Weak-basal-texture high-strength magnesium-lithium alloy and preparation method thereof

Abstract

The invention discloses a weak-basal-texture high-strength magnesium-lithium alloy and a preparation method thereof. The weak-basal-texture high-strength magnesium-lithium alloy is prepared from the following components in percentage by mass: 1-5% of Li, 0.3-0.6% of Ca, 0.1-0.2% of Ce, 0.1-0.2% of Y, less than or equal to 0.2% of total impurity elements and the balance of Mg. Through alloying, rolling and heat treatment, the strength of the magnesium-lithium alloy can be improved while the basal texture of the magnesium-lithium alloy is weakened.

Description

technical field

[0001] The invention relates to the technical field of metal materials, in particular to a high-strength magnesium-lithium alloy with weak base surface texture and a preparation method thereof. Background technique

[0002] Magnesium alloy has the advantages of low density, high specific strength, good damping and shock resistance, etc. It has a very wide application prospect in the fields of automobile, national defense, aerospace, electronics and other industries, and is known as "the green engineering material of the 21st century". By adding Li to magnesium alloys for alloying, its density can be further reduced. Therefore, magnesium-lithium alloys have a wide range of potential applications in aerospace and other fields that require high weight reduction. However, since the critical shear stress of magnesium-lithium alloy basal slip is much smaller than that of non-basal slip, it is easy to form a strong basal texture during rolling deformation, resulting...