| Isothermal and thermomechanical fatigue behaviour of a high temperature titanium alloy | |
| J. R. Liu; S. X. Li; D. Li; R. Yang | |
| 2004 | |
| Source Publication | Materials Science and Technology
 |
| ISSN | 0267-0836 |
| Volume | 20Issue:10Pages:1266-1272 |
| Abstract | Isothermal and thermomechanical fatigue (TMF) behaviour (including cyclic stress response and number of cycles to failure) of a Ti-5(.)6Al-4(.)8Sn-2(.)0Zr-1(.)0-Mo-0(.)32Si-0(.)8Nd (wt-%) hightemperature titanium alloy was examined. The purpose of the present investigation was to understand the effect of temperature fluctuation on the cyclic behaviour and fatigue life of this alloy and to test the suitability of lifetime prediction based on isothermal laboratory data. The results indicated that both the level of peak stress and fatigue life were decreasing with increasing test temperature from 400degreesC to 650degreesC in isothermal fatigue (IF) tests. In TMF tests run between 400degreesC and 600degreesC, the peak stresses corresponding to 600degreesC coincide well with that found in IF tests run at 600degreesC, while a slight increase in cyclic hardening was found for peak stress corresponding to 400degreesC compared to that found in a 400degreesC/IF test. This increase in cyclic hardening became more pronounced when the maximum temperature increased to 650degreesC. Fatigue life in 'out of phase' (OP) condition was found to be shorter than under an equivalent 'in phase' (IP) condition, and this gap increased with decreasing mechanical strain amplitude. The results indicate that lifetime prediction based on isothermal laboratory data may lead to non-conservative results if thermal fluctuations are present in components made of the present alloy. |
| description.department | chinese acad sci, met res inst, titanium alloy lab, shenyang 110016, peoples r china. chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china.;liu, jr (reprint author), chinese acad sci, met res inst, titanium alloy lab, 72 wenhua rd, shenyang 110016, peoples r china;ryang@imr.ac.cn |
| Keyword | Isothermal And Thermomechanical Fatigue High Temperature Titanium Alloys Fatigue Life Aisi-304l Stainless-steel Imi 834 Deformation-behavior Damage Mechanisms Superalloy Creep |
| URL | 查看原文 |
| WOS ID | WOS:000225103000011 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/35460 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | J. R. Liu,S. X. Li,D. Li,et al. Isothermal and thermomechanical fatigue behaviour of a high temperature titanium alloy[J]. Materials Science and Technology,2004,20(10):1266-1272. |
| APA | J. R. Liu,S. X. Li,D. Li,&R. Yang.(2004).Isothermal and thermomechanical fatigue behaviour of a high temperature titanium alloy.Materials Science and Technology,20(10),1266-1272. |
| MLA | J. R. Liu,et al."Isothermal and thermomechanical fatigue behaviour of a high temperature titanium alloy".Materials Science and Technology 20.10(2004):1266-1272. |
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