کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10635425 | 993522 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Superplasticity and texture of SiC whiskers in a magnesium-based composite
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Superplasticity and texture of SiC whiskers in a magnesium-based composite Superplasticity and texture of SiC whiskers in a magnesium-based composite](/preview/png/10635425.png)
چکیده انگلیسی
Superplastic deformation behaviors in a β-SiCw/ZK60 composite were investigated. The samples were tested at temperatures ranging from 613 to 723 K and at initial strain rates ranging from 8.3 Ã 10â4 to 8.3 Ã 10â2 sâ1. A maximum elongation of 200% was obtained at 613 K and at 1.67 Ã 10â2 sâ1 with a m-value of 0.35. The activation energy (98 kJ/mol) approximates to that for grain boundary diffusion (92 KJ/mol) in magnesium. A strong ã 1 1 1 ã fiber texture was formed in SiC whiskers during superplastic deformation, resulting from the matrix flow and interface sliding. The alignment of SiC whiskers restrains the grain boundary sliding of matrix alloy, and thus facilitates the growth and linkage of cavities, leading to a premature fracture of the composite.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scripta Materialia - Volume 53, Issue 3, August 2005, Pages 361-365
Journal: Scripta Materialia - Volume 53, Issue 3, August 2005, Pages 361-365
نویسندگان
Yan Feng, Xu Zhou, Zhao Min, Wu Kun,