Low shear strength and shear-induced failure in Ti3SiC2

IMR OpenIR

	Low shear strength and shear-induced failure in Ti3SiC2; Low shear strength and shear-induced failure in Ti3SiC2
	Y. W. Bao; Y. C. Zhou
	2003 ; 2003
发表期刊	Journal of Materials Science & Technology ; Journal of Materials Science & Technology
ISSN	1005-0302 ; 1005-0302
卷号	19 期号:3 页码:197-200
摘要	Shear strength and shear-induced Hertzian contact damage in Ti3SiC2 were investigated using double-notched-beam specimen and steel spherical indenter, respectively. The shear strength of 40 MPa that was only about 10% of bending strength was obtained for this novel ceramic. The SEM fractograph of specimens failed in shear test indicated a combination of intergranular and transgranular fracture. Under a contact load, plastic indent without cone crack could be formed on the surface of Ti3SiC2 sample. Optical observation on side view showed half-circle cracks around the damage zone below the indent, and the crack shape was consistent with the contrail of the principal shearing stress. The low shear strength and the shearing-activated intergranular sliding were confirmed being the key factors for failure in Ti3SiC2.; Shear strength and shear-induced Hertzian contact damage in Ti3SiC2 were investigated using double-notched-beam specimen and steel spherical indenter, respectively. The shear strength of 40 MPa that was only about 10% of bending strength was obtained for this novel ceramic. The SEM fractograph of specimens failed in shear test indicated a combination of intergranular and transgranular fracture. Under a contact load, plastic indent without cone crack could be formed on the surface of Ti3SiC2 sample. Optical observation on side view showed half-circle cracks around the damage zone below the indent, and the crack shape was consistent with the contrail of the principal shearing stress. The low shear strength and the shearing-activated intergranular sliding were confirmed being the key factors for failure in Ti3SiC2.
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, shenyang 110016, peoples r china ; 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, shenyang 110016, peoples r china
关键词	Ti3sic2 Ti3sic2 Shear Strength Shear Strength Contact Damage Contact Damage Double-notched Specimen Double-notched Specimen Titanium-silicon Carbide Titanium-silicon Carbide Contact Damage Contact Damage Ceramics Ceramics Ductile Ductile Size Size
URL	查看原文 ; 查看原文
WOS记录号	WOS:000183282000002 ; WOS:000183282000002
引用统计	被引频次：4[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/321006/35787
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. W. Bao,Y. C. Zhou. Low shear strength and shear-induced failure in Ti3SiC2, Low shear strength and shear-induced failure in Ti3SiC2[J]. Journal of Materials Science & Technology, Journal of Materials Science & Technology,2003, 2003,19, 19(3):197-200, 197-200.
APA	Y. W. Bao,&Y. C. Zhou.(2003).Low shear strength and shear-induced failure in Ti3SiC2.Journal of Materials Science & Technology,19(3),197-200.
MLA	Y. W. Bao,et al."Low shear strength and shear-induced failure in Ti3SiC2".Journal of Materials Science & Technology 19.3(2003):197-200.