The effect of machining on the fatigue strength of a gamma titanium aluminide intertmetallic alloy

被引：56
|
作者：
Bentley, SA [1 ]
Mantle, AL
Aspinwall, DK
机构：
[1] Univ Birmingham, IRC Mat High Performance Applicat, Birmingham B15 2TT, W Midlands, England
[2] Univ Birmingham, Sch Mfg & Mech Engn, Birmingham B15 2TT, W Midlands, England
来源：
INTERMETALLICS | 1999年 / 7卷 / 08期
基金：
英国工程与自然科学研究理事会;
关键词：
titanium aluminides; based on TiAl; fatigue resistance and crack growth; machining;
D O I：
10.1016/S0966-9795(99)00008-4
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Experimental data is presented which compares the effect of grinding and high speed milling (HSM) on the fatigue strength of a gamma titanium aluminide intermetallic alloy. Results showed that HSM significantly increased fatigue strength by as much as 200 MPa over polished samples. Measurement and analysis of workpiece subsurface microhardness and microstructure indicated that the high run-out values correlated to high hardness and plastic deformation of the near surface lamellae. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：967 / 969
页数：3
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