The transformation of LPSO type in Mg-4Y-2Er-2Zn-0.6Zr and its response to the mechanical properties and damping capacities

• 作者: Dan Wang Huajie Wu Ruizhi Wu Yang Wang Jinghuai Zhang Sergey Betsofen Boris Krit Legan Hou Turahodjayev Nodir
• 来源期刊: 镁合金学报(英文)
• 学科: 工学
• 关键词: Heat treatment LPSO phases Mechanical properties Damping capacities
• 年，卷（期）: mhjxbyw_2020,（3）
• 页码范围: 793-798
• 页数: 6页
• 分类号: TG1

摘要

The transformation of LPSO type in Mg-4Y-2Er-2Zn-0.6Zr during heat treatment and its influence on damping and mechanical properties are reported in this work.Prior to heat treatment,the alloy consisted of a-Mg matrix and lamellar 14H LPSO phases.After 510℃heat treatment,lamellae shortened,and their content decreased.Upon 8h heat treatment,block 18R LPSO phases formed at the grain boundaries while 14H LPSO lamellae disappeared.Presence of block 18R LPSO phases improved mechanical and damping properties of the alloy.The corresponding mechanisms of the influence of LPSO type and morphology on mechanical and damping capacities are discussed.