直接包套轧制铸态Ti-46Al-8Nb合金的组织特征及热变形机制
李天瑞1, 刘国怀1(
), 于少霞2, 王文娟2, 张风奕2, 彭全义2, 王昭东1
), 于少霞2, 王文娟2, 张风奕2, 彭全义2, 王昭东1
Microstructure Evolution and Deformation Mechanisms by Direct Hot-Pack Rolling for As-Cast Ti-46Al-8Nb Alloys
LI Tianrui1, LIU Guohuai1(), YU Shaoxia2, WANG Wenjuan2, ZHANG Fengyi2, PENG Quanyi2, WANG Zhaodong1
), YU Shaoxia2, WANG Wenjuan2, ZHANG Fengyi2, PENG Quanyi2, WANG Zhaodong1
图7. 包套轧制Ti-46Al-8Nb合金板材的TEM分析
Fig.7. TEM analyses of the as-rolled microstructure of Ti-46Al-8Nb alloy
(a) dislocations in γ grains
(b) sub-structures in γ grains
(c) twinning in γ grains at colony boundaries
(d) twinning lamellae and the corresponding SAED patterns (inset)
(e) interactions of dislocations and deformation twins (f, g) decomposition of lamellar colonies (Inset in Fig.7f shows the SAED patterns of γ grains) (h) fully DRXed microstructure (Inset shows the SAED patterns of α2 grains)
