Laser surface hardening of AISI H13 tool steel

An attempt was made to improve the surface hardness and wear properties of AISI H13 tool steel through solid solution hardening and refinement of microstructures using a 200 W fiber laser as a heat generating source. The hardness of laser melted zone was investigated. In order to identify the effect...

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Published inTransactions of Nonferrous Metals Society of China Vol. 19; no. 4; pp. 917 - 920
Main Authors LEE, Jae-Ho, JANG, Jeong-Hwan, JOO, Byeong-Don, SON, Young-Myung, MOON, Young-Hoon
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.08.2009
School of Mechanical Engineering, Pusan National University, Busan, 609-735, Korea
Subjects
AISI H13 tool steel
laser energy density
laser surface hardening
Vickers hardness
laser surface hardening
Vickers hardness
laser energy density
AISI H13 tool steel
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Summary:An attempt was made to improve the surface hardness and wear properties of AISI H13 tool steel through solid solution hardening and refinement of microstructures using a 200 W fiber laser as a heat generating source. The hardness of laser melted zone was investigated. In order to identify the effect of heat input on the laser melting zone, scanning conditions were controlled. The results show that, the hardness of as-received AISI H13 tool steel is approximately Hv 240, and the hardness after laser surface heat treatment is around Hv 480–510. The hardening depth and width are increased with the increase in the heat input applied. Application of experimental results will be considered in tooling industry.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:1003-6326
DOI:10.1016/S1003-6326(08)60377-5