高Nb-TiAl合金的高温变形行为及其板材的性能

周海涛, 侯湘武, 汪彦博, 肖旅, 袁勇, 孙京丽

High-temperature Deformation Behavior and Properties of High Nb Containing TiAl Alloy

ZHOU Haitao, HOU Xiangwu, WANG Yanbo, XIAO Lv, YUAN Yong, SUN Jingli

图6 锻态Ti-44Al-8Nb-0.2W-0.2B-Y合金在1200℃/0.1 s-1/50%条件下变形后的显微组织

Fig.6 Microstructure of as-forged Ti-44Al-8Nb-0.2W-0.2B-Y alloy after hot deformation under the condition of 1200℃/0.1 s-1/50%. (a) map of phase[18], (b) orientation map inverse pole figure of α2 phase, (c) pole figure of α grain and γ grain in (a) and (d) orientation map of γ phase