Effect of Heat Treatment on Thixoformed AM60B Alloy

Abstract:

The microstructures and kinetic characteristics have been studied during heat treatment of AM60B alloy prepared by thixoforming. The results indicate that primary particles and secondary grains coarsened rapidly in initial 1 h solution treated at 430°C, and then slowed down. Their growth modes were different in the initial 1 h and then turned to be same. Accordingly, the alloy hardness dropped quickly before 1 h. Ageing hardness depends on both content of precipitates and the morphology. Adding content of the precipitates hardened the alloy till 8 h aged at 215°C after 24 h solution treatment at 430°C, and then the precipitates coarsening weakened the ally.

• Periodical: Advanced Materials Research (Volumes 306-307)
• Pages: 500-504
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.306-307.500
• Online since: August 2011
• Authors: Hai Jun Huang, Ti Jun Chen, Ying Ma, Yuan Dong Li, Yuan Hao
• Keywords: AM60B, Heat Treatment, Kinetic, Microstructure, Thixoforming

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