Low anisotropic deformation Mg-6Zn-0.45Zr alloy preparation method

Abstract

The invention relates to a low anisotropic deformation Mg-6Zn-0.45Zr alloy preparation method. The low anisotropic deformation Mg-6Zn-0.45Zr alloy preparation method comprises alloy heat treatment andheat processing, the alloy heat treatment heat preservation temperature is 330+ / -5 DEG C, the heat preservation time is 10+ / -0.5 h, and the cooling manner is air cooling; and the alloy heat processing temperature is 300+ / -5 DEG C, the heat perseveration time before heat processing is 10+ / -1 min, the heat processing manner is small path strain high-strain rate three-dimensional forging, forging equipment is an air hammer, repeated heating is avoided between paths, the path strain capacity is (10+ / -0.5)%, the quantity of the transformation path is 24, and the cooling manner is air cooling. According to the low anisotropic deformation Mg-6Zn-0.45Zr alloy preparation method, an approximate solid solution structure is obtained through high-temperature short-time heat treatment, the high-speeddeformation temperature rise effect is used for offsetting temperature drop caused by heat radiating, heating is not needed before paths, the serious anisotropism is avoided by small path strain three-dimensional cyclic loads, the machining period is short, and the low anisotropic deformation Mg-6Zn-0.45Zr alloy preparation method is suitable for low anisotropic block Mg-6Zn-0.45Zr alloy production.

Description

technical field [0001] The invention relates to a method for preparing a deformed Mg-6Zn-0.45Zr magnesium alloy, in particular to a method for preparing a low-anisotropy deformed Mg-6Zn-0.45Zr alloy bulk material. Background technique [0002] Magnesium alloy is the lightest metal structure material with high specific strength, high specific stiffness, good vibration damping ability, excellent thermal conductivity and electrical conductivity, good dimensional stability, electromagnetic shielding and easy recycling. In recent years, with the increasingly prominent energy and environmental issues, magnesium alloys have rapidly emerged as new engineering materials, and have gradually become ideal substitutes for engineering materials such as aluminum alloys, steel, and engineering plastics. Electrical appliances and other fields have important application value and broad application prospects. [0003] Because the grain structure of cast magnesium alloy is coarser than that of...

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Problems solved by technology

[0003] Because the grain structure of cast magnesium alloy is coarser than that of the second phase, and there are defects such as pores and shrinkage cavities, its mechanical properties are not ideal enough to meet the needs of high-performance structural materials. Therefore, the research and development of wrought magnesium alloys has become its Important development direction of industrial demand

During the plastic processing of magnesium alloys, the slip system that can be started is limited, which leads to the formation of strong anisotropy after plastic deformation, which limits the wide application of deformed magnesium alloys to a certain extent.

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