کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1653873 | 1007675 | 2006 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Serrated flow and abnormal strain rate sensitivity of a magnesium–lithium alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Tensile experiment of LA41 magnesium alloy was carried out and serrated flow was apparent throughout the deformation history. This alloy exhibited abnormal strain rate sensitivity (SRS); that is, SRS was positive in the strain rate range from 1.33 × 10− 4 s− 1 to 6.66 × 10− 4 s− 1, and became negative in another range from 6.66 × 10− 4 s− 1 to 1.33 × 10− 2 s− 1. The critical strain was observed to increase with increasing strain but decrease with increasing temperature. In addition, activation energy for serrated flow was calculated and variations of SRS were explained through the competition between dynamic strain aging (DSA) of solute atoms and shearing of precipitates by dislocations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 60, Issue 24, October 2006, Pages 2941–2944
Journal: Materials Letters - Volume 60, Issue 24, October 2006, Pages 2941–2944
نویسندگان
Cong Wang, Yongbo Xu, Enhou Han,