Effect of grain size, notch width, and testing temperature on the fracture toughness of Ti3Si(Al)C-2 and Ti3AlC2 using the chevron-notched beam (CNB) method

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	Effect of grain size, notch width, and testing temperature on the fracture toughness of Ti3Si(Al)C-2 and Ti3AlC2 using the chevron-notched beam (CNB) method
	D. T. Wan; F. L. Meng; Y. C. Zhou; Y. W. Bao; J. X. Chen
	2008
发表期刊	Journal of the European Ceramic Society
ISSN	0955-2219
卷号	28 期号:3 页码:663-669
摘要	In this work, the effects of grain size, notch width, and testing temperature on the fracture toughness of two typical MAX phases, Ti3Si(Al)C-2 and Ti3AlC2, were investigated using the chevron-notched beam (CNB) method. The high-fracture toughness in the range of 6.43-10.19 MPa m(1/2) was determined. The critical notch width is about 250 mu m for the valid fracture toughness measurements of Ti3Si(Al)C-2 and Ti3AlC2. For a fixed notch width and testing temperature, the fracture toughness of coarse-grained (CG) samples is higher than that of fine-grained (FG) samples, and the toughness of Ti3AlC2 is higher than that of Ti3Si(Al)C-2. Furthermore, the high-temperature fracture toughness of Ti3Si(Al)C-2 and Ti3AlC2 samples show a similar trend that the measured toughness is nearly a constant when the testing temperature is before the ductile-brittle transition temperature (DBTT) and then it declines fast over DBTT. The mechanism for the high-fracture toughness of Ti3Si(Al)C-2 and Ti3AlC2 is also discussed. (c) 2007 Published by Elsevier Ltd.
部门归属	[wan, d. t.; meng, f. l.; zhou, y. c.; bao, y. w.; chen, j. x.] chinese acad sci, inst met res, shenyang natl lab mat sci, high performance ceram div, shenyang 110016, peoples r china. [wan, d. t.; meng, f. l.] chinese acad sci, grad sch, beijing 100039, 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	Fracture Toughness Ti3si(Al)C-2 Ti3alc2 Cnb Method Testing Fatigue-crack Growth Mechanical-properties Elevated-temperatures Oxidation Resistance Damage Tolerance Silicon-nitride Bulk Ceramics Ti3sic2 Composites Specimens
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WOS记录号	WOS:000252108900019
引用统计	被引频次：44[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/321006/33111
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. T. Wan,F. L. Meng,Y. C. Zhou,et al. Effect of grain size, notch width, and testing temperature on the fracture toughness of Ti3Si(Al)C-2 and Ti3AlC2 using the chevron-notched beam (CNB) method[J]. Journal of the European Ceramic Society,2008,28(3):663-669.
APA	D. T. Wan,F. L. Meng,Y. C. Zhou,Y. W. Bao,&J. X. Chen.(2008).Effect of grain size, notch width, and testing temperature on the fracture toughness of Ti3Si(Al)C-2 and Ti3AlC2 using the chevron-notched beam (CNB) method.Journal of the European Ceramic Society,28(3),663-669.
MLA	D. T. Wan,et al."Effect of grain size, notch width, and testing temperature on the fracture toughness of Ti3Si(Al)C-2 and Ti3AlC2 using the chevron-notched beam (CNB) method".Journal of the European Ceramic Society 28.3(2008):663-669.