کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7981434 | 1514746 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Deformation mechanisms induced under high cycle fatigue tests in a metastable austenitic stainless steel
ترجمه فارسی عنوان
مکانیزمهای تغییر شکل ایجاد شده در آزمایشات خستگی چرخه با استفاده از فولاد ضد زنگ آستنیتی متاستاز
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کلمات کلیدی
خستگی، آستنیت متاستاز مکانیزم تغییر شکل تبدیل فاز،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
چکیده انگلیسی
Advanced techniques were used to study the deformation mechanisms induced by fatigue tests in a metastable austenitic stainless steel AISI 301LN. Observations by Atomic Force Microscopy were carried out to study the evolution of a pre-existing martensite platelet at increasing number of cycles. The sub-superficial deformation mechanisms of the austenitic grains were studied considering the cross-section microstructure obtained by Focused Ion Beam and analysed by Scanning Electron Microscopy and Transmission Electron Microscopy. The results revealed no deformation surrounding the pre-existing martensitic platelet during fatigue tests, only the growth on height was observed. Martensite formation was associated with shear bands on austenite, mainly in the {111} plane, and with the activation of the other intersecting austenite {111}ã110ã slip system. Furthermore, transmission electron microscopy results showed that the nucleation of ε-martensite follows a two stages phase transformation (γfccâεhcpâα'bcc).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 597, 12 March 2014, Pages 232-236
Journal: Materials Science and Engineering: A - Volume 597, 12 March 2014, Pages 232-236
نویسندگان
J.J. Roa, G. Fargas, E. Jiménez-Piqué, A. Mateo,