Microstructure and Mechanical Properties of Al-1.1Mg-0.6Si-0.4Cu Alloy Manufactured by Casting-Forging Integrated Technology

Abstract:

In the present investigation the casting-forging integrated technology was adopted to manufacture Al-1.1Mg-0.6Si-0.4Cu alloy automobile brake calipers. The effect of forging pressure on the microstructure and mechanical properties of Al-1.1Mg-0.6Si-0.4Cu alloy calipers were studied. The results showed that the shrinkage porosities and cracks in the Al-1.1Mg-0.6Si-0.4Cu alloy calipers could be removed by the forging process. The ultimate tensile strength and elongation of Al-1.1Mg-0.6Si-0.4Cu alloy calipers increased with the increase of forging pressure. When the forging pressure was 120 MPa, the ultimate tensile strength and elongation of Al-1.1Mg-0.6Si-0.4Cu alloy calipers with T6 heat treatment were 365.3 MPa and 11.5%, which were improved by 22.8% and 38.2%, respectively compared with that of Al-1.1Mg-0.6Si-0.4Cu alloy calipers without forging. The tensile fracture images revealed that the fracture modes of Al-1.1Mg-0.6Si-0.4Cu alloy calipers were more ductile at higher forging pressure.

• Periodical: Materials Science Forum (Volume 850)
• Pages: 762-767
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.850.762
• Online since: March 2016
• Authors: Shun Cheng Wang, Dong Fu Song, Jing Xu, Kaihong Zheng
• Keywords: Aluminum Alloy, Automobile Brake Calipers, Casting-Forging Integrated Technology

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