Effects of Y and Zn/Y on hot tearing susceptibility of Mg-Zn-Y-Zr alloys

被引：18
作者：
Wei, Ziqi [1 ]
Liu, Zheng [1 ]
Sheng, Xiaofang [2 ]
Wang, Yue [1 ]
Zhang, Zhenglai [3 ]
Ju, Yingdong [4 ]
机构：
[1] Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang, Liaoning, Peoples R China
[2] Wanfeng Auto Holding Grp Co Ltd, Xinchang, Peoples R China
[3] Zhejiang Huashuo Technol Co Ltd, Ningbo, Zhejiang, Peoples R China
[4] Ningbo Haizhi Inst Mat Ind Innovat, Ningbo, Zhejiang, Peoples R China
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2019年 / 35卷 / 15期
基金：
中国国家自然科学基金;
关键词：
Hot tearing susceptibility; Mg-Zn-Y-Zr alloys; Zn; Y ratio; second phase; MECHANICAL-PROPERTIES; GRAIN-REFINEMENT; ALUMINUM-ALLOYS; CRACKING; BEHAVIOR; MICROSTRUCTURE; CRITERION; PHASE;
D O I：
10.1080/02670836.2019.1652405
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of Y and Zn/Y on hot tearing susceptibility (HTS) of Mg-6.5Zn-xY-0.5Zr (x = 4, 9, 12 and 18) and Mg-5Zn-13.5Y-0.5Zr alloys were investigated herein. The results illustrated that HTS of the investigated alloys decreased in the following order: Mg-6.5Zn-4Y-0.5Zr > Mg-6.5Zn-18Y-0.5Zr > Mg-6.5Zn-9Y-0.5Zr > Mg-6.5Zn-12Y-0.5Zr > Mg-5Zn-13.5Y-0.5Zr. The results also showed that HTS of the alpha-Mg-based alloy containing only LPSO phase was lower than that of the alloy containing only W-phase and (I+W) or (W+LPSO) mixed secondary phases. This was attributed to the coherence relationship between LPSO phase and alpha-Mg, and the bridging effect of LPSO phase.
引用
收藏
页码：1872 / 1882
页数：11
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