Heat treatment technology of high strength aluminium alloy
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SICHUAN CITY TRACK TRAFFIC MATERIAL
- Publication Date
- 2011-01-26
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
technical field
[0001] The invention relates to a metal heat treatment process, in particular to a heat treatment process of a high-strength aluminum alloy. Background technique
[0002] In recent years, Al-Zn-Mg-Cu high-strength wrought aluminum alloys have been widely used in the fields of aviation, aerospace, weapons and transportation, etc., especially for important structural parts that require high light weight, most of which are wrought aluminum alloys Manufactured and heat treated for high strength and toughness.
[0003] Aging heat treatment can change the type, size, quantity and distribution of precipitates in aluminum alloys, thereby affecting the comprehensive mechanical properties and corrosion resistance of Al-Zn-Mg-Cu aluminum alloys. The characteristics of intragranular precipitates control the strength of the alloy. main factor. Intragranular precipitates are small in size and high in density and are not easily cut by dislocations, which is conducive to i...