کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1639938 | 1517047 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of electromagnetic field on structure and heat treatment behavior of Mg-Li-Al alloys
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
The effects of external fields such as electromagnetic field on the structure and heat treatment behavior of Mg-Li-Al alloys were studied. Mg-8Li-3Al alloys cast with and without electromagnetic stirring were used for solution treatment and aging treatment. Experimental results show that the dendritic arms are broken and a large quantity of equiaxed grains appear in the microstructure of specimens with electromagnetic stirring (EMS). With the increase of the quenching temperature(150-350 °C), the solution of Mg and Al in solid β phase increases, and the Brinell hardness of the alloy increases as well. Aging peak and over aging happen because θ (MgLi2Al) which precipitates in the β matrix and strengthens the alloy is unstable and transforms to stable AlLi phase. Aging curves of EMS specimens change in a smaller amplitude.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 18, Supplement 1, December 2008, Pages s96-s100
Journal: Transactions of Nonferrous Metals Society of China - Volume 18, Supplement 1, December 2008, Pages s96-s100
نویسندگان
Lei-juan MA, Hai HAO, Han-wei DONG, Xing-guo ZHANG, Jun-ze JIN,