Thermal deformation in micro-welding of thin stainless steel sheet by single-mode fiber laser

Yasuhiro Okamoto, Satoshi Matsuoka, Mohd Idris Shah Ismail, Akira Okada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, the thermal deformation of thin stainless steel sheet in laser micro-welding were experimentally and numerically investigated. The welding deformation was experimentally evaluated using a single-mode CW fiber laser with a high-speed scanning system. The numerical simulation was developed to calculate the temperature, stress and deformation fields. It was clarified that the laser irradiation condition has a significant effect on the welding mode and stress field. In addition, the thermal deformation was influenced by the weld bead geometry and residual stress distributions, and the final deformation was formed by residual stress and plastic deformation. It was found that the tensile stress was generated around the molten zone and balanced by the compressive stress in the base material.

Original languageEnglish
Title of host publication10th International Conference on Progress of Machining Technology, ICPMT 2012
Pages144-147
Number of pages4
Publication statusPublished - 2012
Event10th International Conference on Progress of Machining Technology, ICPMT 2012 - Tsubame, Niigata, Japan
Duration: Sep 25 2012Sep 27 2012

Other

Other10th International Conference on Progress of Machining Technology, ICPMT 2012
CountryJapan
CityTsubame, Niigata
Period9/25/129/27/12

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Keywords

  • Fiber laser
  • Finite element model
  • High-speed scanning
  • Micro-welding
  • Thermal deformation

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering

Cite this

Okamoto, Y., Matsuoka, S., Ismail, M. I. S., & Okada, A. (2012). Thermal deformation in micro-welding of thin stainless steel sheet by single-mode fiber laser. In 10th International Conference on Progress of Machining Technology, ICPMT 2012 (pp. 144-147)