CYCLIC DEFORMATION FEATURES IN HIGH-PURITY TITANIUM BICRYSTALS

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	CYCLIC DEFORMATION FEATURES IN HIGH-PURITY TITANIUM BICRYSTALS
	X. L. Tan; H. C. Gu; Z. G. Wang
	1995
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	196 期号:1-2 页码:45-52
摘要	High purity alpha-titanium bicrystals were prepared using a strain-annealing method after refining twice in a vacuum electric are furnace and then growing crystals three times in a vacuum floating zone melting furnace. Reverse push-pull cycling tests were performed on bicrystals with grain boundaries oriented at about 90 degrees, 70 degrees and 35 degrees to the stress axis. The cyclic stress-strain curves of bicrystals were determined by a multiple-step test method. The position of the cyclic stress-strain curves has no direct dependence on the angle between the grain boundary plane and the stress axis. {<11(2)over bar 1>}, {<11(2)over bar 2>}, {<10(1)over bar 1>} and {<10(1)over bar 2>} types of twinning occurred during cycling. Grain boundaries sliding was observed in the specimen whose grain boundary plane is about 35 degrees inclined to the stress axis. Bunched slip bands in a braid-like pattern were observed. Fatigue cracks initiated along slip bands and grain boundaries owing to grain boundary extrusion or grain boundary sliding.
部门归属	acad sinica,inst met res,fatigue & fracture mat lab,shenyang 110015,peoples r china.;tan, xl (reprint author), xian jiaotong univ,strength met res inst,xian 710049,peoples r china
关键词	Deformation Titanium Crystals Plastic-deformation
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/38672
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. L. Tan,H. C. Gu,Z. G. Wang. CYCLIC DEFORMATION FEATURES IN HIGH-PURITY TITANIUM BICRYSTALS[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,1995,196(1-2):45-52.
APA	X. L. Tan,H. C. Gu,&Z. G. Wang.(1995).CYCLIC DEFORMATION FEATURES IN HIGH-PURITY TITANIUM BICRYSTALS.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,196(1-2),45-52.
MLA	X. L. Tan,et al."CYCLIC DEFORMATION FEATURES IN HIGH-PURITY TITANIUM BICRYSTALS".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 196.1-2(1995):45-52.