Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)
- Volume 6 Issue 3
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- Pages.16-23
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- 2007
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- 1598-6721(pISSN)
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- 2288-0771(eISSN)
Characteristics of Metal Surface Heat Treatment by Diode Laser
다이오드 레이저를 이용한 금속 표면 열처리 특성
Abstract
An experimental investigation with diode laser system was carried out to study the effect of surface heat treatment on the die materials(SM45C, SKD11, SK3). The surface heat treatment characteristics of the laser beam are evaluated using hardness tests, optical microscopy, X-ray diffraction and energy dispersive X-ray spectroscopy(EDS). Results indicated that the beam size, focal length, feed rates are changed surface hardened characteristics. SM45C is higher hardness than other materials and composed to martensite grain at hardened zone, whereas other materials(SKD11, SK3)are low hardness than expected and composed to austenite and allayed martensite at hardened zone. The intensive X-ray diffraction patterns of (110)-(200)-(211) is detected hardened surface and the hardened surface distributed plenty of carbon density than metal zone.
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