| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1608518 | Journal of Alloys and Compounds | 2015 | 7 Pages |
Abstract
In this study, Al84Ni8.4Y4.8La1.8Co1 particles reinforced Al-based composites were prepared by hot pressing sintering and subsequent hot extrusion. The glassy powders were produced by gas atomization and then employed to mechanical milling. After hot pressing sintering, the nano-scale intermetallic compounds precipitated from metallic glass matrix due to higher temperature than super-cooled liquid region. The mechanical properties of 2024 alloy were improved by addition of glassy particles. The ultimate compressive stress increased from 482Â MPa for 2024 alloy to 545Â MPa, 627Â MPa and 735Â MPa for composites with 20 w.t.% 40 w.t.% and 60 w.t.% glassy powders addition, respectively, together with considerable fracture strain ranging between 2.9% and 13.6%. And the mechanical properties could be predicted by using the Rule of Mixture, which predicts the mechanical properties of the bulks from the volume weighed average of the constituent properties.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Qing Yang, Yitan Zhang, Haiping Zhang, Ruixiao Zheng, Wenlong Xiao, Chaoli Ma,