Austempering of hot rolled transformation-induced plasticity steels

IMR OpenIR

	Austempering of hot rolled transformation-induced plasticity steels
其他题名	Austempering of hot rolled transformation-induced plasticity steels
	Li Zhuang 1; Wu Di 2
	2008
发表期刊	JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING
ISSN	1005-8850
卷号	15 期号:2 页码:143-149
摘要	Thermomechanical controlled processing (TMCP) was conducted by using a laboratory hot rolling mill. Austempering in the salt bath after hot rolling was investigated. The effect of isothermal holding time on mechanical properties was studied through examining of the microstructure and mechanical properties of the specimens. The mechanism of transformation-induced plasticity (TRIP) was discussed. The results show that the microstructure of these steels consists of polygonal ferrite, granular bainite, and a significant amount of stable retained austenite. Strain-induced transformation to martensite of retained austenite and TRIP occur in the hot rolled Si-Mn TRIP steels. Excellent mechanical properties were obtained for various durations at 400 degrees C. Prolonged holding led to cementite precipitation, which destabilized the austenite. The mechanical properties were optimal when the specimen was held for 25 min, and the tensile strength, total elongation, and strength ductility balance reached the maximum values of 776 MPa, 33%, and 25608 MPa.%, respectively. (c) 2008 University of Science and Technology Beijing. All rights reserved.
其他摘要	Thermomechanical controlled processing (TMCP) was conducted by using a laboratory hot rolling mill. Austempering inAustempering in the salt bath after hot rolling Was investigated. The effect of isothermal holding time on mechanical properties was studied throughing of the microstructure and mechanical properties of the specimens. The mechanism of transformation-induced plasticity (TRIP) was discussed. The results show that the microstructure of these steels consists of polygonal ferrite, granular bainite, and ad TRIP occur in the hot rolled Si-Mn TRIP steels. Excellent mechanical properties were obtained for various durations at 400℃. Prolonged holdingprecipitation, which destabilized the austenite. The mechanical properties were optimal when the specimen was held for 25 min, and the tensile strength, total elongation, and strength ductility balance reached the maximum values of 776 MPa, 33%,respevtively.
关键词	MN TRIP STEELS MECHANICAL-PROPERTIES RETAINED AUSTENITE MICROSTRUCTURE SI DEFORMATION ADDITIONS austempering hot rolling transformation induced plasticity mechanical properties
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:3316385
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/156241
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.东北大学
推荐引用方式 GB/T 7714	Li Zhuang,Wu Di. Austempering of hot rolled transformation-induced plasticity steels[J]. JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING,2008,15(2):143-149.
APA	Li Zhuang,&Wu Di.(2008).Austempering of hot rolled transformation-induced plasticity steels.JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING,15(2),143-149.
MLA	Li Zhuang,et al."Austempering of hot rolled transformation-induced plasticity steels".JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING 15.2(2008):143-149.