Experimental Study on Wear Test of Grind-Hardened Layer

Ju Dong Liu; Wei Yuan

doi:10.4028/www.scientific.net/AMR.562-564.115

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 562-564Experimental Study on Wear Test of Grind-Hardened...

Experimental Study on Wear Test of Grind-Hardened Layer

Abstract:

40Cr steel was grind-hardened on a surface grinder. The microstructure, wear resistance and wear mechanism of the grind-hardened layer were studied. The results indicate that the grind-hardened layer consists of the lath martensite and twin martensite, dislocation density is higher in the lath martensite. The microhardness is up to 670 HV0.5 and the compressive residual stresses exist in the grind-hardened layer. Compared with the matrix, the wear resistance of the grind-hardened layer is increased by 6-11 times. The wear mechanisms of the grind-hardened layer are characterized abrasive and oxidation under dry sliding conditions.

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Periodical:

Advanced Materials Research (Volumes 562-564)

Pages:

115-118

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.562-564.115

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Online since:

August 2012

Authors:

Ju Dong Liu, Wei Yuan

Keywords:

Grinding, Microstructure, Surface Hardening, Wear Mechanism, Wear Resistance

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