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
	2012
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	28 期号:7 页码:614-621
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.
部门归属	[song, z. m.; zhang, g. p.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [lei, l. m.] avic commercial aircraft engine co ltd, shanghai 200241, peoples r china. [lei, l. m.; huang, x.] beijing inst aeronaut mat, titanium alloys lab, beijing 100095, peoples r china. [zhang, b.] northeastern univ, sch met & mat, minist educ, key lab anisotropy & texture mat, shenyang 110819, peoples r china.;zhang, gp (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;gpzhang@imr.ac.cn
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
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60234
专题	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.