Hot Cracking in Welds of Aluminum and Magnesium Alloys

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Abstract

Hot cracking in fusion and solid-state welding of aluminum alloys, magnesium alloys, and aluminum alloys to magnesium alloys is discussed. This includes: (1) liquation cracking in the partially melted zones of arc and resistance spot welds, (2) liquation cracking in the stir zones in friction stir welds, and (3) solidification cracking in the fusion zones of arc and resistance spot welds. Recent data of hot tearing (that is, solidification cracking during casting) in magnesium castings, which can be used to study solidification cracking in magnesium welds, are presented. These include the hot tearing susceptibility of new creep-resistant magnesium alloys and the test method used for evaluating the susceptibility.

Keywords

Weld Metal Friction Stir Welding Weld Pool Friction Stir Welding Resistance Spot 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Notes

Acknowledgements

The research was supported by the National Science Foundation under Grants DMR-9803589, DMR-0098776, DMR-0309468 and DMR-0605662 and by the Wisconsin Alumni Research Foundation of the University of Wisconsin-Madison. The authors would like to thank Professor Y. Austin Chang of the University of Wisconsin at Madison, WI for using the software package Pandat, and Professor Rainer Schmid-Fetzer of Clausthal University of Technology at Clausthal-Zellerfeld, Germany for using the database PanMg. They would also like to thank former graduate students C. Huang, C. Cao and Y. K. Yang for their research work on hot cracking.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  1. 1.Department of Materials Science and EngineeringUniversity of WisconsinMadisonUSA

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