Microstructure Dependent Fatigue Cracking Resistance of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si Alloy

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	Microstructure Dependent Fatigue Cracking Resistance of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si Alloy
	Z. M. Song ; L. M. Lei ; B. Zhang ; X. Huang ; G. P. Zhang
刊名	Journal of Materials Science & Technology
	2012
卷号	28 期号:7 页码:614-621
关键词	Ti alloy Fatigue crack initiation Crack propagation Microstructure dwell-time conditions mechanical-properties titanium-alloys elevated-temperatures loading frequency growth mechanisms single-crystals ti-11 alloy propagation ti-6al-4v
ISSN号	1005-0302
中文摘要	Fatigue cracking behavior from a notch was investigated at room temperature for Ti-6.5Al-3.5Mo-1.5Zr-0.3Si (TC11) alloys with four different microstructures obtained at different cooling rates from the beta transus temperature. It was found that the alloy with lamellar structures consisting of alpha/beta lamellae or acicular alpha' martensite laths had a higher fatigue crack initiation threshold from the notch, while the bimodal structure with coarse alpha grain had a lower fatigue cracking resistance. The alloy with alpha/beta lamellar structure showed a higher fatigue crack growth resistance. The length scales of the microstructures were characterized to correlate with fatigue cracking behavior. Fatigue cracking mechanism related to microstructures was discussed.
原文出处	://WOS:000308570200006
公开日期	2013-02-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/60234]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. M. Song,L. M. Lei,B. Zhang,et al. Microstructure Dependent Fatigue Cracking Resistance of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si Alloy[J]. Journal of Materials Science & Technology,2012,28(7):614-621.
APA	Z. M. Song,L. M. Lei,B. Zhang,X. Huang,&G. P. Zhang.(2012).Microstructure Dependent Fatigue Cracking Resistance of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si Alloy.Journal of Materials Science & Technology,28(7),614-621.
MLA	Z. M. Song,et al."Microstructure Dependent Fatigue Cracking Resistance of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si Alloy".Journal of Materials Science & Technology 28.7(2012):614-621.