Improved Method of Fatigue Life Assessment for TiAl Alloys

被引：12

作者：

Feng, R. C. ^{[1
,2
]}

Rui, Z. Y. ^{[1
,2
]}

Zhang, G. T. ^{[1
,2
]}

Yan, C. F. ^{[1
,2
]}

Yi, X. B. ^{[1
,2
]}

机构：

[1] Lanzhou Univ Technol, Minist Educ, Key Lab Digital Mfg Technol & Applicat, Lanzhou, Peoples R China

[2] Lanzhou Univ Technol, Sch Mech & Elect Engn, Lanzhou, Peoples R China

来源：

STRENGTH OF MATERIALS | 2014年 / 46卷 / 02期

关键词：

titanium-aluminum alloys; fatigue crack; fatigue life; life assessment; improved method; MECHANICAL-PROPERTIES; MICROSTRUCTURE;

D O I：

10.1007/s11223-014-9534-x

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

For rapid fatigue life assessment of TiAl alloys, the new method was proposed based on qualitative and quantitative analyses. The qualitative analysis was employed to illustrate the microstructure effect for TiAl alloys on their fatigue life. The new formula is derived for estimation of the interaction forces of dislocations, which yields quite satisfactory results. The results of qualitative and quantitative analyses were used to predict the fatigue life improvement by the addition of trace elements producing grain refinement.

引用

页码：183 / 189

页数：7

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