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Korean J. Met. Mater.
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Korean Journal of Metals and Materials
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니켈기 Inconel 740H 초내열합금과 고Cr계 Gr.92 내열강의 이종금속 용접부의 미세조직 및 크리프 파단 특성
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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
Abstract
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
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전자기주조법으로 제조된 Al-12Si계 합금의 미세조직 및 고온 소성변형 거동
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전경수, 노흥렬, 김목순, 김종호, 박준표
Korean J. Met. Mater.
2017;55(6):386-395. Published online 2017 Jun 1
DOI:
https://doi.org/10.3365/KJMM.2017.55.6.386
Abstract
An as-received EMC/S (electromagnetic casting and stirring)-processed Al-12Si based alloy billet was homogenized to examine its microstructure and high temperature plastic deformation behavior, using compressive tests over the temperature range from 623 to 743 K and a strain rate range from 1.0×10
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Korean J. Met. Mater.
2017;55(4):222-226. Published online 2017 Apr 6
DOI:
https://doi.org/10.3365/KJMM.2017.55.4.222
Abstract
An AlCrTiSiN film composed of 31Al-15Cr-1.7Ti-0.5Si-51.8N (at%) was deposited on a steel substrate by arc ion plating to a thickness of 1 μm. It consisted of nano crystalline hcp-AlN and fcc-CrN. Its corrosion behavior in Ar-1%SO
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gas at 800 ℃ for 5-50 h was studied. The resulting scales consisted primarily.....
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TiC-SKD11 함침 복합재의 온도에 따른 인장 특성과 파괴거동 변화
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오누리, 이상관, 조승찬, 조일국, 황금철, 김대하, 조영태, 서동우, 홍현욱
Korean J. Met. Mater.
2017;55(3):156-164. Published online 2017 Mar 3
DOI:
https://doi.org/10.3365/KJMM.2017.55.3.156
Abstract
A composite having 60 vol% of TiC particles was successfully fabricated by the infiltration of molten SKD11 tool steel into a TiC preform. The density of this composite was achieved to be 25% lighter than conventional steels. The penetration of the liquid metal reached geometrically complex regions without any interfacial.....
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