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Microstructure evolution and mechanical properties in 1Cr low alloy steel with different heat treatments

TitleMicrostructure evolution and mechanical properties in 1Cr low alloy steel with different heat treatments
Publication TypeJournal Article
Year of Publication2017
AuthorsLiu, M, Zhang, ZX, Wang, SQ, Cao, GH, Russell, AM, Liu, YH, Dong, XM, Zhang, CX, Zhang, ZH
JournalMaterials Science and Engineering a-Structural Materials Properties Microstructure and Processing
Volume705
Pagination291-299
Date Published09
Type of ArticleArticle
ISBN Number0921-5093
Accession NumberWOS:000413135700037
Keywords&, 300m steel, chemical-composition, cr, electron microscopy (TEM), energy, ferritic steels, martensite, Materials Science, Mechanical property, Metallurgical Engineering, Microstructure, partitioning-tempering process, power-plant steel, Precipitate, precipitation behavior, stacking-fault, steel, Technology - Other Topics, transmission, ultrahigh strength steel
Abstract

cipitates obtained from the quenched sample were identified as Nb-rich MC carbides. Energy dispersive X-ray spectroscopy (EDXS) semi-quantitatively analyzed the ratios of Fe atoms to Cr atoms in relevant phases, revealing that redistribution of Cr occurred in the tempering process but not in the normalizing or quenching processes. The tempered sample contained M3C carbide with a {022} twin plane and a hexagonal M7C3-type phase. Strength and elongation in the quenched sample were larger than these in normalized sample, but a significant reduction in strength and a dramatic increase in elongation occurred when the as-quenched sample was tempered.

DOI10.1016/j.msea.2017.08.088
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