Effect of Y Alloying on Microstructure and Mechanical Properties of Ti-48Al Alloy

被引：0
|
作者：
Jianglei Fan
Zexin Wei
Liubo Liang
Ying Li
Shen Wu
Yan Wang
Xiangkui Zhou
Jianxiu Liu
机构：
[1] Zhengzhou University of Light Industry,Institute of Mechanical and Electrical Engineering, Henan Key Laboratory of Intelligent Manufacturing of Mechanical Equipment
[2] Zhengzhou University of Light Industry,Henan Engineering Research Center of Advanced Materials Processing and Testing
来源：
JOM | 2022年 / 74卷
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摘要：
The effects of Y content (ranged from 0.1 at.% to 2.0 at.%) on the microstructure evolution and mechanical properties of Ti-48Al (at.%) alloy were investigated. The addition of Y can significantly refine the microstructure. The grain size is decreased with increasing Y content. The microhardness of Ti-48Al-xY (at.%) is increased with increasing Y content because of the volume fraction increment of Al3Y and Y2O3 with higher hardness. When the Y content increased to 1.0 at.%, the microhardness of the Ti-48Al-xY (at.%) alloys tends to be stable. With the increase of Y content, the compression strength of Ti-48Al-xY (at.%) alloys is increased first and then decreased. The Ti-48Al-0.5Y (at.%) alloy exhibits the best compression strength (2229 MPa), which is 15% higher than that of Ti-48Al (at.%) alloy. The fracture mechanism of the alloy is brittle fracture. The fracture modes are mainly translamellar and interlamellar fracture.
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页码：4806 / 4816
页数：10
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