کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1581476 | 1514861 | 2008 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High-temperature tensile behavior and microstructural evolution of cold-rolled Al-6Mg-0.4Sc-0.13Zr alloy
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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 high-temperature tensile properties and microstructural evolution of Al-6Mg-0.4Sc-0.13Zr alloy prepared by conventional cold rolling at various temperatures were studied. At 573Â K, the Al3(ScxZr1âx) particles stabilized the extremely fine subgrains (SG) and submicrograins (SMG). These SG and SMG boundaries acted as effective dislocation sinks, turning into true high-angled boundaries susceptible to consequent sliding. Therefore, the alloy achieved an acceptable ductility with 300% elongation. At 623-723Â K, because geometrical sliding was not feasible with rugged grain boundaries and dislocation movement was strongly hindered by the Al3(ScxZr1âx) particles, the alloy exhibited poor ductility. At 773 and 803Â K, the Al3(ScxZr1âx) particles began to act as grain stabilizers, and retained fine-grain structure at these high temperatures. As a result, a maximum elongation of 1100% was achieved after deformation at 803Â K with a strain rate of 5Â ÃÂ 10â3Â sâ1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 497, Issues 1â2, 15 December 2008, Pages 10-17
Journal: Materials Science and Engineering: A - Volume 497, Issues 1â2, 15 December 2008, Pages 10-17
نویسندگان
Yi-Yun Li, Wen-Hsiung Wang, Yung-Fu Hsu, Shan Trong,