کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1582960 | 1514877 | 2008 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Grain refinement of pure vanadium by equal channel angular pressing
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Grain refinement of pure vanadium by equal channel angular pressing Grain refinement of pure vanadium by equal channel angular pressing](/preview/png/1582960.png)
چکیده انگلیسی
Commercial vanadium of 99.8% purity was extensively grain-refined by application of equal channel angular pressing at 350 °C. A total of eight passes via route BC reduced the grain size from 100 μm to 200 nm. In the as-deformed state, the microstructure consisted mainly of lamellar grains and a smaller fraction of equiaxed grains. A strong fiber texture consisting of <1 1 1>θ and {1 1 0}θ components was also produced by severe plastic deformation. More than a threefold increase of the yield strength was realized by the processing, and a balanced combination of strength and tensile elongation, 406 MPa and 32%, respectively, was obtainable by subsequent recrystallization heat treatment at 700 °C. Dynamic recovery and continuous recrystallization are thought to be the key mechanisms with regard to characterizing the microstructure evolution during deformation and recrystallization, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 479, Issues 1â2, 25 April 2008, Pages 285-292
Journal: Materials Science and Engineering: A - Volume 479, Issues 1â2, 25 April 2008, Pages 285-292
نویسندگان
Z.Z. Jiang, S.H. Yu, Y.B. Chun, D.H. Shin, S.K. Hwang,