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Korean Journal of Metals and Materials
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Ni기 초내열합금 IN738LC의 응고속도와 열처리에 따른 미세조직 및 인장 특성
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김병훈, 공병욱, 주윤곤, 주영규, 홍현욱, 이재현
Korean J. Met. Mater.
2024;62(6):445-454. Published online 2024 May 31
DOI:
https://doi.org/10.3365/KJMM.2024.62.6.445
Abstract
The strength of Ni-base superalloys mainly depends on the γ' precipitates that improve the strength of the materials at high temperatures. The presence of γ' particles within the matrix restricts dislocation movement, and optimized heat treatments can tailor the size, shape, and volume fraction of γ'. In this study the.....
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Fe 함유 Al-10Si-Mg 주조 합금의 미세조직, 인장 및 열전도도 특성에 미치는 과열 처리의 효과
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장진혁, 강태훈, 어광준, 조영희, 이기안
Korean J. Met. Mater.
2024;62(5):402-410. Published online 2024 May 5
DOI:
https://doi.org/10.3365/KJMM.2024.62.5.402
Abstract
In this study, we designed and manufactured a new Fe-bearing Al-10Si-Mg casting alloy (F alloy) and investigated its microstructure, mechanical properties, and thermal conductivity. Two types of Fe-bearing Al-10Si-Mg alloys were used: the Conventional-F alloy, injected at 720 ℃ and cooled by water quenching, and the Superheated-F alloy, heated to.....
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Ni기 초내열 개발 합금(LESS)의 고온 인장특성에 미치는 결정립계 형상의 영향
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신용관, 강병일, 윤정일, 권용남, 김영직
Korean J. Met. Mater.
2022;60(12):940-949. Published online 2022 Nov 25
DOI:
https://doi.org/10.3365/KJMM.2022.60.12.940
Abstract
In order to investigate the mechanical properties of the developed wrought γ'-hardened Ni-based superalloy, LESS alloy (Low Eta Sigma Superalloy), and to understand the deformation behavior, tensile tests were carried out from room temperature to 800oC in comparison with IN 740H alloy. Like other superalloys, the tensile properties of the.....
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Web of Science 5
Crossref 6
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일방향응고한 GTD-111 초내열합금의 황 함량에 따른 미세조직 및 고온 기계적 특성
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강동수, 이형수, 윤대원, 정희원, 유영수, 서성문
Korean J. Met. Mater.
2022;60(10):782-792. Published online 2022 Sep 29
DOI:
https://doi.org/10.3365/KJMM.2022.60.10.782
Abstract
The influence of trace amounts of sulfur (S) on the microstructural evolution, tensile and creep properties in directionally solidified (DS) Ni-based superalloy GTD-111 were systematically investigated. Doping of S in the range of < 1 to 154 ppm resulted in the formation of a Ti
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SC-type carbosulfide phase near the coarse.....
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Web of Science 2
Crossref 3
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Strip Casting 공정으로 제조된 Al 3003 합금의 미세조직, 인장 및 피로 특성에 미치는 후열처리 영향
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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.....
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Web of Science 4
Crossref 4
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단 범위 규칙 반응이 Zr-2.5%Nb 압력관 재료의 시효(aging) 현상에 미치는 영향
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김성수, 김영석, 정종엽
Korean J. Met. Mater.
2018;56(7):479-489. Published online 2018 Jul 5
DOI:
https://doi.org/10.3365/KJMM.2018.56.7.479
Abstract
This study was conducted to investigate the effect of aging treatment from 300 °C to 420 °C on the mechanical properties of the pressure tube material at 310 °C, which is outlet temperature pressure tube in CANDU reactor. The short range ordering (SRO) phenomenon during aging process is confirmed by.....
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Crossref 3
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Powder Injection Molding 공정으로 제조된 17-4PH 강과 Fe-Cr-B 합금 복합 소재의 미세조직 및 기계적 특성
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주연아, 김영균, 윤태식, 이기안
Korean J. Met. Mater.
2018;56(5):342-349. Published online 2018 May 8
DOI:
https://doi.org/10.3365/KJMM.2018.56.5.342
Abstract
This study investigated the microstructure and mechanical properties of 17-4PH precipitation hardened martensite stainless steel and Fe-Cr-B based alloy mixed material manufactured using powder injection molding. 17-4PH stainless steel powder was mixed with 5 wt%, 10 wt% and 20 wt% Fe-Cr-B based alloy (M alloy) powder to manufacture three different.....
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Crossref 5
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