Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of layered double-scale magnesium alloy

A magnesium alloy, layered double technology, applied in the field of layered double-scale magnesium alloy preparation, can solve the problem of high temperature control, difficult to accurately control the double-scale heredity of the internal structure of the alloy, grain growth, etc. , to avoid rolling cracking, microstructure, release stress concentration effect

Active Publication Date: 2020-01-14
YANSHAN UNIV
View PDF8 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The powder metallurgy method is to mechanically mix two kinds of powder particles with different grain sizes, and then solid-state sintering to obtain magnesium alloy bulk materials. This method requires high temperature control during the sintering process, and changes in temperature parameters will lead to crystal It is difficult to precisely control the double-scale heritability of the internal structure of the alloy due to the different degrees of grain growth.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of layered double-scale magnesium alloy
  • Preparation method of layered double-scale magnesium alloy
  • Preparation method of layered double-scale magnesium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment provides a method for preparing a layered double-scale magnesium alloy, which includes the following steps:

[0037] (1) First, carry out the homogenization heat treatment experiment of the magnesium alloy ingot in the resistance heating furnace. After the resistance furnace is heated to 420°C, place the ingot in the furnace to heat and keep it warm for 12 hours. After the homogenization heat treatment is completed, the resistance furnace is cut off. Power supply, the ingot is cooled to room temperature with the furnace; the ingot after homogenization annealing is wire cut, and several samples to be rolled are obtained with a specification of 60mm (length) × 40mm (width) × 10mm (height).

[0038](2) After the resistance heating furnace is heated to 370°C, place the sample of the magnesium alloy plate to be rolled in the furnace and keep it warm for 20 minutes. During the billet heat preservation process, the roll spacing should be adjusted to a suitable ...

Embodiment 2

[0044] This embodiment provides a method for preparing a layered double-scale magnesium alloy, which includes the following steps:

[0045] (1) First, conduct the homogenization heat treatment experiment of the magnesium alloy ingot in the resistance heating furnace. After the resistance furnace is heated to 400°C, place the ingot in the furnace to heat and keep it warm for 16 hours; after the homogenization heat treatment, cut off the resistance furnace. Power supply, the ingot is cooled to room temperature with the furnace; the ingot after homogenization annealing is wire-cut to obtain several samples to be rolled with specifications of 60mm (length) × 40mm (width) × 10mm (height);

[0046] (2) After the resistance heating furnace is heated to 280°C, place the sample of the magnesium alloy plate to be rolled in the furnace and keep it warm for 30 minutes. During the billet heat preservation process, the roll spacing should be adjusted to a suitable position by turning the ro...

Embodiment 3

[0052] This embodiment provides a method for preparing a layered double-scale magnesium alloy, which includes the following steps:

[0053] (1) First, carry out the homogenization heat treatment experiment of the magnesium alloy ingot in the resistance heating furnace. After the resistance furnace is heated to 440°C, place the ingot in the furnace to heat and keep it warm for 12 hours; after the homogenization heat treatment, cut off the resistance furnace. Power supply, the ingot is cooled to room temperature with the furnace; the ingot after homogenization annealing is wire cut, and several samples to be rolled are obtained with a specification of 60mm (length) × 40mm (width) × 10mm (height).

[0054] (2) After the resistance heating furnace is heated to 340°C, place the sample of the magnesium alloy plate to be rolled in the furnace and keep it warm for 25 minutes. During the billet heat preservation process, the roll spacing should be adjusted to a suitable position by tur...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a preparation method of a layered double-scale magnesium alloy, and belongs to the field of light metal material processing. The method comprises the following steps that isothermal heating is carried out on a magnesium alloy plate blank subjected to heating homogenization at 280-370 DEG C for 20-30 min, then the first pass of rolling deformation is immediately carried out to obtain a deformed plate, wherein the strain rate of rolling is 3.5-4.9s<-1>; and after annealing is carried out on the deformed plate, the second pass of rolling deformation is carried out at 280-340 DEG C, wherein the strain rate of rolling is 6.0-7.1s<-1>. According to the preparation method of the layered double-scale magnesium alloy, the high strain rate and gradient cooling double-pass rolling are adopted so that the high-strength toughened magnesium alloy material with the layered double-scale organizational structure can be obtained, the alternate layered distribution of the ultra-fine crystal layer and the micron crystal layer is achieved, and the strength and the plastic toughness of the magnesium alloy are improved.

Description

technical field [0001] The invention belongs to the field of light metal material processing, in particular to a method for preparing a layered double-scale magnesium alloy. Background technique [0002] With energy saving and environmental protection becoming the theme of the present era, magnesium and its alloys have been widely used in aerospace, rail transit, electronic products and other fields due to their advantages such as high specific strength, low density, good damping and shielding properties. The quantitative requirements and the shortage of energy resources have greatly promoted the development of magnesium alloys. With the increasingly complex service environment of engineering components, the performance requirements of magnesium alloys are getting higher and higher. However, as the lightest metal structure material used in engineering, magnesium alloy has a typical close-packed hexagonal crystal structure, and has low stacking fault energy and few independe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C22F1/06C22C23/02
CPCC22C23/02C22F1/06
Inventor 徐岩李玮虎鹏鸿阎泽文刘孝轲贾建波杨志刚彭伟劲
Owner YANSHAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com