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	Microstructure control and wear resistance of grain boundary allotriomorphic ferrite/granular bainite duplex steel
	Pingguang Xu ; Bingzhe Bai ; Fuxing Yin ; Hongsheng Fang ; Nagai, K.
	2010-05-10 ; 2010-05-10
关键词	Experimental/ abrasion alloy steel deformation grain boundaries granular materials hardness hot rolling microcracks wear resistance work hardening/ subsurface microstructure control abrasive wear resistance grain boundary allotriomorphic ferrite/granular bainite duplex steel HSLA steel hot rolled high strength low alloy steel air cooled high strength low alloy steel wet sand/rubber wheel abrasion test ferrite/pearlite steels hardness cross sectional morphology worn surfaces dispersive hard martensite austenite islands qualitative analysis work hardening deformation capacity brittle exfoliation microcrack initiation mechanisms/ A6480G Microstructure A6825 Mechanical and acoustical properties of solid surfaces and interfaces A6170N Grain and twin boundaries A8140P Friction, lubrication, and wear A6220P Tribology A8140N Fatigue, embrittlement, and fracture A6220M Fatigue, brittleness, fracture, and cracks A8140E Cold working, work hardening post-deformation annealing, recovery and recrystallisation textures A8140L Deformation, plasticity and creep A6220F Deformation and plasticity/ Fe/sur C/sur Fe/ss C/ss
中文摘要	The abrasive wear resistance of a hot-rolled and air-cooled high strength low alloy (HSLA) steel with grain boundary allotriomorphic ferrite/granular bainite (F/sub GBA//Bg) duplex microstructure was investigated by comparison with the granular bainitic steel with the same composition and other two commercial HSLA ferrite/pearlite steels. The results from the wet sand/rubber wheel abrasion test show that the F /sub GBA//Bg duplex steel possesses remarkably higher wear resistance than the two ferrite/pearlite steels, even higher than the granular bainitic steel with a higher hardness. The cross-sectional morphology of the worn surfaces reveals that the higher resistance to abrasive wear is mainly ascribed to the dispersive hard martensite/austenite (M/A) islands. The qualitative analysis on the work hardening characteristics and the microcrack initiation mechanisms indicates that in the F/sub GBA//Bg duplex steel, the existence of the grain boundary allotriomorphic ferrite and the retained austenite in the self-tempered M/A islands improves the accommodated deformation capacity of the subsurface microstructure, and prevents the brittle exfoliation occurring in the granular bainitic steel.
语种	英语 ; 英语
出版者	Elsevier ; Switzerland
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/21719]
专题	清华大学
推荐引用方式 GB/T 7714	Pingguang Xu,Bingzhe Bai,Fuxing Yin,et al. Microstructure control and wear resistance of grain boundary allotriomorphic ferrite/granular bainite duplex steel[J],2010, 2010.
APA	Pingguang Xu,Bingzhe Bai,Fuxing Yin,Hongsheng Fang,&Nagai, K..(2010).Microstructure control and wear resistance of grain boundary allotriomorphic ferrite/granular bainite duplex steel..
MLA	Pingguang Xu,et al."Microstructure control and wear resistance of grain boundary allotriomorphic ferrite/granular bainite duplex steel".(2010).

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