中文摘要：

对激光冲击强化（LSP）TA2工业纯钛拉伸试样在不同温度条件下的断口进行表征和分析，考察了温度对断口特征形貌和拉伸性能的影响。结果表明，在相同温度下，LSP后的试样比未处理试样的拉伸断口颈缩现象明显，且塑性更好。随着温度的逐渐升高，断裂形式从脆性断裂变为混合断裂、最后变为韧性断裂。

英文摘要：

The characterization and analysis of fractures of TA2 CP-Ti tensile specimen by laser shock processing（LSP） under different temperatures are conducted, and the effect of temperature on the characteristic fracturemorphology and the tensile property is investigated. The results show that the necking phenomenon of tensilefracture subjected to LSP is more obvious than that of the untreated sample, and the treated sample has a betterplasticity. With the gradual increment of temperature, the fracture mode turns from the brittle fracture into mixedfracture, and finally to ductile fracture.