کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9795265 | 1514431 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Deformation behavior and microstructural evolution during the semi-solid compression of Al-4Cu-Mg 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 effects of the process parameters, including deformation temperature and strain rate, on the deformation behavior and microstructure of an Al-4Cu-Mg alloy, have been investigated through isothermal compression. Experiments were conducted at deformation temperatures of 540 °C, 560 °C, and 580 °C, strain rates of 1 sâ1, 1Ã10â1 sâ1, 1Ã10â2 sâ1, and 1Ã10â3 sâ1, and height reductions of 20%, 40%, and 60%. The experimental results show that deformation temperature and strain rate have significant effect on the peak flow stress. The flow stress decreases with an increase of deformation temperature and/or a decrease of the strain rate. Above a critical value of the deformation temperature, the flow stress quickly reaches a steady value. Experimental materials A and B have equiaxed and irregular grains, respectively, prior to deformation. The microstructures vary with the process parameters in the semi-solid state. For material B, the irregular grains transform to equiaxed grains in the process of semi-solid deformation, which improves the deformation behavior.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 54, Issues 4â5, May 2005, Pages 423-430
Journal: Materials Characterization - Volume 54, Issues 4â5, May 2005, Pages 423-430
نویسندگان
Yalin Lu, Miaoquan Li, Weichao Huang, Haitao Jiang,