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Korean J. Met. Mater.
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Korean Journal of Metals and Materials
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장시간 열간노출에 따른 247LC 초내열합금 보수용접 열영향부의 액화균열민감도 변화
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정혜은, 서성문, 천은준
Korean J. Met. Mater.
2023;61(2):69-75. Published online 2023 Jan 27
DOI:
https://doi.org/10.3365/KJMM.2023.61.2.69
Abstract
In this study, the liquation cracking temperature range (LCTR) of over-aged 247LC superalloy repair welds was quantitatively evaluated using spot-Varestraint testing, especially for application in the repair weld heat-affected zone (HAZ). The metallurgical mechanism of the evaluated liquation cracking susceptibility and variation of the LCTRs of the over-aged 247LC superalloys.....
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Crossref 2
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1.25Cr-0.5Mo과 2.25Cr-1Mo 강의 동적 변형시효 거동에 미치는 합금원소 및 미세조직의 영향
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이요섭, 이호중, 이종현
Korean J. Met. Mater.
2021;59(11):769-780. Published online 2021 Oct 28
DOI:
https://doi.org/10.3365/KJMM.2021.59.11.769
Abstract
The effect of alloying elements and microstructure on the dynamic strain aging (DSA) behavior of 1.25Cr-0.5Mo (P11, ASTM 335Gr.P11) and 2.25Cr-1Mo (P22, ASTM 335Gr.P22) steels was investigated. For both steels, different cooling conditions such as air-cooling (AC) and oil-quenching (OQ) were applied. Tensile tests were conducted in the temperature range.....
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Web of Science 2
Crossref 2
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AISI 4115 강의 진공 침탄 시 아세틸렌 유량에 따른 침탄 거동
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권기훈, 문경일, 이영국, 정민수
Korean J. Met. Mater.
2020;58(9):617-625. Published online 2020 Aug 13
DOI:
https://doi.org/10.3365/KJMM.2020.58.9.617
Abstract
The vacuum carburizing behavior of AISI 4115 steel according to acetylene flow rates (1, 5, 10, 20, 30, 40, and 50 sccm) and temperatures (900, 950, and 1000
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온도 제어형 레이저 열처리에 따른 NiCrBSi 및 CoCrWC 용사 코팅층의 나노구조 형성 거동
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천은준
Korean J. Met. Mater.
2020;58(4):247-256. Published online 2020 Mar 10
DOI:
https://doi.org/10.3365/KJMM.2020.58.4.247
Abstract
.For surface hardening of a continuous casting mold component, a thermal spray coating of NiCrBSi (Metco-16C) and CoCrWC (Stellite-1) was performed followed by laser heat treatment of the coatings. To support selective modification of the thermal spray coating, a metallurgically determined surface temperature was maintained during the laser heat treatment,.....
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Web of Science 4
Crossref 5
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22Cr-9Mo-3Fe-4Nb 니켈기 초내열합금의 저주기 피로에 따른 미세조직변화
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송영석, 석진익, 강정윤
Korean J. Met. Mater.
2017;55(9):609-614. Published online 2017 Aug 30
DOI:
https://doi.org/10.3365/KJMM.2017.55.9.609
Abstract
A new Ni based superalloy with high fatigue resistance and fine grain was considered as a material for high-pressure buckets in fossil fuel power plants. Since such buckets are usually exposed to extreme operating conditions, low cycle fatigue tests were conducted to understand the microstructure evolution of the material during.....
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