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A kind of preparation method of high-strength and toughness magnesium alloy and its plate rolling forming process

A technology of magnesium alloy and magnesium-zirconium master alloy, which is applied in the field of magnesium alloy, can solve the problems of strong residual stress of materials, difficult control of plate shape, unsatisfactory mechanical properties, etc., and achieve the effect of improving mechanical properties

Active Publication Date: 2021-09-24
TAIYUAN UNIV OF TECH
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Problems solved by technology

However, although magnesium alloys are light in weight and have many advantages mentioned above, their mechanical properties are not ideal.
[0003] In addition, there is one-step rolling forming in the current rolling process. Although this rolling process improves the efficiency, there is a strong residual stress in the material, and the shape of the plate is not easy to control.

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  • A kind of preparation method of high-strength and toughness magnesium alloy and its plate rolling forming process
  • A kind of preparation method of high-strength and toughness magnesium alloy and its plate rolling forming process
  • A kind of preparation method of high-strength and toughness magnesium alloy and its plate rolling forming process

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Embodiment Construction

[0039] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0040] A method for preparing a high-strength and toughness magnesium alloy, comprising the following steps:

[0041] S1. Selection of raw materials: magnesium block with a purity of 99.9%, zinc block with a purity of 99.9%, calcium block with a purity of 99.9%, magnesium-gadolinium master alloy, magnesium-yttrium master alloy, magnesium-neodymium master alloy and magnesium-zirconium master alloy; Cut the magnesium block according to the size of the crucible, grind the magnesium block on the grinding wheel, remove the oxide skin on the surface of the magnesium block, make the surface of the magnesium block smooth, and save it for later use; S2, prepare Mg-10Gd-2Zn-2Y-Nd master alloy:

[0042] S21. According to the mass percentage content of each element in the Mg-10Gd-2Zn-2Y-Nd master alloy, weigh magnesium block, zinc block, magnesium-gadolin...

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Abstract

A preparation method of a high-strength and toughness magnesium alloy and a rolling forming process of a plate thereof belong to the technical field of magnesium alloys. The present invention: 1. proposes a new preparation method of a high-strength and toughness magnesium alloy; 2. aims at the high-strength and toughness magnesium alloy A new thermal deformation process is proposed for the plate. The invention improves the mechanical properties of the material by designing a micro-alloyed magnesium-zinc alloy and adopting a rolling process of multiple passes and short-time annealing between passes. According to the invention, the tensile strength of the magnesium alloy is 420MPa after annealing at 250°C for 30 minutes, the yield is 380MPa, and the elongation is 8%-10%; after annealing at 350°C for 10 minutes, the strength is 340MPa, and the elongation can reach 32%.

Description

technical field [0001] The invention belongs to the technical field of magnesium alloys, and specifically relates to a preparation method of a high-strength and toughness magnesium alloy and a rolling forming process of a plate. Background technique [0002] Magnesium alloy is an alloy with the lowest density among structural materials. It is widely used in fields that require high material density. It has high specific strength, high specific stiffness, good shock absorption performance, good electromagnetic shielding performance, and cutting performance. Excellent features. However, although magnesium alloys are light in weight and have many advantages mentioned above, their mechanical properties are not ideal. [0003] In addition, there is one-step rolling forming in the current rolling process. Although this rolling process improves the efficiency, there is a strong residual stress in the material, and the shape of the plate is difficult to control. Contents of the i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C23/04C22C23/06C22F1/06C21D9/00B21C37/02
CPCB21C37/02C21D9/0081C22C1/03C22C23/04C22C23/06C22F1/06
Inventor 邓坤坤侯美丽王翠菊聂凯波王晓军
Owner TAIYUAN UNIV OF TECH