کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1583010 1514882 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced creep parameters of Al-Zn alloy induced by cyclic stress reduction
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Enhanced creep parameters of Al-Zn alloy induced by cyclic stress reduction
چکیده انگلیسی
Transient and steady state creep parameters, β, n and ε′s were measured for Al-12.6 wt.% Zn alloy samples at static condition and superimposed (stress reduction and frequency) in the temperature range from 443 to 503 K. The static stress was 8.86 MPa and the stress reduction σcy ranged from 1.28 to 2.99 MPa. The applied frequency ranged from 0.12 to 0.35 Hz. Increased temperature T, stress reduction σcy and frequency ν decreased the parameter n but increased both β and ε′st. The activation energy decreased with increasing σcy and/or ν due to Zn precipitation. The ratio γ showed high values relating the transient and steady creep stages.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 474, Issues 1–2, 15 February 2008, Pages 230-235
نویسندگان
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