中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
High-temperature mechanical behavior and deformation mechanism of Ti-47Al-2W-0.5Si creep-resistant alloy

文献类型:期刊论文

作者Zhou, LZ; Guo, JT; Lupinc, V; Maldini, M
刊名ACTA METALLURGICA SINICA
出版日期2001-08-18
卷号37期号:8页码:785-790
关键词intermetallics TiAl mechanical property creep
ISSN号0412-1961
通讯作者Zhou, LZ()
英文摘要High-temperature mechanical behavior and deformation mechanism of Ti-47Al-2W-0.5Si cast alloy have been investigated. The results show that, the TiAl base intermetallic exhibits improved mechanical properties over the conventional IN713LC superalloy on density-corrected yield strength from RT to high temperature, and density-corrected creep strength at 650 degreesC. Its minimum creep rate increases with increasing of applied stress and creep temperature, and can be expressed by the creep formula <()over dot>(m)=A((sigma)/(E))(10)exp(-(420)/(RT)). Decrease of the initial creep rate is attributed to piling up and tangling of dislocations emanated from the alpha (2)/gamma interfaces. Deformation twinning is suggested to be a result of a stress-relief process due to the inhibition of dislocations during deformation. It was found that deformation twins and shear bands can form in the primary creep stage. Evolution of microstructures, including coarsening and phase transformation of alpha (2) laths, was also observed. Besides, industrial application and development of the alloy are involved.
WOS研究方向Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:000172767100001
出版者SCIENCE CHINA PRESS
源URL[http://ir.imr.ac.cn/handle/321006/113181]  
专题金属研究所_中国科学院金属研究所
通讯作者Zhou, LZ
作者单位1.CNR, TEMPE, I-20125 Milan, Italy
2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714
Zhou, LZ,Guo, JT,Lupinc, V,et al. High-temperature mechanical behavior and deformation mechanism of Ti-47Al-2W-0.5Si creep-resistant alloy[J]. ACTA METALLURGICA SINICA,2001,37(8):785-790.
APA Zhou, LZ,Guo, JT,Lupinc, V,&Maldini, M.(2001).High-temperature mechanical behavior and deformation mechanism of Ti-47Al-2W-0.5Si creep-resistant alloy.ACTA METALLURGICA SINICA,37(8),785-790.
MLA Zhou, LZ,et al."High-temperature mechanical behavior and deformation mechanism of Ti-47Al-2W-0.5Si creep-resistant alloy".ACTA METALLURGICA SINICA 37.8(2001):785-790.

入库方式: OAI收割

来源:金属研究所

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