Effect of notch root radius on fracture toughness of Ti-18Al-8Nb alloy

被引：4
|
作者：
Paradkar, A. [1 ]
Gogia, A. K. [2 ]
Kamat, S. V. [1 ]
机构：
[1] Def Met Res Lab, Hyderabad 500058, Andhra Pradesh, India
[2] Kaveri Engine Programme, Project Off Mat, Hyderabad 500058, Andhra Pradesh, India
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2009年 / 25卷 / 04期
关键词：
Fracture toughness; Notch root radius; Strain controlled fracture; Titanium alloy; TITANIUM ALUMINIDE ALLOY; TI3AL-NB ALLOY; MODE-I; MICROSTRUCTURE; ALPHA-2; BEHAVIOR; STRESS;
D O I：
10.1179/174328408X296015
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of notch root radius on the mode I fracture toughness of Ti-18Al-8Nb alloy in beta solution treated and water quenched condition was investigated. The apparent fracture toughness K-IA was found to be independent of the notch root radius below a critical notch root radius rho(0) and subsequently increase linearly with the square root of notch root radius rho(1/2) beyond rho(0). The critical notch root radius in this alloy was found to be similar to 50 mu m. The results were explained on the basis of strain controlled fracture model.
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页码：515 / 519
页数：5
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