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Preparation method of high-strength and high-toughness Mg89Y4Zn2Li5 wrought magnesium alloy for engineering structural member

A wrought magnesium alloy, high-strength and high-toughness technology, applied in the field of high-strength and high-toughness Mg89Y4Zn2Li5 wrought magnesium alloy preparation, can solve the problems of low density characteristics, density increase, etc.

Pending Publication Date: 2022-02-11
ZHONGBEI UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

The density of Mg-Y-Zn series magnesium alloy will continue to rise with the increase of rare earth elements, so it loses its valuable low-density characteristics to a certain extent

Method used

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  • Preparation method of high-strength and high-toughness Mg89Y4Zn2Li5 wrought magnesium alloy for engineering structural member
  • Preparation method of high-strength and high-toughness Mg89Y4Zn2Li5 wrought magnesium alloy for engineering structural member
  • Preparation method of high-strength and high-toughness Mg89Y4Zn2Li5 wrought magnesium alloy for engineering structural member

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Embodiment Construction

[0048] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail in combination with the embodiments and accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. The technical solutions of the present invention will be described in detail below in conjunction with the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0049] A kind of high-strength and high-toughness Mg for engineering structural parts 89 Y 4 Zn 2 Li 5 The preparation method of wrought magnesium alloy, the specific preparation method is as follows:

[0050] (1) Mg 89 Y 4 Zn 2 Li 5 Melting of magnesium alloys.

[0051] The main equipment used in the smelting of the present invention includes drying oven (TYLG-04 typ...

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Abstract

The invention belongs to the technical field of non-ferrous metal hot extrusion forming processing. The invention discloses a preparation method of a high-strength and high-toughness Mg89Y4Zn2Li5 wrought magnesium alloy for an engineering structural member. The method comprises the following steps of: firstly, adding Li into a molten Mg-Y-Zn magnesium alloy, and sequentially refining and pouring to obtain the Mg89Y4Zn2Li5 magnesium alloy; carrying out solution treatment on the as-cast Mg89Y4Zn2Li5 magnesium alloy; and enabling the solid solution Mg89Y4Zn2Li5 magnesium alloy to be subjected to hot extrusion deformation, wherein the extrusion temperature is 350 DEG C, the extrusion speed is 6 mm / min, and the extrusion ratio is 25 / 1. The novel high-toughness Mg89Y4Zn2Li5 alloy is prepared through large-extrusion-ratio slow extrusion, and the compressive strength, the yield strength and the fracture compression ratio of the novel high-toughness Mg89Y4Zn2Li5 alloy reach 632 MPa, 430 MPa and 20.2% respectively.

Description

technical field [0001] The invention belongs to the technical field of hot extrusion forming of nonferrous metals, and in particular relates to a high-strength and high-toughness Mg used for engineering structural parts 89 Y 4 Zn 2 Li 5 Preparation method of wrought magnesium alloy. Background technique [0002] As the automotive industry, aerospace and other manufacturing industries continue to increase their requirements for lightweight and high fuel utilization, people have put forward higher requirements for the application of magnesium and magnesium alloys. How to improve the strength and toughness of magnesium alloys to meet The application of structural materials has become the focus and difficulty in the field of magnesium alloy research. Mg-Y-Zn series magnesium alloys with long-period stacking ordered (Long-periodstacking ordered, LPSO) structure have attracted extensive attention of researchers for their unique microstructure and excellent mechanical propertie...

Claims

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Application Information

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IPC IPC(8): C22C1/03C22C23/06C22F1/06
CPCC22C1/03C22C23/06C22F1/06
Inventor 柳伟赵宇宏王涛张云涛苏雨陈利文董瑞峰侯华
Owner ZHONGBEI UNIV
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