한국기계가공학회지 (Journal of the Korean Society of Manufacturing Process Engineers)
- 제6권3호
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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)
다이오드 레이저를 이용한 금속 표면 열처리 특성
Characteristics of Metal Surface Heat Treatment by Diode Laser
초록
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.
키워드