Paper Title:
Visual Study on Surface Micro-Topography and Residual Stress of Sheet Metal after Pulsed Laser Peening
  Abstract

In order to control surface microscopic quality of sheet metal after laser peen forming (LPF), visual numerical analyses for SUS304 plate was employed. Based on the FEM code ABAQUS/CAE, a conversion model of laser shock wave loading was established. The tracks controlling technology of LPF was solved by functional element programs. The micro-plastic flow process of surface material was analyzed, and the change of residual stress distribution as well as micro-topography in real time can be shown with the movement of pulsed laser beam. On the basis of FEM simulation, LPF experiments were carried out. The micro-topography and section analysis were analyzed by AFM, surface residual stress was measured by X-ray diffraction method. It was found that after LPF, the surface irregularity was less than 0.15μm, the variation of average surface roughness was slight, both sides of deformed sheet existed useful residual compressive stress, and the maximum stress was -616.1MPa, meanwhile average surface micro-hardness in the peened zone was higher than the base’s surface. Simulative results show a good agreement with experimental results.

  Info
Periodical
Key Engineering Materials (Volumes 373-374)
Main Theme
Edited by
M.K. Lei, X.P. Zhu, K.W. Xu and B.S. Xu
Pages
334-337
DOI
10.4028/www.scientific.net/KEM.373-374.334
Citation
S. Huang, J. Z. Zhou, J. J. Du, Y. Q. Sun, M.X. Ni, "Visual Study on Surface Micro-Topography and Residual Stress of Sheet Metal after Pulsed Laser Peening ", Key Engineering Materials, Vols. 373-374, pp. 334-337, 2008
Online since
March 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: L.J. Wang, Zheng Dong Wang, Guo Dong Wang, Xiang Hua Liu
613
Authors: Rimma Lapovok
Abstract:Equal Channel Angular Extrusion (ECAE) has become a very popular tool for studying the evolution of microstructure and properties under...
37
Authors: Yin Fang Jiang, Lei Fang, Zhi Fei Li, Zhen Zhou Tang
Abstract:As a new lightweight material and new technique,Tailor Rolled Blanks has a good prospect in energy-saving environmental protection and the...
488
Authors: Chang Long Liu, Da Pei Tang
Abstract:Thermal residual stress in diamond film deposited onto Mo substrate was simulated and analyzed comprehensively by using the finite element...
1199
Authors: F.C. Cione, J.L. Rossi, A.C. Souza, S. Delijaicov, M.A. Colosio
Chapter 3: Ceramics II
Abstract:Many engineering specifications, manufacturing procedures, inspection and quality control have begun to require that the residual stress of a...
1925