Method for preparing multi-grain scale magnesium alloy sheet by non-uniform cross-section rolling method

A non-uniform, magnesium alloy technology, used in metal rolling, metal rolling, rolling mill control devices, etc., can solve problems such as poor heat resistance, poor strength and toughness of magnesium alloys

Active Publication Date: 2020-12-11
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Compared with light alloys such as aluminum alloys and titanium alloys, magnesium alloys have poor strength and toughness
In the prior art, the fine-grain strengthening method can improve the strength and plasticity of heat-resistant magnesium alloys at the same time, but this type of magnesium alloys has the problem of poor heat resistance

Method used

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  • Method for preparing multi-grain scale magnesium alloy sheet by non-uniform cross-section rolling method
  • Method for preparing multi-grain scale magnesium alloy sheet by non-uniform cross-section rolling method
  • Method for preparing multi-grain scale magnesium alloy sheet by non-uniform cross-section rolling method

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Embodiment 1

[0034] Taking the rare earth magnesium alloy GW103K as an example, a detailed implementation is given. The following embodiments involve three steps including: non-uniform section plate forming, homogenizing annealing and multi-pass plate rolling, wherein:

[0035] Step 1: Sheet forming with non-uniform cross-section, such as figure 1 As shown, before rolling, the GW103K magnesium alloy plate 1 is put into a vacuum heat treatment furnace and heated to 330°C, and kept for 10 minutes. After taking it out, the GW103K magnesium alloy plate 1 is rolled with a semicircular pattern roll 2 immediately to form a non-woven fabric. Sheets of uniform cross-section3, such as figure 2 As shown, the upper and lower surfaces form a cross pattern.

[0036] Step 2: Annealing Annealing, put the GW103K magnesium alloy non-uniform cross-section plate 3 obtained in Step 1 into a vacuum heat treatment furnace, keep it at 325°C for 1 hour, so that the grains become uniform without excessive growth...

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Abstract

The invention belongs to the field of material preparation, and specifically discloses a method for preparing a multi-grain scale magnesium alloy sheet by a non-uniform section rolling method. The method for preparing the multi-grain scale magnesium alloy sheet by the non-uniform section rolling method comprises the following steps that (1), a non-uniform section sheet is formed, specifically, protrusions are formed in the surface of the formed non-uniform section sheet; (2) an annealing treatment is conducted; and (3) multiple passes of sheet rolling is conducted, specifically, a multi-grainscale sheet with uniform section is obtained through multiple passes of rolling. According to the method for preparing the multi-grain scale magnesium alloy sheet by the non-uniform section rolling method, a magnesium alloy sheet is rolled by different rolls, and a special heat treatment technology cooperates to prepare a multi-grain scale magnesium alloy sheet; and the heat resistance effect of arare earth magnesium alloy material retains while high strength and plasticity are achieved.

Description

technical field [0001] The invention belongs to the field of material preparation, in particular to a method for preparing a multi-grain-scale magnesium alloy plate by a non-uniform section rolling method. Background technique [0002] Magnesium alloy is the lightest metal structure material, its density is about two-thirds of aluminum alloy and one-fourth of steel. Magnesium is a very abundant material, accounting for about 2.7% of the earth's content. Magnesium alloys are widely used in military industry, aerospace, automobile and other fields. [0003] After searching the literature of the prior art, it was found that Xiaolei Wu and Yuntian Zhu published "Heterogeneous materials: a newclass of materials with unprecedented mechanical properties" (heterogeneous materials: a A material with unprecedented mechanical properties), the concept of heterogeneous materials, also known as heterogeneous materials, is a material with huge strength differences between different regio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/38B21B3/00B21B37/00B21B37/74C22F1/06C22F1/02C22C23/06
Inventor 肖礼容李磊陈雪飞曹阳李玉胜聂金凤周浩
Owner NANJING UNIV OF SCI & TECH
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