GRAIN-SIZE DEPENDENCE OF CREEP CRACK-GROWTH IN NI-CR AUSTENITIC STEELS

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	GRAIN-SIZE DEPENDENCE OF CREEP CRACK-GROWTH IN NI-CR AUSTENITIC STEELS
	S. M. Zhu; F. G. Wang; S. J. Zhu
	1993
发表期刊	Materials Transactions Jim
ISSN	0916-1821
卷号	34 期号:5 页码:450-454
摘要	From single phase to two-phase alloys, creep crack growth behavior of Fe-15Cr-25Ni austenitic steels has been examined for different grain sizes at 973 and 1123 K. The creep crack growth rate increases with increasing grain size. An equation was found to describe the relation between the initiation time t(i) or rupture time t(r) and grain size d: t(r(i)) . d(beta) = C. The precipitation of grain boundary carbide decreases the effect of grain size on creep crack growth. Different grain size dependences on creep crack growth in other materials were also analysed. A damage model based on constrained cavity growth was shown to provide good predictions on the grain size effect on creep crack growth behavior.
部门归属	acad sinica,inst met res,natl lab fatigue & fracture mat,shenyang 110015,peoples r china.;zhu, sm (reprint author), dalian univ technol,dept mat engn,dalian 116024,peoples r china
关键词	Creep Crack Growth Rate Rupture Time Grain Size Austenitic Steel
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/39197
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. M. Zhu,F. G. Wang,S. J. Zhu. GRAIN-SIZE DEPENDENCE OF CREEP CRACK-GROWTH IN NI-CR AUSTENITIC STEELS[J]. Materials Transactions Jim,1993,34(5):450-454.
APA	S. M. Zhu,F. G. Wang,&S. J. Zhu.(1993).GRAIN-SIZE DEPENDENCE OF CREEP CRACK-GROWTH IN NI-CR AUSTENITIC STEELS.Materials Transactions Jim,34(5),450-454.
MLA	S. M. Zhu,et al."GRAIN-SIZE DEPENDENCE OF CREEP CRACK-GROWTH IN NI-CR AUSTENITIC STEELS".Materials Transactions Jim 34.5(1993):450-454.