<P>The effects of aging at 700 degrees C on the microstructure and tensile properties of an alumina-forming austenitic (AFA) stainless steel were investigated. With increasing aging time, B2-NiAl and Laves phase precipitated first on grain bound...
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https://www.riss.kr/link?id=A107643172
2016
-
SCOPUS,SCIE
학술저널
23-31(9쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P>The effects of aging at 700 degrees C on the microstructure and tensile properties of an alumina-forming austenitic (AFA) stainless steel were investigated. With increasing aging time, B2-NiAl and Laves phase precipitated first on grain bound...
<P>The effects of aging at 700 degrees C on the microstructure and tensile properties of an alumina-forming austenitic (AFA) stainless steel were investigated. With increasing aging time, B2-NiAl and Laves phase precipitated first on grain boundaries (GB) and then in the grain interior. The GB precipitate coverage reached 74% after aging for 1000 h. The GB precipitates not only suppressed grain coarsening during aging, but also influenced the tensile fracture mode at 700 degrees C by partitioning stress concentration on triple junctions. Moreover plate-like and spherical NbC particles precipitated during aging. Spherical NbC with size of around 5 nm were stable, while plate-like NbC grew to 89 nm after aging for 1000 h. These precipitates played an important role on the tensile strength. Age hardening contributed to the increasing tensile strength at RT with aging time, while the softening mechanism of dynamic recovery dominated the tensile tests at 700 degrees C. (C) 2016 Elsevier B.V. All rights reserved.</P>
Evolutionary anisotropy and flow stress in advanced high strength steels under loading path changes