冷却速率对<i>β</i>凝固<i>γ</i>-TiAl合金硼化物和室温拉伸性能的影响

冷却速率对β凝固γ-TiAl合金硼化物和室温拉伸性能的影响

王希,刘仁慈,曹如心,贾清,崔玉友,杨锐

Effect of Cooling Rate on Boride and Room Temperature Tensile Properties of β-Solidifying γ-TiAl Alloys

Xi WANG,Renci LIU,Ruxin CAO,Qing JIA,Yuyou CUI,Rui YANG

表2 不同厚度铸板的室温拉伸性能

Table 2 Tensile properties of samples taken from step plate with different thickness at room temperature

Thickness mm	No.	Yield strength MPa	Ultimate strength MPa	Elongation %
4	1	732	744	0.27
	2	717	733	0.29
8	1	683	743	0.57
	2	671	720	0.47
12	1	666	793	1.17
	2	666	756	0.79