کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7972294 | 1514618 | 2018 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Heterogeneous nano/ultrafine-grained medium Mn austenitic stainless steel with high strength and ductility
ترجمه فارسی عنوان
فولاد ضد زنگ آستنیتی نانومواد / نازک نانو ذرات نیتروژن با قدرت و انعطاف پذیری بالا
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کلمات کلیدی
فولاد ضد زنگ آستنیتی، نانو / نانو / ناهمواری ناهمگن، مکانیزم تغییر شکل استحکام، شکل پذیری،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
چکیده انگلیسی
The objective of the present study is to obtain austenitic stainless steel with super-high yield strength and good ductility through a heterogeneous nano/ultrafine-grained design, fabricated by the reverse transformation of strain-induced martensite and the recrystallization of deformed austenite using two cold-rolling and annealing processes. The second cold-rolling and annealing process was performed on a bimodal microstructure obtained by the first cold-rolling and annealing process on the original microstructure. The bimodal microstructure consists of nanometer grains and a certain quantity of micrometer grains distributed in the lamella. The results of this study demonstrate that after the second process, both the coarse-grain and fine-grain areas of the bimodal microstructure formed their own finer bimodal microstructure and the lamella of the grain distribution became narrower. The yield strength (1221â¯MPa) and tensile strength (1376â¯MPa) of the heterogeneous nano/ultrafine-grained steel were greatly improved in the situation where the total elongation still remained at the high level of 45.3%. The fine-grained strengthening, back-stress strengthening, twinning induced plasticity (TWIP) effect and transformation induced plasticity (TRIP) effect were produced by the heterogeneous nano/ultrafine-grained microstructure during tensile possess synthetically contributed to the high strength and ductility.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 725, 16 May 2018, Pages 187-195
Journal: Materials Science and Engineering: A - Volume 725, 16 May 2018, Pages 187-195
نویسندگان
Gang Niu, Huibin Wu, Da Zhang, Na Gong, Di Tang,