Punch-shear tests and size effects for evaluating the shear strength of machinable ceramics

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	Punch-shear tests and size effects for evaluating the shear strength of machinable ceramics
	Y. W. Bao; H. B. Zhang; Y. C. Zhou
	2004
发表期刊	Zeitschrift Fur Metallkunde
ISSN	0044-3093
卷号	95 期号:5 页码:372-376
摘要	Various sample thicknesses and punch diameters were used in punch-shear tests for investigating the size effects in evaluating the shear strength of machinable ceramics. The ratio of the sample thickness to the punch diameter was defined as the relative thickness that strongly affects the measured shear strength in a certain range. It was found that there was a threshold value in the relative thicknesses (similar to0.1 for Ti3AlC2 and similar to0.13 for Ti3SiC2) above which the measured shear strength increased linearly with increasing thickness. The threshold provided a thickness-requirement for valid punch-shear tests, and stable shear strength was obtained under this requirement using 3 mm and 1.8 mm punch diameters, respectively. Experiments using various loading rates suggested that the shear strength measured by the punch-shear test was almost immune from the loading rates. The mechanism of the size effects was analysed through optical and SEM observations.
部门归属	chinese acad sci, inst met res, shenyang natl lab mat sci, high performance ceram div, shenyang 110016, peoples r china.;zhou, yc (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, high performance ceram div, 72 wenhua rd, shenyang 110016, peoples r china;yczhou@imr.ac.cn
关键词	Punch-shear Test Shear Strength Size Effects Machinable Ceramics Liquid Reaction Synthesis Elevated-temperatures Ti3sic2 Ti3alc2 Carbide Microstructure Composites Failure
URL	查看原文
WOS记录号	WOS:000221884300016
引用统计	被引频次：13[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/35309
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. W. Bao,H. B. Zhang,Y. C. Zhou. Punch-shear tests and size effects for evaluating the shear strength of machinable ceramics[J]. Zeitschrift Fur Metallkunde,2004,95(5):372-376.
APA	Y. W. Bao,H. B. Zhang,&Y. C. Zhou.(2004).Punch-shear tests and size effects for evaluating the shear strength of machinable ceramics.Zeitschrift Fur Metallkunde,95(5),372-376.
MLA	Y. W. Bao,et al."Punch-shear tests and size effects for evaluating the shear strength of machinable ceramics".Zeitschrift Fur Metallkunde 95.5(2004):372-376.