| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8011962 | Transactions of Nonferrous Metals Society of China | 2017 | 7 Pages |
Abstract
Minor Dy element was added into a Mg-4Y-3Nd-0.4Zr alloy, and its effects on the microstructure and the mechanical properties at elevated temperatures were investigated. Scanning electron microscope (SEM) and transmission electron microscope (TEM) were used to observe the microstructures. The results indicated that the as-cast eutectic and isolated cuboid-shaped Mg-RE phases were Mg5RE and Mg3RE17, respectively, and distributed mainly along grain boundaries. After a solution treatment, the eutectic Mg5RE phases were dissolved into the matrix, whereas the Mg3RE17 compound still remained. After peak aging, fine Mg-RE phases were precipitated homogeneously within the matrix of the alloys containing Dy. Dy addition can result in a significant improvement in the tensile strength at both room and elevated temperatures, and a slight decrease in the elongation.
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Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Hong-hui LIU, Zhi-liang NING, Jun-ying YI, Qian MA, Hai-chao SUN, Yong-jiang HUANG, Jian-fei SUN,