Sheikholeslami, Ghazal, Griffiths, Jonathan David, Dearden, Geoff and Edwardson, Stuart (2016) Optimization of process parameters for high efficiency laser forming of advanced high strength steels within metallurgical constraints. Physics Procedia, 83 . pp. 277-285. ISSN 1875-3892
Full content URL: http://dx.doi.org/10.1016/j.phpro.2016.08.025
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1-s2.0-S1875389216301328-main.pdf - Whole Document Available under License Creative Commons Attribution Non-commercial No Derivatives. 916kB |
| Item Type: | Article |
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| Item Status: | Live Archive |
Abstract
Laser forming (LF) has been shown to be a viable alternative to form automotive grade advanced high strength steels (AHSS). Due to their high strength, heat sensitivity and low conventional formability show early fractures, larger springback, batch-to-batch inconsistency and high tool wear.
In this paper, optimisation of the LF process parameters has been conducted to further understand the impact of a surface heat treatment on DP1000. A FE numerical simulation has been developed to analyse the dynamic thermo-mechanical effects. This has been verified against empirical data. The goal of the optimisation has been to develop a usable process window for the LF of AHSS within strict metallurgical constraints. Results indicate it is possible to LF this material, however a complex relationship has been found between the generation and maintenance of hardness values in the heated zone. A laser surface hardening effect has been observed that could be beneficial to the efficiency of the process.
| Keywords: | Laser forming, Laser, Optimization, AHSS, Micro hardness, NotOAChecked, JCOpen |
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| Subjects: | H Engineering > H100 General Engineering |
| Divisions: | College of Science > School of Engineering |
| ID Code: | 24863 |
| Deposited On: | 28 Oct 2016 08:54 |
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