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Korean J. Met. Mater.
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Korean Journal of Metals and Materials
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Alloy 282 초내열합금 모재 및 용접부의 기계적 특성과 미세조직에 미치는 시효열처리 조건의 영향
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방진혁, 강용준, 김남규, 서성문, 이상훈, 송상우, 강남현
Korean J. Met. Mater.
2020;58(8):540-549. Published online 2020 Jul 27
DOI:
https://doi.org/10.3365/KJMM.2020.58.8.540
Abstract
The effect of aging heat treatment conditions on the mechanical properties and microstructure of the base and weld metal of Alloy 282 superalloy was investigated. The aging heat treatment conditions employed in this study were as follows: two-steps (1010 °C for 2 hours plus 788 °C for 8 hours) and.....
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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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C for 4 hours.....
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Cited By 5
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Fe-14Cr계 페라이틱 산화물 분산 강화강의 고온 압축 및 크리프 특성에 미치는 열처리의 영향
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김영균, 주연아, 박종관, 김휘준, 공만식, 이기안
Korean J. Met. Mater.
2017;55(12):862-869. Published online 2017 Dec 4
DOI:
https://doi.org/10.3365/KJMM.2017.55.12.862
Abstract
This study investigated the microstructure and the ambient-elevated temperature compression and elevated temperature creep properties of Fe-14Cr ferritic ODS steel manufactured by mechanical alloying (high energy ball milling) and hot extrusion processes. Initial microstructural observation of the as-extruded material identified elongated grains in the direction of extrusion; however, some recrystallization.....
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Korean J. Met. Mater.
2017;55(7):486-491. Published online 2017 Jul 4
DOI:
https://doi.org/10.3365/KJMM.2017.55.7.486
Abstract
A new Ni based superalloy is considered as bucket material because of high fatigue resistance with fine grain. However a bucket is usually exposed to high temperature for a long time, so creep rupture tests were conducted to understand the microstructure evolution during creep deformation under various stresses at temperatures.....
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Alumina-Forming 오스테나이트계 스테인리스강의 냉간가공을 통한 미세 NbC 석출 촉진과 크리프 특성 향상
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박현화, 강전연, 하헌영, 이태호, 홍현욱
Korean J. Met. Mater.
2017;55(7):470-476. Published online 2017 Jul 4
DOI:
https://doi.org/10.3365/KJMM.2017.55.7.470
Abstract
A feasibility study on microstructure design has been carried out to improve creep rupture life in alumina-forming austenitic (AFA) Fe-14Cr-20Ni-2.3Al stainless steel with and without 2 wt% W addition. After creep tests under 780 °C/80 MPa conditions, it was observed that internal cracks initiated primarily from grain boundaries in the.....
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Cited By 3
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