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Laser shock forming on coated metal sheets characterized by ultrahigh-strain-rate plastic deformation

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3 Author(s)
Zhou, Ming ; College of Material Science and Engineering, Jiangsu University, 212013 Zhenjiang, China ; Zhang, Yongkang ; Cai, Lan

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.1459624 

We report on a dynamic ultrahigh-strain-rate forming method driven by laser impact. This investigation reveals that laser shock forming is a mechanical, not a thermal process, and the strain rate can go up to 107–109s-1, two or more orders higher than that of all the existing forming methods. By investigating the hardness and residual stress of the surfaces, we conclude that laser shock forming is a technique with combining laser shock strengthening and metal forming, which introduces strain hardening and compressive residual stresses. We also discover some nonlinear plastic deformation characters in laser shock forming. © 2002 American Institute of Physics.

Published in:

Journal of Applied Physics  (Volume:91 ,  Issue: 8 )

Date of Publication:

Apr 2002

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