Abstract
The mechanism of grain refinement at large undercooling was systematically studied. Maximum undercooling of about 300 K of Ni80Cu20 alloy was achieved using molten glass purification and cyclic superheating methods. The recrystallization mechanism of grain refinement at large undercooling was verified by means of quenching and annealing. Quenching before recalescence with Ga–In–Sn liquid alloy, the microstructure of the quenched Ni80Cu20 alloy consisted of equiaxed grains and fine dendrites, which were obviously partially recrystallized microstructures. Annealing the quenched alloy, dendrites fragments were replaced by the equiaxed grains result from recrystallization. At the same time, the increase of high angle grain boundaries and ∑3 twins boundaries, the reduction of texture intensity and hardness further verified the recrystallization mechanism of grain refinement at high undercooling regime.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
