铸造技术2018，Vol.39Issue(5)：996-999,4.DOI:10.16410/j.issn1000-8365.2018.05.013
微量Y元素对AZ91D镁合金组织与力学性能的影响
Effects of Microscale Y on Microstructure and Mechanical Properties of AZ91D Alloy
刘伯玉 1元炬凤2
作者信息
- 1. 扬州工业职业技术学院 机械与汽车工程学院,江苏 扬州 225127
- 2. 四川大学 材料工程学院,四川 成都 610000
- 折叠
摘要
Abstract
The effect of element Y on microstructure and mechanical properties of AZ91D alloy was investigated. The results show that the addition of Y element in the casting process of AZ91D magnesium alloy can effectively refine and reduce the second phase of β-Mg17Al12, and a new compound phase Al2Y is formed. The tensile strength and elongation of magnesium alloy increase at first and then decrease with the increase of Y content at the conditions of both room temperature (20 ℃) and 160 ℃, and the mechanical properties are optimal when Y content is 0.6％. Furthermore, the fracture mechanism of the alloy at room temperature transforms from brittle fracture to ductile fracture with increasing the Y content in the magnesium alloy from 0 to 0.6％.关键词
Y元素/AZ91D镁合金/微观组织/力学性能Key words
Y element/AZ91D alloy/microstructure/mechanical properties分类
矿业与冶金引用本文复制引用
刘伯玉,元炬凤..微量Y元素对AZ91D镁合金组织与力学性能的影响[J].铸造技术,2018,39(5):996-999,4.
