Effects of strain rate and temperature on tensile behavior of hydrogen-charged SA508 Cl.3 pressure vessel steel

IMR OpenIR

	Effects of strain rate and temperature on tensile behavior of hydrogen-charged SA508 Cl.3 pressure vessel steel
	X. Q. Wu; I. S. Kim
	2003
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	348 期号:1-2 页码:309-318
摘要	The tensile behavior of hydrogen-charged SA508 C1.3 pressure vessel steel and the dependence of strain rate at both room and high temperatures (473-623 K) was investigated. It was found that charged hydrogen induced a slight hardening and a decrease in ductility at room temperature. There was an abrupt decrease in ductility at the low strain rate of 10(-5) s(-1). Distinct quasi-cleavage or cleavage features appeared near the inclusions. However, charged hydrogen induced a softening and a decrease in ductility at the high temperatures, especially in the dynamic strain aging (DSA) region. The presence of hydrogen shifted the temperature at which DSA happens to a higher level. The fracture mode of hydrogen-charged steel was microvoid coalescence at high temperatures, with flat, or brittle-like areas, on local fracture surfaces and the dimples being smaller and shallower. Observable hydrogen effects appeared at the strain rate of approximate 10(-3) s(-1) at the high temperatures compared with 10(-5) s(-1) at room temperature. The observed tensile behavior may be attributed to interactions between hydrogen and dislocations at room temperature and between hydrogen and DSA at the high temperatures. (C) 2002 Elsevier Science B.V. All rights reserved.
部门归属	chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. korea adv inst sci & technol, dept nucl engn, yuseong gu, taejon 305701, south korea.;wu, xq (reprint author), chinese acad sci, inst met res, state key lab corros & protect, 62 wencui rd, shenyang 110016, peoples r china
关键词	Hydrogen Effects Dynamic Strain Aging Pressure Vessel Steel Mechanical Properties Assisted Ductile Fracture Fatigue-crack-growth Low-alloy Steel Serrated Flow Environment Embrittlement Carbon Iron
URL	查看原文
WOS记录号	WOS:000181508700035
引用统计	被引频次：65[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/321006/36084
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. Q. Wu,I. S. Kim. Effects of strain rate and temperature on tensile behavior of hydrogen-charged SA508 Cl.3 pressure vessel steel[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2003,348(1-2):309-318.
APA	X. Q. Wu,&I. S. Kim.(2003).Effects of strain rate and temperature on tensile behavior of hydrogen-charged SA508 Cl.3 pressure vessel steel.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,348(1-2),309-318.
MLA	X. Q. Wu,et al."Effects of strain rate and temperature on tensile behavior of hydrogen-charged SA508 Cl.3 pressure vessel steel".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 348.1-2(2003):309-318.