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Korean J. Met. Mater.
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Korean Journal of Metals and Materials
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Ti-Ni-Fe 합금의 R상 변태온도에 미치는 Fe 조성과 열처리 온도의 영향
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김원석, 금나영, 김진용, 김재일
Korean J. Met. Mater.
2024;62(4):251-256. Published online 2024 Mar 29
DOI:
https://doi.org/10.3365/KJMM.2024.62.4.251
Abstract
R-phase transformations in TiNi shape memory alloys (Nitinol) have various applications because of their small thermal hysteresis and low fatigue resistance. Adding a third element such as Fe or Al is one of the useful ways to induce R-phase transformation. Controlling the R-phase transformation temperature is crucial for industrial and...
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IN 625 초내열합금의 응고거동 및 상변태 온도 분석
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함성효, 박준호, 조창용, 양승철, 주윤곤, 구지호, 이재현
Korean J. Met. Mater.
2023;61(4):261-268. Published online 2023 Mar 22
DOI:
https://doi.org/10.3365/KJMM.2023.61.4.261
Abstract
The solidification and phase transformation behaviors of IN625 with low C and Fe were investigated through directional solidification and quenching experiments. The primary and secondary dendrite arm spacing decreased exponentially as the solidification rate increased, demonstrating good agreement with theoretical equations. The MC carbide formed at a constant temperature gradient.....
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Web of Science 3
Crossref 4
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수소가압 및 응력부식 분위기에서 스테인레스강 SS304의 수소취성균열
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최병학, 이상우, 안종기, 이진희, 임태운
Korean J. Met. Mater.
2020;58(10):653-659. Published online 2020 Oct 5
DOI:
https://doi.org/10.3365/KJMM.2020.58.10.653
Abstract
The phenomena of hydrogen induced cracking (HIC) in 304 stainless steels was considered in a hydrogen pressure and stress corrosive atmosphere. Microstructures with chloride pits and stress corrosion cracks around the HIC were analyzed by SEM/EDS. Abnormal phase transformations induced by the hydrogen were analyzed using TEM and diffraction. In.....
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Web of Science 5
Crossref 5
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냉간압연 된 304 오스테나이트 스테인리스강의 열처리에 의한 기계적 특성 평가
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박민하, 김광윤, 장재호, 김형찬, 문형석, 전종배, 남대근, 손근용, 김병준
Korean J. Met. Mater.
2018;56(7):490-498. Published online 2018 Jul 5
DOI:
https://doi.org/10.3365/KJMM.2018.56.7.490
Abstract
Austenitic stainless steels are widely used in a variety of industries, such as power plants, aerospace, automotive, construction and electronics, due to their excellent mechanical properties including ductility, toughness and corrosion resistance. For application in various industries, many parts and products require plastic processes such as cold rolling, cold forging.....
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Crossref 5
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연속냉각 중 산소함량이 Ti-5Al-2.5Fe 합금의 상변태 거동에 미치는 영향
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김도헌, 원종우, 정대원, 이학성, 윤석영, 현용택
Korean J. Met. Mater.
2017;55(9):600-608. Published online 2017 Aug 30
DOI:
https://doi.org/10.3365/KJMM.2017.55.9.600
Abstract
The effects of oxygen content on the
β
to
α
phase transformation of the Ti-5Al-2.5Fe alloy during continuous cooling were investigated by varying the oxygen content between 0.08 – 0.41 wt%. Dilatometer tests were performed at cooling rates of 0.05 – 100 ℃/s combined with microstructure observation to examine phase.....
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조성의 기계적 합금화 분말에 형성된 산화물의 상변태 거동
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김가언, 최정선, 노상훈, 강석훈, 최병권, 김영도, 김태규
Korean J. Met. Mater.
2017;55(5):357-362. Published online 2017 May 9
DOI:
https://doi.org/10.3365/KJMM.2017.55.5.357
Abstract
The phase transformation behavior of the oxides formed in mechanically alloyed Fe-5Y
2
O
3
powder is investigated. Non-stoichiometric Y-rich and Fe-rich oxides with sizes of less than 300 nm are observed in the mechanically alloyed powder. The diffusion and redistribution reactions of the elements in these oxides during heating of the powder.....
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Optical Devices & Energy Materials
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코발트실리사이드 상대전극을 채용한 염료감응형 태양전지의 물성 연구
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노윤영, 김광배, 송오성
Korean J. Met. Mater.
2017;55(1):39-45. Published online 2017 Jan 5
DOI:
https://doi.org/10.3365/KJMM.2017.55.1.39
Abstract
Cobalt silicide was used as a counter electrode to replace the Pt catalytic layer of a dye-sensitized solar cell (DSSC) device. 100 nm Si/ 100 nm Co on quartz was formed by sputtering and cobalt-silicides were formed by vacuum heat treatment at 500 ℃ and 700 ℃ for 30 min,.....
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WC/Co 초경 스크랩 산화물의 환원/침탄 반응
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권철민, 이길근, 하국현
Korean J. Met. Mater.
2016;54(10):743-751. Published online 2016 Oct 5
DOI:
https://doi.org/10.3365/KJMM.2016.54.10.743
Abstract
This study conducted an analysis of the carbothermal reduction of oxidized WC/Co hardmetal scrap with solid carbon under an argon and hydrogen gas atmosphere. The WC/Co hardmetal scrap oxide consisted of WO
3
and CoWO
4
. WO
3
was reduced before CoWO
4
by the solid carbon regardless of gas atmosphere. The simple oxide.....
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Crossref 3
Optical Devices & Energy Materials
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니켈실리사이드 상대전극을 이용한 염료감응형 태양전지의 물성 연구
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김광배, 노윤영, 최민경, 송오성
Korean J. Met. Mater.
2016;54(8):615-620. Published online 2016 Aug 5
DOI:
https://doi.org/10.3365/KJMM.2016.54.8.615
Abstract
Nickel silicide was used as a counter electrode to replace the Pt catalytic layer of a dye-sensitized solar cell (DSSC) device. 50 nm Si/ 50 nm Ni was formed on glass or quartz by sputtering, and nickel silicides were formed by vacuum heat treatments at 450 and 800 ℃ for.....
More
Crossref 2
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