Effect of Squeeze Casting and Solution Treatment on the Microstructure and Properties of ZA27 Worm Wheel

Abstract:

Compared with permanent mold casting, the microstructure, mechanical properties, friction and wear of squeeze casting ZA27 alloy were studied. The results showed that squeeze casting can reduce or eliminate shrinkage porosity defect, refine or improve the microstructure and the shape and distribution of copper-rich ε phase which leads to the obvious improvement of the performance. In addition, with the increase of solution temperature, higher degree of super-saturation can enhance the tensile strength and hardness of ZA27 alloy. The better deformation coordination is an important factor to the enhancement of elongation. Remelting among grain boundaries leads to the deterioration of performance rapidly.

• Periodical: Materials Science Forum (Volume 817)
• Pages: 63-70
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.817.63
• Online since: April 2015
• Authors: Quan Li Zhu, Zi Yong Wu, Jia Jian Chen
• Keywords: Mechanical Property, Solution Treatment, Squeeze Casting, ZA27 Alloy

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