Abstract

Based on the studies of influence of YAG laser heating conditions for Al alloy melt and steel on wettability, the mechanics of the laser overlap braze welding of 6056 Al and XC18 steel sheet has been investigated. Under the temperature range which is above the melting point of the Al alloy and below the melting point of the steel, two dissimilar metals can be joined by means of laser braze welding. There is no crack observed in the joining area, i.e. Al-Fe intermetallic phase (Fe3Al/FeAl/FeAl3/Fe2Al5) layer formed by solution and diffusion between liquid-solid interface. The temperature range can be defined as the process temperatures of laser braze welding of Al-Fe materials. Selecting a higher laser heating temperature can improve the wettability of Al melt to steel surface, but the intermetallic phase layer is also thicker. When the laser heating temperature is so high that the joining surface of steel is melted, there is a crack trend in the joining area.

© 2005 Chinese Optics Letters

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References

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  1. Z. Sun and R. Karppi, J. Materials Processing Technol. 59, 257 (1996).
  2. R. Brockmann and K. Dickmann, Welding and Cutting 48, 46 (1996).
  3. F. Wagner, I. Zerner, and M. Kreimeyer, in Proceeding of 20th ICALEO 92/93, 365 (2001).
  4. J. F. Ready and D. F. Farson, LIA Handbook of Laser Materials Processing (1st ed.) (Laser Institute of America, Orlando, 2001) p.300.
  5. G. Sepold and M. Kreimeyer, Proc. SPIE 4831, 526 (2003).

2003

G. Sepold and M. Kreimeyer, Proc. SPIE 4831, 526 (2003).

1996

Z. Sun and R. Karppi, J. Materials Processing Technol. 59, 257 (1996).

R. Brockmann and K. Dickmann, Welding and Cutting 48, 46 (1996).

J. Materials Processing Technol.

Z. Sun and R. Karppi, J. Materials Processing Technol. 59, 257 (1996).

Proc. SPIE

G. Sepold and M. Kreimeyer, Proc. SPIE 4831, 526 (2003).

Welding and Cutting

R. Brockmann and K. Dickmann, Welding and Cutting 48, 46 (1996).

Other

F. Wagner, I. Zerner, and M. Kreimeyer, in Proceeding of 20th ICALEO 92/93, 365 (2001).

J. F. Ready and D. F. Farson, LIA Handbook of Laser Materials Processing (1st ed.) (Laser Institute of America, Orlando, 2001) p.300.

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