کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1583073 | 1514881 | 2008 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Semisolid processing AZ91 magnesium alloy by electromagnetic stirring after near-liquidus isothermal heat treatment
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
AZ91 magnesium alloy was semisolid processed under experimental conditions designed to yield from 3 to 40% of the primary particles, and the semisolid slurry was produced by electromagnetic stirring after feedstock had been isothermally heat treated at near-liquidus temperature. The thixotropic microstructures obtained were characterized in detail and linked to the corresponding tensile properties. A unique microstructure was exhibited that the primary particles conglutinated together to form clusters due to sliding between solid particles and plastic deformation of solid particles during semisolid deformation [C.P. Chen, C.-Y.A. Tsao, Acta Mater. 45 (5) (1997) 1955-1968] which resulted from electromagnetic stirring. An increase of solid fraction exacerbated this agglomerating phenomenon accompanying an increment of β-Mg17Al12 content, and those finally resulted in a reduction in elongation. The fractographic analysis revealed that fracture mechanism and corresponding morphology of the rapture surface of tensile bars depend on the solid fraction of the primary particles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 475, Issues 1â2, 25 February 2008, Pages 194-201
Journal: Materials Science and Engineering: A - Volume 475, Issues 1â2, 25 February 2008, Pages 194-201
نویسندگان
Zhang Xiao-li, Li Ting-ju, Teng Hai-tao, Xie Shui-sheng, Jin Jun-ze,