کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11007016 | 1514608 | 2018 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of grain size on stretch-flangeability of twinning-induced plasticity steels
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of grain size on stretch-flangeability of twinning-induced plasticity steels Effect of grain size on stretch-flangeability of twinning-induced plasticity steels](/preview/png/11007016.png)
چکیده انگلیسی
The effect of grain size on stretch-flangeability was investigated to determine its influence on stretch-flangeability of high strength steels. To avoid other effects of microstructure, single-phase twinning-induced plasticity (TWIP) steels were selected for the investigation. To control the grain size of two types of TWIP steels, 1) the initial specimen was annealed at 1100â¯â to increase its grain size, or 2) subjected to high-pressure torsion then annealed at 650â¯â to reduce the grain size. The microstructural features were analyzed using the electron backscatter diffraction. The stretch-flangeability of TWIP steels with various grain sizes was evaluated using a hole-expansion test. It was found that the hole-expansion ratio follows the Hall-Petch correlation as does fracture toughness. To improve the stretch-flangeability of high strength steels, microstructural features should be designed to increase their fracture toughness.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 735, 26 September 2018, Pages 295-301
Journal: Materials Science and Engineering: A - Volume 735, 26 September 2018, Pages 295-301
نویسندگان
Jae Ik Yoon, Hak Hyeon Lee, Jaimyun Jung, Hyoung Seop Kim,