Preparation method of bidirectional perpendicular controlled-rolling trace TiC reinforced Al-Cu-Mg alloy plate

A technology of al-cu-mg and alloy plates, which is applied in the field of preparation of Al-Cu-Mg alloy plates reinforced by micro-amount of TiC in two-way vertical controlled rolling, can solve the problems of poor strengthening effect of ceramic particles, difficulty in particle uniform dispersion and interface bonding, etc. Achieve the effect of grain refinement, density improvement, room temperature tensile strength and yield strength improvement

Active Publication Date: 2019-04-02
JILIN UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The traditional external addition method and endogenous method are not easy to achieve uniform dispersion of particles and good interfacial bonding between the reinforcement and the matrix interface, which usually makes the strengthening effect of ceramic particles poor

Method used

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  • Preparation method of bidirectional perpendicular controlled-rolling trace TiC reinforced Al-Cu-Mg alloy plate
  • Preparation method of bidirectional perpendicular controlled-rolling trace TiC reinforced Al-Cu-Mg alloy plate
  • Preparation method of bidirectional perpendicular controlled-rolling trace TiC reinforced Al-Cu-Mg alloy plate

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preparation example Construction

[0040] The invention provides a method for preparing an Al-Cu-Mg alloy plate reinforced by bidirectional vertical controlled rolling with a small amount of TiC, comprising the following steps:

[0041] Step 1, endogenous method prepares TiC-Al master alloy, specifically as follows:

[0042] (1) Preparation of Al-Ti-C system reaction compact

[0043] (a) Weigh Ti powder, carbon nanotube powder (CNT) and aluminum alloy powder according to the mass ratio of 12:3:35 for subsequent use;

[0044] Wherein, the composition of the aluminum alloy powder is: Cu: 3.9-4.8%; Mg: 0.40-0.8%; Si: 0.6-1.2%; Zn: ≤0.30%; Mn: 0.40-1.0%; Ti: ≤0.15% ; Ni: ≤0.10%; Fe: 0.000~0.700%, the balance being Al.

[0045] (b) After mixing the Ti powder with carbon nanotube powder (CNT) and aluminum alloy powder, put them into a mixing tank with zirconia grinding balls, and each tank contains a mixture of 5 mm, 7 mm, and 11 mm in diameter. , 15mm, 20mm, 22mm ZrO 2 Balls, 10 of each, ZrO 2 The ball mass is ...

Embodiment 1

[0071] This embodiment is an Al-Cu-Mg alloy rolled plate reinforced by two-way vertical controlled rolling TiC, and the amount of endogenous nano-TiC ceramic particles is 0.1wt.%. The specific method is as follows:

[0072] Step 1, endogenous method prepares TiC-Al master alloy, specifically as follows:

[0073] (1) Preparation of Al-Ti-C system reaction compact

[0074] (a) Weigh 24.000g of Ti powder with a particle size of 15 μm, 6.000g of CNT powder (the molar ratio of Ti powder and CNT powder is 1:1) and 70.000g of aluminum alloy powder for later use;

[0075] Among them, the composition of aluminum alloy powder is: Cu: 4.5%; Mg: 0.7%; Si: 0.6%; Zn: 0.3%; Mn: 0.5%; Ti: 0.1%; Ni: 0.1%; The amount is Al.

[0076] (b) Put 100g of mixed powder and zirconia balls into a mixing tank containing ZrO powders with diameters of 5mm, 7mm, 11mm, 15mm, 20mm and 22mm respectively. 2 Balls, 10 each, ZrO 2 The ball mass is 800g in total, the ball-to-material ratio is set to 8:1, the ba...

Embodiment 2

[0104] This embodiment is an Al-Cu-Mg alloy rolled plate reinforced by two-way vertical controlled rolling TiC, and the amount of endogenous nano-TiC ceramic particles is 0.3wt.%. The specific method is as follows:

[0105] Step 1, endogenous method prepares TiC-Al master alloy, specifically as follows:

[0106] (1) Preparation of Al-Ti-C system reaction compact

[0107] (a) Weigh 24.000g of 48μm Ti powder, 6.000g of CNT powder (the molar ratio of Ti powder and CNT powder is 1:1) and 70.000g of Al alloy powder for later use; wherein, the composition of the aluminum alloy powder is: Cu: 4.3%; Mg: 0.6%; Si: 0.6%; Zn: 0.15%; Mn: 0.5%; Ti: 0.1%;

[0108] (b) Put 100g of mixed powder and zirconia balls into a mixing tank, which contains ZrO powders with diameters of 5mm, 7mm, 11mm, 15mm, 20mm, and 22mm, respectively. 2 Balls, 10 each, ZrO 2 The ball mass is 800g in total, the ball-to-material ratio is set to 8:1, the ball milling speed of the mixer is set to 60r / min, and the mix...

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Abstract

The invention discloses a preparation method of a bidirectional perpendicular controlled-rolling trace TiC reinforced Al-Cu-Mg alloy plate. The preparation method comprises the steps that 1, TiC-Al intermediate alloy is prepared through an endogenous preparation method; 2, Al-Cu-Mg alloy melt is prepared; 3, the TiC-Al intermediate alloy is pre-heated and then pressed into the Al-Cu-Mg alloy melt,so that the addition of TiC ceramic particles is 0.1-0.6%, by weight, of the total amount of Al-Cu-Mg alloy melt; 4, a slag remover is added, after stirring and heat preservation are conducted, the melt surface dross is removed; 5, after the melt is cast into a steel mold, TiC reinforced Al-Cu-Mg alloy ingot is obtained; 6, the TiC reinforced Al-Cu-Mg alloy ingot is cut into a cuboid alloy block,and the surface oxidation film of the alloy block is removed by grinding; and 7, after the alloy block is subjected to homogenization treatment, second rolling, solidification, water quenching and the aging treatment are conducted after first rolling and annealing, and the TiC reinforced Al-Cu-Mg alloy plate is obtained.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloys and their processing and preparation, and in particular relates to a method for preparing Al-Cu-Mg alloy sheets reinforced by bidirectional vertical controlled rolling with trace amounts of TiC. Background technique [0002] As a light metal material, aluminum alloy is widely used in the fields of transportation, heat sink and packaging because of its good processing performance, high specific strength and specific stiffness. The 2014 aluminum alloy is an Al-Cu-Mg alloy, which has high strength and high temperature performance due to its high Cu content, and is an important high-strength aluminum-based material. The traditional external addition method and endogenous method are not easy to achieve uniform dispersion of particles and good interfacial bonding between the reinforcement and the matrix interface, which usually makes the strengthening effect of ceramic particles poor. Contents...

Claims

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Application Information

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IPC IPC(8): C22C1/10C22C1/03C22C21/14C22C21/16C22C21/18C22F1/057
CPCC22C1/1036C22C21/14C22C21/16C22C21/18C22F1/057C22C1/1073
Inventor 邱丰刘天舒赵建融姜启川杨宏宇
Owner JILIN UNIV
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