Fast aging response type Al-Mg-Si-Cu-Zn series alloy and preparation method thereof

An al-mg-si-cu-zn, aging technology, applied in the field of aluminum alloy, can solve the problem of reducing the hardening ability of alloy baking paint
CN103789583AInactive Publication Date: 2014-05-14UNIV OF SCI & TECH BEIJING
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
UNIV OF SCI & TECH BEIJING
Publication Date
2014-05-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a novel Al-Mg-Si-Cu-Zn series alloy with fast aging response and a preparation method thereof. According to the invention, the novel Al-Mg-Si-Cu-Zn series alloy shows excellent fast aging response characteristic in an aging process by sufficiently utilizing the synergetic precipitation effect and synergetic strengthening effect of the main strengthening phases Mg2Si, MgZn2 and transitional phase of an Al-Mg-Si series alloy and an Al-Zn-Mg-Cu series alloy; the natural aging deterioration effect of a common Al-Mg-Si-Cu series alloy is certainly inhibited due to the simultaneous addition of Mg, Si, Cu and Zn elements and the addition of element Zn especially, the novel Al-Mg-Si-Cu-Zn series alloy has low strength and high room temperature stability after being subjected to preaging treatment at a certain temperature, which is favorable to the subsequent stamping forming of an alloy plate; a preaging-state alloy is greatly enhanced in strength after being subjected to high-temperature aging treatment and achieves the highest strength increment approaching to 150 MPa far higher than that of the traditional AA6016 and AA6111 alloys through short-term artificial aging at 185 DEG C for 20 minutes; the fast aging response characteristic is not only suitable for the preparation of an automobile outside plate, but also suitable for the related field with a special requirement on the aging precipitation speed of the alloy plate.
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Description

technical field

[0001] The invention belongs to the technical field of aluminum alloys, and relates to a novel Al-Mg-Si-Cu-Zn alloy that can be applied industrially and a preparation method thereof, especially developed for the aluminum alloy with fast aging response characteristics urgently needed in the automotive field, and can be used Guarantee the dual requirements of high formability and high paint hardening performance for aluminum alloys for lightweight automotive body panels. Background technique

[0002] In recent years, with the continuous acceleration of the lightweight process of automobiles, the development and related research of aluminum alloy sheets for automobiles have also made great progress, especially because aluminum alloys have the advantages of low density, high strength, corrosion resistance and high formability. , and its application in the lightweight process of automobiles has also increased rapidly. Typical aluminum alloys for automobile body p...

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
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