Dynamic compressive behaviour and microstructural evolution of extrusion-shear deformed ZC61 alloy

Abstract

In this study, a novel extrusion-shear (ES) deformation method was developed to prepare ZC61 alloy. The dynamic mechanical properties and microstructure of specimen were studied at a temperature in the range of 25–350°C and strain rate of 1300 s⁻¹. The results demonstrated by ES exhibited a strong {0001} basal texture, resulting in the obvious anisotropy. The shapes of stress–strain curves of samples exhibited significant differences at low temperature (<250 °C) when compression was carried out along extrusion direction (ED) and extrusion radial direction (ERD). Dynamic recrystallization occurred at the loading temperature of 300°C along ED due to the energy provided by high-density dislocation in twins. However, no obvious dynamic recrystallization was observed for the ERD samples.

KEYWORDS:

• ZC61 alloy
• dynamic compressive behaviour
• slip and twinning
• anisotropy
• dynamic recrystallization

Acknowledgements

Thanks to the financial supports from Liaoning Revitalization Talents Program (No. XLYC1907007 and XLYC1807021), Youth Project of Liaoning Education Department (No. LQGD2019002 and LQGD 2019004), High level innovation team of Liaoning Province (XLYC1908006), and Innovation Talent Program in Science and Technology for Young and Middle-aged Scientists of Shenyang (No. RC180111).

Disclosure statement

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

Additional information

Funding

This work was supported by Liaoning Revitalization Talents Program: [Grant Number XLYC1907007]; Liaoning Revitalization Talents Program: [Grant Number XLYC1807021]; High level innovation team of Liaoning Province: [Grant Number XLYC1908006]; Youth Project of Liaoning Education Department: [Grant Numbers LQGD2019002 and LQGD 2019004]; Innovation Talent Program in Science and Technology for Young and Middle-aged Scientists of Shenyang: [Grant Number RC180111].