Preparation method for magnesium alloy of double-peak structure

• Main Authors: ZHANG XUEZHENG, WANG YANMING, CHEN TIJUN
• Format: Patent
• Language: Chinese; English
• Published: 07.09.2021
• Subjects: CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a preparation method for a magnesium alloy of a double-peak structure, and belongs to the technical field of preparation of magnesium alloys of double-peak structures. The preparation method comprises the following steps that semi-solid partial remelting is carried out on a magnesium alloy cast ingot under a protective atmosphere, then thixoforming is carried out, solution treatment is conducted on a thixoformed product, water quenching is immediately carried out after the treatment is finished, and then the magnesium alloy of the double-peak structure can be obtained. By means of the thixoforming and solution treatment technology, the proportion of coarse grains to fine grains can be adjusted and controlled at will by changing the partial remelting temperature, the size of the coarse grains is controlled by adjusting the grain size of an initial ingot and the remelting heat preservation time, and the grain size of two components can be further regulated and controlled through subseque