摘要
比较不同显微组织条件下TC4ELI合金的断裂韧性,并从断裂韧性本质定义的角度分析影响材料断裂韧性的因素。不同状态下TC4ELI合金断裂韧性值表明,片层组织具有较高的断裂韧性,且断裂韧性大体上随屈服强度的升高而降低。从疲劳裂纹尖端塑性区的角度阐述了影响材料断裂韧性的因素。
Fracture toughness Kic of TC4ELI alloys with different microstructures was tested, and the essential definition of Kic was introduced to explain the influence of microstructure on KIC. The results show that lamellar microstructure has high Kic value, and the KIC value increases with the decreasing of yield stress. Finally the crack tip plastic zone CTPZ was introduced to interpret the variations Of KIC.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2010年第B10期414-418,共5页
The Chinese Journal of Nonferrous Metals
关键词
钛合金
断裂韧性
裂纹尖端塑性区
titanium alloy
fi＇acture toughness
crack tip plastic zone
