کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1575321 1514740 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Activation energy for serrated flow in type 316L(N) austenitic stainless steel
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Activation energy for serrated flow in type 316L(N) austenitic stainless steel
چکیده انگلیسی
Tensile tests were performed at a wide range of strain rates (3.16×10−5−3.16×10−3 s−1) and temperatures (300-1123 K) to examine serrated flow behaviour, an important manifestation of dynamic strain ageing (DSA), in type 316L(N) austenitic stainless steel. The steel exhibited distinct low and high temperature serrated flow regimes separated by a retardation bay. Based on the activation energy value of 115 kJ mol−1, diffusion of interstitial carbon has been suggested to be responsible for serrated flow in the low temperature regime. In the high temperature regime, an average activation energy value of 206 kJ mol−1 obtained using different methods indicated that diffusion of substitutional chromium atom is responsible for DSA. Disappearance of serrations at high temperatures has been ascribed to the effects associated with precipitation reaction between chromium and carbon atoms. The influence of nitrogen retarding DSA in type 316L(N) stainless steel has been discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 603, 6 May 2014, Pages 160-168
نویسندگان
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