HIGH-STRENGTH, HIGH-TOUGHNESS, AND HIGH-HARDNESS MAGNESIUM-BASED HIGH-ENTROPY ALLOY AND PREPARATION METHOD THEREFOR

摘要

A high-strength, high-toughness, and high-hardness magnesium-based high-entropy alloy and a preparation method therefor; based on Mg, the main elements Al, Gd, Y, and Zn that are beneficial for the strengthening and hardening of magnesium alloys were selected to develop a high-strength, high-toughness, and high-hardness magnesium-based high-entropy alloy and a preparation method therefor. The engineering stress-strain curve of the magnesium-based high-entropy alloy has obvious processing hardening characteristics, the micro-hardness being HV103.3-HV123.7, the room temperature tensile strength being 458.01-496.65 MPa, and the post-breaking compression ratio being 14.83-17.28%; the preparation method is simple and the conditions easy to control.