At present. there are great technical difficulties in achieving microstructure and mechanical properties uniformity in large-size billets prepared by severe plastic deformation technology. How to improve the process route to realize the microstructure and mechanical properties uniformity of the billets has become an urgent problem to be solved at present. In this paper. https://www.spidertattooz.com/ZWO-ASI178MC-CMOS-Astrophotography-Camera/