کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1585295 1514913 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study of the S phase formed on plasma-nitrided AISI 316L stainless steel
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Study of the S phase formed on plasma-nitrided AISI 316L stainless steel
چکیده انگلیسی

Some tribological and corrosion resistance properties of austenitic stainless steels are enhanced by the formation of the S phase, also called expanded austenite. This phase is formed on the surfaces of austenitic stainless steels nitrided under certain conditions. In this work, AISI 316L steel was plasma-nitrided at 350, 400, 450, and 500 °C, and the samples were characterized by X-ray diffraction (XRD), conversion electron Mössbauer spectroscopy (CEMS), and wavelength dispersive spectroscopy (WDS) in order to investigate the S phase. XRD analysis identified the presence of a distorted cubic structure phase. The modified layer consists of an austenitic phase with different content of nitrogen, ranging from approximately 10 to 40 at%, and also γ′-Fe4N and ɛ-Fe2–3N phases. A diminution in the S phase occurs with the increase in nitriding temperature, and this decrease is related to the transformation of the S phase to the γ′-Fe4N phase.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 431, Issues 1–2, 15 September 2006, Pages 315–321
نویسندگان
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