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http://dx.doi.org/10.12656/jksht.2011.24.4.203

A Study on Hardening Characteristics of Carbon Steel by Using Finite Element Method  

Hwang, Hyun-Tae (Ulsan Technopark)
So, Sang-Woo (Ulsan Technopark)
Kim, Jong-Do (Division of Marine Engineering, Korea Maritime University)
Publication Information
Journal of the Korean Society for Heat Treatment / v.24, no.4, 2011 , pp. 203-208 More about this Journal
Abstract
Recently, from general machine parts and automobile parts using carbon steel to a mold, there has been efforts for improving durability and attrition resistance of these parts. Especially, heat treatment with laser which works fast and automatically can be used for the mass production with high quality. Moreover, local heat treatment can be used to handle with complex and precise parts. Accordingly, we analyzed hardening characteristics of carbon steel using the finite element method and compare the experimental results to have more reliability. We also proved the cause of thermal deformation with temperature and stress distribution by heat treatment. After these analysis and experimental, we found that each maximum hardness of the two tests was 728 Hv and 700 Hv, on condition of $1050^{\circ}C$ heating temperature, and 2 mm/sec laser speed. We also found that difference of surface stress-distribution was occurred, and this makes deformation mode up after heat treatment.
Keywords
HPDL(High power diode laser); Laser surface treatment; Carbon steel;
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