摘要
Abstract
The influence of La on the microstructure and mechanical properties of AZ91 magnesium alloy was studied using optical microscopy,scanning electron microscopy,and other techniques.The results showed that the addition of La significantly refined the as cast microstructure of AZ91 magnesium alloy,promoting the transformation of β-Mg17Al12 phase from its original network distribution to a broken network distribution,and generating needle shaped Al11La3 high melting point precipitates at the alloy phase boundary;When the La content is 1.2%,the comprehensive mechanical properties of AZ91-1.2La alloy are optimal.关键词
AZ91镁合金/镧/合金化/显微组织/力学性能Key words
AZ91 magnesium alloy/Lanthanum/Alloying/Microstructure/mechanical property分类
矿业与冶金
