Al-Cu alloy wire for additive manufacturing and preparation method and application of Al-Cu alloy wire

An additive manufacturing and alloy wire technology, applied in the field of additive manufacturing, can solve the problems of easy occurrence of micro-cracks and low mechanical properties, and achieve the effect of high strength and high plasticity

Pending Publication Date: 2021-03-19
CAPITAL AEROSPACE MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the above existing problems in the prior art, and provides a special wire material for Al-Cu alloy fused wire additive manufacturing, thereby solving the problem that the fused wire additively formed components that use commercial Al-Cu alloy welding wire as raw materials are prone to micro Crack defects, low mechanical properties
Compared with 2219 aluminum alloy, microalloying elements cadmium, tin or indium are added to promote the precipitation of strengthening phases during heat treatment of additive components and solve the problem of low mechanical properties

Method used

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  • Al-Cu alloy wire for additive manufacturing and preparation method and application of Al-Cu alloy wire
  • Al-Cu alloy wire for additive manufacturing and preparation method and application of Al-Cu alloy wire
  • Al-Cu alloy wire for additive manufacturing and preparation method and application of Al-Cu alloy wire

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Embodiment 1

[0044] In terms of mass percentage, its chemical composition is: Cu: 6.0%, Fe: 0.13%, Si: 0.04%, Mn: 0.3%, Mg: 0.02%, Zn: 0.01%, Ti: 0.1%, Zr: 0.15%, V: 0.1%, Cd: 0.1%, Sc: 0.15%.

[0045] A method for preparing an Al-Cu alloy for additive manufacturing, the specific steps comprising:

[0046] 1) Select high-purity aluminum ingots and intermediate alloys such as Cu, Mn, V, and Zr for batching according to the composition ratio. When batching, Fe / Si is controlled at 3.25, and the total content of Mn, Ti, and V is controlled at 0.5%.

[0047] 2) Vacuum melting, and argon protection, argon chlorine gas and flux compound refining,

[0048] The specific steps of refining include:

[0049] The first step: add high-purity aluminum ingots, AlCu50, AlMn10, AlV3 and AlZr3 and other intermediate alloys in sequence, heat and melt, stir, and control the melt temperature at 760-780 °C;

[0050] Step 2: Add Cd, Sn or In and Sc, heat to melt, stir, and control the melt temperature at 740-7...

Embodiment 2

[0061] In terms of mass percentage, its chemical composition is: Cu: 6.1%, Fe: 0.12%, Si: 0.04%, Mn: 0.31%, Mg: 0.02%, Zn: 0.01%, Ti: 0.11%, Zr: 0.12%, V: 0.1%, Sc: 0.15%.

[0062] A method for preparing an Al-Cu alloy for additive manufacturing, the specific steps comprising:

[0063] 1) Select high-purity aluminum ingots and intermediate alloys such as Cu, Mn, V, and Zr for batching according to the composition ratio. When batching, Fe / Si is controlled at 3.0, and the total content of Mn, Ti, and V is controlled at 0.52%.

[0064] 2) Vacuum melting, combined refining with argon protection, argon chlorine gas and flux. The specific steps include: first step: adding high-purity aluminum ingots, intermediate alloys such as AlCu50, AlMn10, AlV3 and AlZr3 in sequence, heating and melting, stirring, and controlling the melt temperature at 760-780°C. Step 2: Add Cd, Sn or In and Sc, heat to melt, stir, and control the melt temperature at 740-760°C. The third step: Ti addition, A...

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Abstract

The invention discloses an Al-Cu alloy wire for additive manufacturing. The Al-Cu alloy wire for additive manufacturing comprises the following chemical components, by mass percentage, 5.5-6.5% of Cu,less than or equal to 0.15% of Fe, less than or equal to 0.06% of Si, 0.26-0.42% of Mn, less than or equal to 0.02% of Mg, less than or equal to 0.10% of Zn, 0.1-0.2% of Ti, 0.10-0.25% of Zr, 0.05-0.15% of V, 0.05-0.25% of Cd, Sn or In, 0.10-0.25% of Sc, less than or equal to 0.0003% of Be, less than or equal to 0.05% of other single elements, less than or equal to 0.15% of total impurities and the balance Al. The invention further provides a preparation method of an alloy of the alloy wire and application of the alloy wire. The problems that a fuse wire additive forming component taking a commercial Al-Cu alloy welding wire as a raw material is prone to micro-crack defects and low in mechanical property are solved.

Description

Technical field: [0001] The invention relates to the technical field of additive manufacturing, in particular to an Al-Cu alloy wire used for additive manufacturing of fuses, a preparation method and application thereof. Background technique: [0002] Aluminum alloy shell segments, brackets, and frame beams are a type of key load-bearing structures in aerospace equipment. In order to meet the requirements of lightweight equipment and high load-bearing efficiency, the design method of structural and functional integration is widely used, and the structure of parts is becoming more and more complex. , The requirements for mechanical properties are getting higher and higher, and Al-Cu alloys are generally used. Casting Al-Cu alloy ZL205A is used. Due to the large wall thickness difference, defects such as shrinkage cavities, shrinkage porosity, cracks, and segregation are prone to occur, and the casting yield is low; using forged Al-Cu alloy 2219, the material utilization rate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/28B23K35/40B33Y70/00C22C1/02C22C1/03C22C21/12C22C21/14C22C21/16C22C21/18C22F1/057
CPCB23K35/288B23K35/40C22C21/12C22C21/14C22C21/16C22C21/18C22C1/026C22C1/03C22F1/057B33Y70/00
Inventor 李权王福德罗志伟冯晨张睿泽孙宏波马丽翠
Owner CAPITAL AEROSPACE MACHINERY
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