Effects of Y Content on Microstructure and Mechanical Properties of Ti52-xAl48Yx Alloy
Ti52-xAl48Yx(x=0～1.0)alloy,was fabricated by vacuum induction method,and effects of Y content on microstructure and mechanical properties of Ti52-xAl48Yx alloy were investigated.The results indicate that Y addition can significantly refine the grain,while Al3Y and Y2O3 phase are generated in the alloy.With the increase of Y content,the grain size is decreased,and hardness is increased,which reaches the maximum of 372 HV at 1.0%.The compres-sive strength is increased and then decreased with the increase of Y content,reaching the maximum of 2230 MPa at 0.3%,which is 32%higher than that of base alloy.
TiAl AlloyY-alloyingMicrostructureMechanical Properties
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