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Proceedings Paper

Improving metallic material properties by controlling the boundary condition of laser heat treatment
Author(s): Yihong Guan; Jun-rong Zhang; Bang-ping Wang; Junruo Chen
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Paper Abstract

In this paper, according to theory of thermal elastoplastic and phase transformation, combined with characteristic of laser quenching, the effect of cooling velocity on temperature field and phase contents is analyzed, mathematical model of transformation during laser quenching and nonlinear heat conduction equation is presented. The computer simulation oftemperature field and distribution of volume in hardening depth after laser quenching are proposed. Also, after laser quenching experiment of 40Cr steel under case of controlling boundary condition, it can be shown that theoretic calculation fits to experimental result, and a new feasible approach is provided to improve the high-toughness of metallic material.

Paper Details

Date Published: 5 September 2002
PDF: 6 pages
Proc. SPIE 4914, High-Power Lasers and Applications II, (5 September 2002); doi: 10.1117/12.481786
Show Author Affiliations
Yihong Guan, Kunming Univ. of Science and Technology (China)
Jun-rong Zhang, Kunming Shipbuilding Equipment Co. Ltd. (China)
Bang-ping Wang, Kunming Univ. of Science and Technology (China)
Junruo Chen, Kunming Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 4914:
High-Power Lasers and Applications II
Dianyuan Fan; Keith A. Truesdell; Koji Yasui, Editor(s)

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