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Korean J. Met. Mater.
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Er 합금 원소 첨가를 통한 인장 물성과 절삭성이 우수한 Ti 합금 개발
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최이슬, 오정목, 박찬희, 이욱진, 박용호, 원종우
Korean J. Met. Mater.
2024;62(3):171-179. Published online 2024 Mar 5
DOI:
https://doi.org/10.3365/KJMM.2024.62.3.171
Abstract
This study demonstrates that the addition of the rare earth element Erbium (Er) significantly enhances the machinability and tensile properties of titanium (Ti). Pure Ti alloys and Er-added Ti alloys with 0.5-1.1 wt.% Er content were prepared, and their microstructure, machinability, and tensile properties were compared. Two different types of.....
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Korean J. Met. Mater.
2023;61(11):815-823. Published online 2023 Oct 29
DOI:
https://doi.org/10.3365/KJMM.2023.61.11.815
Abstract
The microstructure, tensile and fatigue properties of a martensitic stainless steel (MSS) plate with a thickness of 0.152 mm are investigated in this study. The microstructural properties were initially studied using electron backscatter diffraction microscopy. High dislocation densities were observed in the microstructure, along with the rolling texture revealed by.....
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Cu 및 Zr 첨가 A356 합금의 열처리 조건에 따른 상 변화와 기계적 특성 분석
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송태웅, 구자욱, 전승병, 정창열
Korean J. Met. Mater.
2023;61(5):311-323. Published online 2023 Apr 20
DOI:
https://doi.org/10.3365/KJMM.2023.61.5.311
Abstract
Cast A356(Al-Si-Mg) alloys are widely used in automotive and general applications because of their mechanical properties and castability. Al-Si-Mg-(Cu) alloys typically lose their strength above 170 o C due to coarsening of precipitates, which limits their application to components. To maintain their strength at elevated temperature, Al-Si-Mg-(Cu) alloys are modified.....
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Web of Science 1
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분말 합금법으로 제조된 Ni-Cr-Al 초합금 다공체의 인장 특성에 미치는 변형률 속도 및 하중 방향 효과
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김규식, 배정석, 오재성, 이기안
Korean J. Met. Mater.
2020;58(6):375-382. Published online 2020 May 20
DOI:
https://doi.org/10.3365/KJMM.2020.58.6.375
Abstract
The powder-alloyed metallic sheet foam manufacturing process has the advantage of being able to control pore shape, size, and distribution more easily and homogeneously than conventional foam manufacturing processes. The effects of strain rate and tensile direction on the mechanical properties of Ni-Cr-Al superalloy foam fabricated by powder alloying method.....
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Web of Science 1
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9Cr-1Mo-V-Nb 용착금속에서 생성된 탄화물이 고온 인장강도에 미치는 영향
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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
Abstract
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 M
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. Nitrogen was reduced from 0.04 to.....
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피로손상된 제진합금의 인장성질에 미치는 피로응력 크기의 영향
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이명수, 김권후, 강창룡
Korean J. Met. Mater.
2019;57(2):71-76. Published online 2019 Jan 8
DOI:
https://doi.org/10.3365/KJMM.2019.57.2.71
Abstract
This study was carried out to investigate the effect of fatigue stress magnitude on the tensile properties of the damaged Fe – 22Mn – 12Cr – 3Ni – 2Si – 4Co damping alloy under various fatigue stress magnitudes. α´ and ε-martensite were formed by fatigue stress in the Fe –.....
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Metal Injection Molding 공정으로 제조된 W-7Ni-3Fe 텅스텐 중합금의 미세조직 및 기계적 특성에 미치는 열처리의 영향
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윤성준, 주연아, 윤태식, 이기안
Korean J. Met. Mater.
2018;56(10):727-733. Published online 2018 Oct 5
DOI:
https://doi.org/10.3365/KJMM.2018.56.10.727
Abstract
This study investigated the microstructure and room temperature mechanical properties of W-7Ni-3Fe (wt%) tungsten heavy alloy (as-fabricated) which was manufactured by metal injection molding (MIM). To identify the effect of heat treatment on the W-7Ni-3Fe alloy, its properties were compared after heattreatment (1,100 oC for 1 hour) in vacuum atmosphere......
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Crossref 1
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AZ80과 TAZ711 마그네슘 압출재의 상온 및 고온 인장 특성과 고주기 피로 특성
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이상원, 김상훈, 박성혁
Korean J. Met. Mater.
2018;56(10):699-707. Published online 2018 Oct 5
DOI:
https://doi.org/10.3365/KJMM.2018.56.10.699
Abstract
The microstructure, tensile properties at room and elevated temperatures, and high-cycle fatigue behavior of an extruded Mg-7Sn-1Al-1Zn (TAZ711) alloy were investigated in comparison with those of an Mg-8Al-0.5Zn (AZ80) alloy extruded under the same conditions. The extruded AZ80 alloy exhibited a fully recrystallized structure, whereas the extruded TAZ711 alloy had.....
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Crossref 3
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과공석 강선에서 공정조건이 인장파단 거동에 미치는 영향
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안강석, 박정훈, 남원종
Korean J. Met. Mater.
2018;56(3):187-196. Published online 2018 Mar 6
DOI:
https://doi.org/10.3365/KJMM.2018.56.3.187
Abstract
This study investigated the effects of manufacturing conditions, such as patenting temperature and drawing strains, on the tensile fracture behaviors, especially on reduction of area (RA), of hyper-eutectoid steel wire. Steel wires with the chemical compositions of Fe-0.92C-1.3Si-0.6Mn-0.3Cr (wt%), were austenitized at 900 °C for 3 min and isothermally transformed.....
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Al 첨가가 Mg-7Sn-1Zn 합금 압출재의 미세조직과 인장 및 굽힘 특성에 미치는 영향
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김상훈, 이종언, 김예진, 최재옥, 이정훈, 박성혁
Korean J. Met. Mater.
2018;56(1):40-48. Published online 2018 Jan 1
DOI:
https://doi.org/10.3365/KJMM.2018.56.1.40
Abstract
The effect of Al addition on the microstructure and mechanical properties of extruded Mg-Sn based alloy is investigated by adding 1 wt% Al to the Mg-7Sn-1Zn alloy and indirectly extruding the billets with and without the Al addition. The Al addition promotes dynamic recrystallization (DRX) behaviour during hot extrusion, which.....
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Crossref 7
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초음파 용탕 처리 및 냉각속도가 Al-18Si-4Cu-3Ni 피스톤용 합금의 미세조직과 고온인장특성에 미치는 영향
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윤재희, 조영희, 정재길, 이정무, 박익민
Korean J. Met. Mater.
2017;55(6):396-404. Published online 2017 Jun 1
DOI:
https://doi.org/10.3365/KJMM.2017.55.6.396
Abstract
The influence of ultrasonic melt treatment (UST) combined with a change in cooling rates on the microstructure and elevated temperature mechanical properties of a hypereutectic Al-18Si-4Cu-3Ni piston alloy was investigated. Microstructural observation confirmed that UST effectively refined the sizes of primary Si and intermetallic compounds (e.g. ε-Al
3
Ni) while promoting their.....
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Crossref 2
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고망간 경량철강 냉연판재의 미세조직, 인장특성 및 파괴거동에 미치는 어닐링 온도의 영향
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이재현, 박성준, 문준오, 강전연, 박준영, 이태호, 조경목
Korean J. Met. Mater.
2017;55(5):363-371. Published online 2017 May 9
DOI:
https://doi.org/10.3365/KJMM.2017.55.5.363
Abstract
The effects of the annealing temperature on the microstructure and tensile properties of cold-rolled light-weight steels are investigated using two Fe-30Mn-xAl-0.9C alloys that contain different Al content. The initial alloy microstructure is composed of a single austenite or a mixture of austenite and ferrite depending on the nominal aluminum content....
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Crossref 7
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