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

A heat treatment method for improving damage resistance of aluminum-lithium alloy sheet

A heat treatment method and technology of aluminum-lithium alloy, applied in the field of heat treatment of aluminum alloy sheets, can solve problems such as unfavorable damage resistance performance, affecting the dimensional uniformity of wide-width plates, etc., so as to improve preparation efficiency and yield, improve damage resistance, and improve The effect of damage resistance

Active Publication Date: 2018-03-09
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A small amount of cold deformation before solid solution can ensure damage resistance but will affect the dimensional uniformity of the wide sheet, while a large cold deformation can obtain better dimensional uniformity, but will form fine recrystallization during solid solution tissue, detrimental to damage resistance

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
  • A heat treatment method for improving damage resistance of aluminum-lithium alloy sheet
  • A heat treatment method for improving damage resistance of aluminum-lithium alloy sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0017] Using the Al-Cu-Li-X aluminum-lithium alloy heat treatment method involved in the present invention, the cold-rolled sheets of three specifications of 2.0, 1.5mm and 1.2mm were respectively annealed + solid solution + aging treatment, and the plates were treated to T3 State, the cold rolling deformation of the plate before solid solution is 35% and 60%, respectively, the tensile properties and da / dN properties of the plate are measured, and compared with the T3 state properties of the traditional solution process, the specific properties are shown in Table 1 shown.

[0018] Table 1 The corresponding properties of 24 embodiments of the present invention and plates with different thicknesses

[0019]

[0020]

[0021] Based on the data in Table 1, it fully demonstrates that the heat treatment method for aluminum-lithium alloy sheet proposed by the present invention can improve the damage resistance of the alloy under the premise that other properties remain unchange...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a heat treatment method for improving the damage resistance of an Al-Cu-Li-X series aluminum-lithium alloy thin plate. The alloy components and weight percentages applicable to the method are: Cu 2.0-5.0%, Li 0.8-2.5%, microalloy Elements include Mn 0.20-0.60%, Zn 0.20-0.80%, Zr 0.04-0.20%, Mg 0.20%-0.80%, Ag 0.1-0.7%, any 1-5 kinds, Si≤0.10%, Fe≤0.10%, Ti≤0.12%, other impurities individually≤0.05%, the total ≤0.15%, and the balance is Al. The sheet cold-rolled to the final thickness is subjected to a short-term annealing treatment at a certain temperature, and then solution quenching and subsequent Aging treatment to the desired state. Adopting this process can adjust the structure and performance characteristics of the plate, so that the damage resistance of the plate can be greatly improved under the premise of other properties remaining unchanged.

Description

technical field [0001] The invention belongs to the heat treatment technology of aluminum alloy sheets, and relates to a novel heat treatment method for improving the damage resistance of Al-Cu-Li-X series aluminum-lithium alloy sheets. Background technique [0002] Al-Cu-Li-X series aluminum-lithium alloy has high specific strength, high specific stiffness, high toughness and excellent damage resistance, and its thin plate is suitable for manufacturing aircraft skins. Due to the high requirements on the width, size uniformity, surface quality and damage resistance of the panels required for the fuselage skin, at present, limited by the domestic equipment and technical level, in the Al-Cu-Li-X series wide How to achieve coordinated control of size uniformity and damage resistance in the preparation process of thin plates has become a difficult problem. A small amount of cold deformation before solid solution can ensure damage resistance but will affect the dimensional unifo...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/057C22C21/18
Inventor 李国爱陆政冯朝辉何维维郝敏
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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