Evolution of adiabatic shear bands in typical microstructure of Ti-6Al-4V alloy

Jing Zhang, Chengwen Tan*, Xinqin Liu, Fuchi Wang, Hongnian Cai

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

10 引用 (Scopus)

摘要

In order to investigate evolution of adiabatic shear bands in typical microstructure (bimodal and lamellar microstructures) of Ti-6Al-4V alloy, the split Hopkinson press bar (SHPB) was used to impact hat-shaped specimens, and three impact bars of different length were used to control the loading time (50, 60 and 80μs). SEM and TEM were carried out to observe patterns of adiabatic shear bands (ASBs) in the specimens after impacting. The results showed that thickness of ASBs increased with the increase of loading time, and with the increase of loading time, evolution of ASBs in bimodal and lamellar microstructure was quite different. In lamellar microstructure, equiaxed structure was found in the specimen under the loading time of 80μs, which might indicate that dynamic recrystallization happened. It led the thickness of ASB in lamellar microstructure thicker than that in bimodal microstructure.

源语言英语
页(从-至)648-651
页数4
期刊Xiyou jinshu
33
5
DOI
出版状态已出版 - 10月 2009

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