کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7980913 | 1514731 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effects of detwinning on the mechanical properties of AZ31B magnesium alloy with different strain rates at 423Â K
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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 order to investigate the effects of detwinning on the mechanical property of AZ31 extruded magnesium alloy at different strain rates, tensile tests were conducted on samples which had been subjected to pre-compression to 3% along the extrusion direction, with strain rates ranging from 10â1Â sâ1 to 10â4Â sâ1 at 423Â K. The results show that the strength decreases by decreasing the strain rate both on the as-received and on the pre-compressed specimens. Yield strength of pre-compressed alloy decreased comparing with as-received specimens in the whole strain rate range. Fracture elongation of undeformed specimens increased as the strain rate decreased. However, in pre-compressed materials it decreased when the strain rate ranged from 10â2Â sâ1 to 10â4Â sâ1. Changes in mechanical properties were mainly related to the softening orientation induced by the twins. Detwinning occurred during the inverse tensile deformation in the pre-compressed AZ31 alloy. Due to detwinning, DXR was delayed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 612, 26 August 2014, Pages 423-430
Journal: Materials Science and Engineering: A - Volume 612, 26 August 2014, Pages 423-430
نویسندگان
Lifei Wang, Guangsheng Huang, Zhaoyang Shi, Hua Zhang, Paola Bassani, Maurizio Vedani, Fusheng Pan,