V添加对Ti2AlNb合金组织演变及硬度的影响

刘子儒, 郭乾应, 张虹雨, 刘永长

Effects of V on the Microstructure Evolution and Hardness Enhancement of Ti2AlNb Alloy

LIU Ziru, GUO Qianying, ZHANG Hongyu, LIU Yongchang

表3 不同时效处理后合金中B2相晶格常数与晶面间距

Table 3 Lattice constarts (a) and interplanar spacings (d) of the B2 phase in the alloy with different aging temperatures

Temperature / oC Alloy a / nm d(110) / nm d(200) / nm d(211) / nm 800 Ti-22Al-25Nb 0.32518 0.22994 0.16259 0.13275 Ti-22Al-25Nb-1V 0.32455 0.22949 0.16227 0.13250 850 Ti-22Al-25Nb 0.32512 0.22989 0.16256 0.13273 Ti-22Al-25Nb-1V 0.32455 0.22949 0.16227 0.13250 900 Ti-22Al-25Nb 0.32506 0.22985 0.16253 0.13271 Ti-22Al-25Nb-1V 0.32398 0.22909 0.16199 0.13226 950 Ti-22Al-25Nb 0.32428 0.22930 0.16214 0.13239 Ti-22Al-25Nb-1V 0.32368 0.22888 0.16184 0.13214 1000 Ti-22Al-25Nb 0.32413 0.22919 0.16206 0.13232 Ti-22Al-25Nb-1V 0.32365 0.22886 0.16182 0.13213 1050 Ti-22Al-25Nb 0.32446 0.22943 0.16223 0.13246 Ti-22Al-25Nb-1V 0.32398 0.22909 0.16199 0.13226