Journal
2012 INTERNATIONAL CONFERENCE ON FUTURE ENERGY, ENVIRONMENT, AND MATERIALS, PT A
Volume 16, Issue -, Pages 103-108Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.egypro.2012.01.019
Keywords
Grinding; Surface hardening; Microstructure; Micro-hardness; Hardened layer depth
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On the basis of the surface grinding-hardening test, the influence of depth of cut and original microstructure on the hardened layer depth, microstructure and micro-hardness of the hardened layer were studied. The results show that the hardened layer is consisted of completely hardened region and transitional region. The completely hardened region is composed of mixed martensite, residual austerities and a little carbide. There were no remarkable effects of the depth of cut and original structure on the martensite configuration and micro-hardness value in completely hardened region. The micro-hardness value of the completely hardened region can be up to 750-780HV. However, microstructure of the transitional region varies with different original structure. When the depth of cut or uniformity of original structure increase, the hardened layer depth increases accordingly. Thus in practical production, it should adopt large depth of cut or use the original structure with quenched and tempered to increase the hardened layer depth. (C) 2011 Published by Elsevier B.V. Selection and/or peer-review under responsibility of International Materials Science Society.
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