Effect of Post-weld Tempering on the Microstructure and Mechanical Properties in the Simulated HAZs of a High-Strength-High-Toughness Combination Marine Engineering Steel

IMR OpenIR

	Effect of Post-weld Tempering on the Microstructure and Mechanical Properties in the Simulated HAZs of a High-Strength-High-Toughness Combination Marine Engineering Steel
	WenChao Dong 1; MingYue Wen 2; HuiYong Pang 3; ShanPing Lu 1
	2020
发表期刊	金属学报:英文版
ISSN	1006-7191
卷号	000 期号:003 页码:391-402
摘要	The effects of tempering temperatures on the microstructure and mechanical properties of the simulated coarse-grain heataffected zone(CGHAZ) and inter-critical heat-affected zone(ICHAZ) were investigated for a high-strength-high-toughness combination marine engineering steel.The results demonstrate that the microstructure of the simulated CGHAZ and ICHAZ after tempering is characterized by tempering sorbites and coarse grain in the simulated CGHAZ.As tempering temperature increases,the tensile strength of the simulated CGHAZ and ICHAZ decreases and the Charpy absorbed energy of the simulated ICHAZ at-50℃increases remarkably,but the impact toughness of the simulated CGHAZ is not improved.After tempering at 550℃,the coarse flake carbides,which distribute at the prior austenite grain and martensite lath boundaries,deteriorate the impact toughness of the simulated CGHAZ.With the increase in tempering temperature,the morphology and the size of the carbides gradually change from coarse flake to fine granular,which is beneficial to the improvement of impact toughness.However,the coarse-grain size of the simulated CGHAZ and the M23 C6-type carbide precipitated along the grain boundaries weakens the enhancing effect of carbides on impact toughness.
关键词	High-strength-high-toughness combination steel Post-weld heat treatment Heat-affected zones(HAZs) Carbides Impact toughness
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:6667163
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/143193
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.School of Materials Science and Engineering,University of Science and Technology of China 3.Wuyang Iron and Steel Co.Ltd.
推荐引用方式 GB/T 7714	WenChao Dong,MingYue Wen,HuiYong Pang,et al. Effect of Post-weld Tempering on the Microstructure and Mechanical Properties in the Simulated HAZs of a High-Strength-High-Toughness Combination Marine Engineering Steel[J]. 金属学报:英文版,2020,000(003):391-402.
APA	WenChao Dong,MingYue Wen,HuiYong Pang,&ShanPing Lu.(2020).Effect of Post-weld Tempering on the Microstructure and Mechanical Properties in the Simulated HAZs of a High-Strength-High-Toughness Combination Marine Engineering Steel.金属学报:英文版,000(003),391-402.
MLA	WenChao Dong,et al."Effect of Post-weld Tempering on the Microstructure and Mechanical Properties in the Simulated HAZs of a High-Strength-High-Toughness Combination Marine Engineering Steel".金属学报:英文版 000.003(2020):391-402.