidation behavior in air. When they were oxidized at 400-600 oC for 0.5-3 months, oxidation proceeded relatively slowly with moderate weight gains. However, further oxidation..... More

                        
190 Electron Irradiation Effects on the Optical and Electrical Properties of ZnO/Ag/SnO2 Thin Films
Yu-Sung Kim, Jin-Young Choi, Yun-je park, Su-Hyeon Choe, Byung-Chul Cha, Young-Min Kong, Daeil Kim
Korean J. Met. Mater. 2020;58(3):190-194.   Published online 2020 Mar 5
DOI: https://doi.org/10.3365/KJMM.2020.58.3.190

Abstract
Transparent conductive ZnO 50 nm/Ag 10 nm/SnO2 50 nm (ZAS) tri-layer films were deposited on glass substrates by magnetron sputtering, and then the surface was subjected to intense electron beam irradiation to investigate the effects of electron irradiation on the structural, optical, and electrical properties of the films. After deposition,..... More

                        
195 The Effect of Post Annealing on Physical Properties of NiTe2 Thin Film Fabricated by Magnetron Sputtering
후열처리 공정이 스퍼터링법으로 제조된 NiTe2 박막의 물리적 성질에 미치는 영향
Ho Jun Park, Jun Ho Lee, Byeong Uk Min, Suk Jun Kim
박호준, 이준호, 민병욱, 김석준
Korean J. Met. Mater. 2020;58(3):195-200.   Published online 2020 Mar 5
DOI: https://doi.org/10.3365/KJMM.2020.58.3.195

Abstract
In this study, the effect of post annealing time on the physical properties of NiTe2 thin films with 2D structure deposited by co-sputtering was investigated. After heat treatment for 10 min, nickel ditelluride thin films with a composition of Ni : Te = 1 : 2 exhibited transmittance of 46%..... More

                           Cited By 1
201 Synthesis of MgF2 Nanoparticles for Improved Anti-Reflective Coating
무반사 코팅을 위한 MgF2 나노입자 합성과 박막 부착력 향상을 위한 연구
Byung-Kwan Song, Jae-Yong Jung, Young-Rae Cho, Jong-Joo Rha, Jeong Wan Kim, Young-Kuk Kim
송병관, 정재용, 조영래, 나종주, 김정완, 김영국
Korean J. Met. Mater. 2020;58(3):201-206.   Published online 2020 Feb 3
DOI: https://doi.org/10.3365/KJMM.2020.58.3.201

Abstract
Anti-reflective (AR) coatings are popular because they offer high durability with effective reflectance and glare reduction, and they can endure both physical and environmental damage. Magnesium fluoride (MgF2) has been used as a nanoparticle coating on AR coating materials by many researchers because they exhibit high transmittance and antireflection characteristics..... More

                        
207 Measurement of Intrinsic Hardness of Deposited Chromium Thin Films by Nanoindentation Method and Influencing Factors
나노인덴테이션 방법으로 크롬 박막의 고유경도를 측정하는 방법과 영향 인자
Young-Joon Kang, Ju-Hwan Baeg, Hyun Park, Young-Rae Cho
강영준, 백주환, 박현, 조영래
Korean J. Met. Mater. 2020;58(3):207-215.   Published online 2020 Mar 5
DOI: https://doi.org/10.3365/KJMM.2020.58.3.207

Abstract
Materials with very small dimensions exhibit different physical and mechanical properties compared to their bulk counterparts. This becomes significantly important for the thin films that are widely used as components in micro-electronics and functional materials. In this study, a chromium (Cr) thin film was deposited on a silicon (Si) wafer..... More

                        
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