热等静压温度和粉末粒度对Ti<sub>2</sub>AlNb合金组织与性能的影响

热等静压温度和粉末粒度对Ti₂AlNb合金组织与性能的影响

刘巧沐,吴杰,陈玉龙,陈乾明,裴会平,徐磊

Effect of Temperature and Powder Particle Size on Mechanical Properties and Microstructure of PM Ti₂AlNb Alloy Prepared via Hot Isostatic Pressing

Qiaomu LIU,Jie WU,Yulong CHEN,Qianming CHEN,Huiping PEI,Lei XU

表2 两种制粉工艺制备的Ti₂AlNb粉末冶金合金拉伸性能和持久寿命

Table 2 Tensile and rupture properties at room and elevated temperature of PM Ti₂AlNb alloys with different original particle size

	Temperature /℃	UTS/MPa	EI./%	L/h
D₅₀=70 μm	20	1029	8.0	103
D₅₀=70 μm	650	731	14.0	103
D₅₀=200 μm	20	991	6.0	65
D₅₀=200 μm	650	706	16.0	65
D₅₀=100 μm with typical process	20	1040	8.5	110
D₅₀=100 μm with typical process	650	800	15.0	110