کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5455832 | 1514641 | 2017 | 31 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of Al and Si additions on the microstructure and mechanical properties of Mg-4Li alloys
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The microstructure and mechanical properties of four hot-rolled alloys, Mg-4Li, Mg-4Li-3Al, Mg-4Li-3Al-0.38Si and Mg-4Li-6Al-0.76Si, (weight percent) were investigated. The results showed that the addition of Al and Al-Si eutectic results in the precipitation of Al3Li(Mg) within the hot-rolled alloys. The Al3Li(Mg) is present as a solid solution of Mg in Al3Li with an L12 superlattice structure, which precipitates as small spherical particles. Another minor constituent present as a precipitate in the Si-containing alloys, Mg-4Li-3(Al-Si) and Mg-4Li-6(Al-Si), is a Mg2Si phase which is broken into polygonal particles in the hot-rolled alloys. Ultimate tensile strength (UTS) up to 295 MPa was measured for the Mg-4Li-6(Al-Si) alloy, compared with 143 MPa for the Mg-4Li alloy. This improvement is attributed to precipitation strengthening imparted by the Al3Li(Mg) and Mg2Si phases, as well as solid-solution strengthening due to Al atoms dissolved in the α-Mg matrix of the alloys.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 702, 15 August 2017, Pages 206-217
Journal: Materials Science and Engineering: A - Volume 702, 15 August 2017, Pages 206-217
نویسندگان
Zilong Zhao, Ziwei Sun, Wei Liang, Yide Wang, Liping Bian,