کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5451520 | 1513712 | 2017 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure and mechanical properties at elevated temperature of Mg-Al-Ni alloys prepared through powder metallurgy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
شیمی مواد
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Mg-Al-Ni alloys were prepared by powder metallurgy, and their microstructure and elevated temperature mechanical properties were investigated. Results indicate that, in addition to α-Mg matrix, both coarse Al3Ni2 particles and fine AlNi nano-particles exist in the Mg-Al-Ni alloys. The strength at 150 °C is improved with the increase in Ni content. Mg-18.3Al-8Ni alloy possesses a compressive strength of 234.7 MPa and a yield strength of 146.5 MPa. Plasticity is also improved with a low concentration of Ni. Mg-11.3Al-2Ni alloy possesses a compression ratio of 17.3%. The phases of Al3Ni2 and AlNi in the alloys block the movements of grain boundaries and dislocations during the deformation at elevated temperature. The existence of AlNi phase provides a non-basal slip system, leading to the improvement in plasticity. Finally, the formation mechanism of Al-Ni phases in the process is discussed with thermodynamics and kinetics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Science & Technology - Volume 33, Issue 9, September 2017, Pages 947-953
Journal: Journal of Materials Science & Technology - Volume 33, Issue 9, September 2017, Pages 947-953
نویسندگان
Legan Hou, Bingcheng Li, Ruizhi Wu, Lin Cui, Peng Ji, Ruiying Long, Jinghua Zhang, Xinlin Li, Anping Dong, Baode Sun,