کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1582250 | 1514874 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Plastic flow localization in h.c.p. Zr alloys on macro- and microscale levels
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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 regular features exhibited by plastic strain localization on macro- and microscale levels at the parabolic strain hardening stage are examined for commercial Zr alloys used in nuclear power industry. The plastic flow shows instability, which is manifested as oscillatory variation of space-time distributions of local strain patterns as revealed by speckle interferometry. It is shown that the periodic accumulation of deformation in the flow nuclei enhances the evolution of dislocation structure within the nuclei so that one of them becomes a prefracture zone in which necking would finally occur. The data obtained are discussed within the framework of a synergetic approach to plastic deformation evolution at the final flow stage.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volumes 483–484, 15 June 2008, Pages 91–94
Journal: Materials Science and Engineering: A - Volumes 483–484, 15 June 2008, Pages 91–94
نویسندگان
T.M. Poletika, S.L. Girsova, S.V. Kolosov, G.N. Narimanova,