Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 385, Issue 1-2, Pages 65-73Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2004.04.073
Keywords
abrasive wear; material removal/failure mechanisms; plastic deformation; grain boundary allotriomorphic ferrite; granular bainite; high strength low alloy steel
Ask authors/readers for more resources
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-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 FGBA/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-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. (C) 2004 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available