کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1572780 1000701 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructure analysis of 304L austenitic stainless steel by QPQ complex salt bath treatment
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Microstructure analysis of 304L austenitic stainless steel by QPQ complex salt bath treatment
چکیده انگلیسی
The microstructure of nitro-carburized and post-oxidized 304L austenitic stainless steel (SS) produced by a Quench-Polish-Quench complex salt bath process (QPQ) was investigated. The nitro-carburized coating as a whole consists of CrN, γ′-Fe4N and expanded austenite S(γN). On the post-oxidized surfaces, XRD analyses revealed the existence of a superficial compound ξ-Fe2(N,C) sub-layer, the presence of magnetite (Fe3O4) and a small amount of FeO. At greater depth from the surface of the post-oxidized surface, S(γN) is formed and subsequently transforms partially into CrN and ferrite/martensite (αN). A modestly higher sub-surface hardness and a superior hardness profile were obtained by post-oxidizing, although its surface hardness was lower than that produced by nitro-carburizing alone.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 59, Issue 9, September 2008, Pages 1359-1363
نویسندگان
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