Joining of dissimilar and bright metals with nanosecond nir pulsed fiber lasers

Abstract

Bright and dissimilar metals present unique challenges to joining as a result of high reflectivity in the near infra-red causing periodic coupling events, splatter, and/or defects. In this presentation, results are presented on joining solutions for thin sections of bright and dissimilar metal-alloys with nanosecond pulsed lasers. This approach is in contrast to current approaches to joining, where more conventional welding methods are used for bright-dissimilar metals using other laser welding solutions. This paper will focus on an alternative laser beam joining method through the use of nanosecond pulsed fiber lasers.Bright and dissimilar metals present unique challenges to joining as a result of high reflectivity in the near infra-red causing periodic coupling events, splatter, and/or defects. In this presentation, results are presented on joining solutions for thin sections of bright and dissimilar metal-alloys with nanosecond pulsed lasers. This approach is in contrast to current approaches to joining, where more conventional welding methods are used for bright-dissimilar metals using other laser welding solutions. This paper will focus on an alternative laser beam joining method through the use of nanosecond pulsed fiber lasers.