Effect of extrusion temperature on mechanical properties of as-extruded Zn–22Al alloys

ABSTRACT

The effect of extrusion temperature on the microstructures and mechanical properties of as-extruded Zn–22Al alloys was investigated in this study. With decrease of extrusion temperature from 350 to 200°C, the elongation of as-extruded Zn–22Al alloys increases remarkably at low strain rate and has no change at high strain rate, which implies that the Zn–22Al alloys extruded at lower temperature exhibit high-ductility behaviour. X-ray diffraction and electron back-scattered diffraction analysis demonstrated that the maximum elongation of Zn–22Al alloys extruded at the extrusion temperature of 200°C can be attributed to the elimination of the lamellar structure and the refinement in grain size of the Zn-rich phase.

KEYWORDS:

• Zn–22Al alloy
• extrusion temperature
• elongation
• electron back scattered diffraction
• lamellar structure

Acknowledgements

This work is supported by the National Natural Science Foundation of China (No. 51525101, No.51371046). Joint Research Fund Liaoning-Shenyang National Laboratory for Materials Science.

Disclosure statement

No potential conflict of interest was reported by the author(s).

ORCID

Shineng Sun http://orcid.org/0000-0002-9435-0428

Additional information

Funding

This work is supported by the National Natural Science Foundation of China [grant number 51525101], [grant number 51371046]. Joint Research Fund Liaoning-Shenyang National Laboratory for Materials Science (grant number 2019JH3/30100018).