کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1574971 | 1514736 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hot workability analysis of AZ61 Mg alloys with processing maps
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The hot working behaviors of as-cast and homogenized AZ61 magnesium alloys were investigated using processing maps in this study. Compression tests were conducted in the temperature range of 250-450 °C and in the strain rate range of 1Ã10â3-1 sâ1 to establish the processing maps. The effect of homogenization heat treatment on hot workability was analyzed. The map for as-cast material exhibited a single domain of dynamic recrystallization that occurs in the temperature range of 300-450 °C and in the strain rate range of 1Ã10â3-1Ã10â2 sâ1. Homogenization heat treatment improved hot workability by expanding the workability domain and by significantly reducing the flow instability regime. Variations in power dissipation efficiency were related to the degree of dynamic recrystallization and the grain size in the workability domains for both as-cast and homogenized materials. The efficiency values generated by as-cast AZ61 were higher overall compared with those produced by homogenized AZ61 in the workability domains. The rate-controlling mechanism was dependent on the strain due to microstructural evolution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 607, 23 June 2014, Pages 261-268
Journal: Materials Science and Engineering: A - Volume 607, 23 June 2014, Pages 261-268
نویسندگان
Horng-yu Wu, Cheng-tao Wu, Jie-chen Yang, Ming-jie Lin,