Effect of melt overheating treatment on the microstructure and mechanical properties of Zn–Al alloy

Xianke Lu, Shengjie Xiao, Wenquan He, Junjie Wang, Yiming Ma, Henghua Zhang

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

This study focused on the effect of overheating treatment on the microstructure and tensile mechanical property of zinc-aluminum alloy. Ingots with designed composition were manufactured by melting pure metals and cast at different temperatures from 500 °C to 650 °C. Microstructure, strength and fracture mechanism were studied and their relationships with overheating temperature were analyzed. Dendrite size decreased with increasing overheating temperature and turned to equiaxed crystal at 650 °C. The yield stress, ultimate tensile stress and elongation increased by 16%, 31% and 163%, respectively after overheating treatment. It was also found that with the increase of overheating temperature, the brittle fracture mechanism gradually turns to a mixed fracture mechanism.

Original languageEnglish
Article number111071
JournalVacuum
Volume201
DOIs
StatePublished - Jul 2022
Externally publishedYes

Keywords

  • Fracture mechanism
  • Microstructure
  • Overheating treatment
  • Zinc-aluminum alloy

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