Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference (한국윤활학회:학술대회논문집)
- 1998.04a
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- Pages.292-299
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- 1998
A Study on the Surfaces Modification of Tool Steel by YAG LASER
YAG LASER에 의한 공구강의 표면개질에 관한 연구
Abstract
Case hardening behavior of tool steel(SK5) was investigated after YAG laser irradiation. In the case of beam passes, martensite formed in the melt zone and in former pearlite regions of the austenization zone exhibited very high Vickers Hardness values. The molten depth and radius, micro structure, hardness were investigated as a function of defocusing distance, pulse width, and power density.