کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7979186 | 1514719 | 2015 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Deformation twinning and martensitic transformation and dynamic mechanical properties in Fe-0.07C-23Mn-3.1Si-2.8Al TRIP/TWIP steel
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In the study described here, we have explored the evolution of microstructure and mechanical properties in Fe-0.07C-23Mn-3.1Si-2.8Al steel with a stacking fault energy (SFE) in the intermediate range of 15-20 mJ mâ2 during dynamic deformation and in the strain rate range of 101-103 sâ1. The results showed that the transformation induced plasticity (TRIP) effect and twinning induced plasticity (TWIP) effect coexist during dynamic deformation. The mode of austenite-to-martensite transformation is γâε, εâαâ². With increase in the strain rate, the volume fraction intermediate ε-martensite was increased and αâ²-martensite remained nearly constant, and the frequency of the intersecting deformation twins was also increased. This behavior of steel was responsible for a good combination of ultimate tensile strength of 913 MPa and total elongation of 75.4% at a strain rate of 103 sâ1. The strength and elongation increased significantly with an increase in strain rate in the range of 101-103 sâ1. The dominant plasticity enhancing mechanisms with increase in strain rate were strain-induced intermediate ε-martensite and intersecting deformation twins.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 624, 29 January 2015, Pages 186-192
Journal: Materials Science and Engineering: A - Volume 624, 29 January 2015, Pages 186-192
نویسندگان
Z.Y. Tang, R.D.K. Misra, M. Ma, N. Zan, Z.Q. Wu, H. Ding,