Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5015400 | International Journal of Impact Engineering | 2018 | 8 Pages |
Abstract
The spall fracture behavior of a typical metastable β titanium alloy, Ti-10V-2Fe-3Al, is systemically investigated during one-dimensional shock loading. Shock pressures over 14â¯GPa are achieved through a series of plate impact experiments. The results show that the shock-induced β-to-αⳠmartensite (SIM) phase transformation strongly influences the spall fracture behavior of this alloy. The spall strength of Ti-10V-2Fe-3Al ranges from 2.5 to 3.1â¯GPa, and drops by nearly 20% as the shock pressure exceeds 9â¯GPa. The acicular SIM phases provide additional nucleation sites and propagation paths for micro-damage, leading to the reduction of spall strength of Ti-10V-2Fe-3Al. Microstructural analyses also suggest that Ti-10V-2Fe-3Al is likely to spall in a mixed fracture manner containing both brittle and ductile failure features. The spall fracture surface of this alloy is very rough and consists of facets covered by ductile dimples.
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Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
Ren Yu, Xue Zhiyong, Yu Xiaodong, Tan Chengwen, Wang Fuchi, Cai Hongnian,