High-performance micro-welding of aluminum alloy by combination of pulsed Nd:YAG laser and continuous diode laser

Yasuhiro Okamoto, Shinichi Nakashiba, Tomokazu Sakagawa, Akira Okada

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

Abstract

The combination of pulsed Nd:YAG laser and continuous diode laser could perform high-performance micro-welding for aluminum alloy, since the continuous diode laser made it possible to keep the high temperature during an interval time of laser irradiation. Therefore, the high-efficient absorption of pulsed Nd:YAG laser energy would be expected, and 15% increase in the bead width and 150% increase in the penetration depth could be achieved with better surface integrity. In addition, a pulsed Nd:YAG laser was absorbed effectively from the beginning of laser scanning by the pre-heating pulse of pulsed Nd:YAG laser with the superposition of continuous LD. The combination of pre-heating pulse and continuous LD made the welding phenomenon stable from the beginning of laser scanning. Moreover, the appropriate post-heating by the continuous diode laser led the reduction of crack generation with the control of temperature history.

Original languageEnglish
Title of host publicationMaterials Science and Technology Conference and Exhibition 2012, MS and T 2012
Pages332-339
Number of pages8
Publication statusPublished - Dec 1 2012
EventMaterials Science and Technology Conference and Exhibition 2012, MS and T 2012 - Pittsburgh, PA, United States
Duration: Oct 7 2012Oct 11 2012

Publication series

NameMaterials Science and Technology Conference and Exhibition 2012, MS and T 2012
Volume1

Other

OtherMaterials Science and Technology Conference and Exhibition 2012, MS and T 2012
CountryUnited States
CityPittsburgh, PA
Period10/7/1210/11/12

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Keywords

  • Aluminum alloy
  • Diode laser
  • Micro-welding
  • Superposition
  • YAG laser

ASJC Scopus subject areas

  • Materials Science (miscellaneous)

Cite this

Okamoto, Y., Nakashiba, S., Sakagawa, T., & Okada, A. (2012). High-performance micro-welding of aluminum alloy by combination of pulsed Nd:YAG laser and continuous diode laser. In Materials Science and Technology Conference and Exhibition 2012, MS and T 2012 (pp. 332-339). (Materials Science and Technology Conference and Exhibition 2012, MS and T 2012; Vol. 1).