U-Ti合金变形及失效机理的SHPB研究

Deformation and Failure Mechanism of U-Ti Alloy by SHPB

摘要:

利用材料试验机和SHPB实验装置研究了U-Ti合金在室温下的压缩力学行为，采用带剖面的圆柱样结合“应变冻结”和金相观测手段对重复加卸载动态变形过程中微观组织的演化开展了“原位观测”研究。结果表明：U-Ti合金具有显著的应变率效应，屈服强度和流动应力均随应变率升高而增

Abstract:

The compression behavior of U-Ti alloy was investigated over a wide range of strain rates from 10-3 to 103 s-1 by static compression tests and split hopkinson pressure bar (SHPB). Combined with the strain frozen technique and the optical micrography, the