Study on Solidification Crack Criterion during Laser Welding Pure Aluminum and ZL114A Aluminum Alloy

Abstract:

Laser welding of 1A90 pure aluminum and ZL114A aluminum alloy with powder under the same laser welding parameters were carried out in this work. The relation between weld elements and solidification cracking formation of these two materials was investigated in the perspective of metallurgical factor. And the alloy element contents and distribution near the cracks were determined by scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDS). Then the concept of weld element equivalent was introduced comparing with the carbon equivalent expression. The weld element equivalent expressions were established by using mathematics regress. And the verified results indicate that the weld element equivalent expressions can properly forecast the formation of solidification cracking.

• Periodical: Advanced Materials Research (Volumes 308-310)
• Pages: 852-858
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.308-310.852
• Online since: August 2011
• Authors: An Guo Huang, Hu Zhang, Jing Fu Liu, Wei Yu, Zhi Yuan Li, Hao Li
• Keywords: Laser Welding, Pure Aluminum and Zl114a Aluminum Alloy, Solidification Cracking, Weld Element Equivalent

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