ABSTRACT
Grain boundary migration in different casting processes directly affects the grain size of the ingot, which affects the mechanical properties of the alloy. In this study, Cu–Cr–Zr–Ti rods are manufactured using upward continuous casting and casting-extrusion processes followed by drawing. It is found that the strength of the upward continuous casting rods is 621 MPa, greater than that of the casting-extrusion rods 571 MPa, which is a result of different microstructure evolution during solution treatment. Calculations of the driving force and resistance of grain boundary migration were performed to explain the observations.
Acknowledgements
The authors express their thanks to Dr Jianbo Zhang, Dr Xiangpeng Xiao, Dr Hao Huang, Dr Haigen Wei and Dr Sarah Dodds.
Disclosure statement
No potential conflict of interest was reported by the authors.
ORCID
Weibin Xie http://orcid.org/0000-0003-1830-3862