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Plastic forming method for high-strength wear-resistant aluminum alloy plate

A technology for plastic forming of aluminum alloy plates, applied in the field of local modification of aluminum alloy plates and large surface plastic forming, and plastic forming of high-strength wear-resistant aluminum alloy plates, which can solve the problems of low local strength and poor wear resistance, etc. Achieve the effect of uniform distribution of the second phase, improve wear resistance, and no internal defects in the distribution of the second phase

Active Publication Date: 2019-09-27
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the defects of low local strength and poor wear resistance in the prior art, the present invention provides a plastic forming method of high-strength wear-resistant aluminum alloy, which refines the structure through friction stir processing, combined with surface laser shock forming The process makes the surface structure of the friction stir processing zone form micro-nano crystals, and adjusts the surface work hardening level on the basis of grain refinement to achieve better strength and wear-resistant structure characteristics

Method used

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  • Plastic forming method for high-strength wear-resistant aluminum alloy plate
  • Plastic forming method for high-strength wear-resistant aluminum alloy plate
  • Plastic forming method for high-strength wear-resistant aluminum alloy plate

Examples

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Embodiment 1

[0029] (1) Homogenization treatment: saw the as-cast 2A14 aluminum alloy plate to be processed according to the equipment size requirements to 150mm×300mm×5mm, put the sawed plate in a furnace at room temperature, and homogenize it at 490°C for 10 hours, and the heat preservation is over Then cool down to 160±2°C with the furnace, and then take it out of the heat treatment furnace and air cool to room temperature;

[0030] (2) Surface treatment: After homogenization treatment, the surface of the 2A14 aluminum alloy plate to be processed is polished with a grinder, washed with a water-based detergent and rinsed with water, and then dried with a hair dryer for later use.

[0031] (3) Friction stir processing: clamp the surface-treated 2A14 aluminum alloy plate on the friction stir welding equipment for single-pass friction stir processing, and use 24±2°C flowing water to cool while stirring. The friction stir processing parameters The rotation speed is 1000rpm, the feed rate is ...

Embodiment 2

[0035] (1) Homogenization treatment: Cut the as-cast 2A14 aluminum alloy plate to be processed into 150mm×300mm×5mm according to the equipment size requirements, put the sawn plate in a furnace at room temperature, and homogenize it at 460°C for 14 hours, and the heat preservation is over Then cool down to 160±2°C with the furnace, and then take it out of the heat treatment furnace and air cool to room temperature;

[0036] (2) Surface treatment: After homogenization treatment, the surface of the 2A14 aluminum alloy plate to be processed is polished with a grinder, washed with a water-based detergent and rinsed with water, and then dried with a hair dryer for later use.

[0037] (3) Friction stir processing: clamp the surface-treated 2A14 aluminum alloy plate on the friction stir welding equipment for single-pass friction stir processing, and use 24±2°C flowing water to cool while stirring. The friction stir processing parameters The rotation speed is 800rpm, the feed speed is...

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Abstract

The invention belongs to the technical field of metal processing, in particular to a plastic forming method for a high-strength wear-resistant aluminum alloy plate. The method comprises the following steps: (1) homogenization treatment: carrying out homogenization treatment on a to-be-processed as cast condition aluminum alloy plate; (2) surface treatment: polishing and physically cleaning the surface of the homogenized aluminum alloy plate; (3) stirring friction processing: carrying out single pass stirring friction processing on the surface treated aluminum alloy plate and cooling the same instantaneously in a forced manner; (4) machining treatment: polishing the machined aluminum alloy plate after stirring friction processing; and (5) laser impacting: carrying out laser impacting treatment on a stirring friction processing region of the machined aluminum alloy plate. Treated by the method, the macroscopic and microscopic structure and pattern of the surface of the aluminum alloy plate can be improved, and the mechanical property and the wear resistance of the aluminum alloy plate are improved greatly. The strength can be improved well, and the wear rate is also reduced greatly while the plasticity is improved.

Description

technical field [0001] The invention belongs to the technical field of metal processing, and in particular relates to a plastic forming method of a high-strength wear-resistant aluminum alloy plate, in particular to a method suitable for local modification and large surface plastic forming of an aluminum alloy plate that can be strengthened by heat treatment. Background technique [0002] Aluminum alloy structural parts have extremely important application value and broad application prospects in many fields such as automobiles, communications, transportation, aerospace, national defense and military industry, metallurgy, etc. The main failure modes of alloys, fatigue and corrosion, start from the surface of the material, so aluminum The local microstructure and properties of the alloy surface directly affect the comprehensive properties of the material. Grain refinement can effectively improve the strength and plasticity of aluminum alloys, thereby improving the comprehensi...

Claims

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Application Information

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IPC IPC(8): C22F1/04C21D9/00C22F3/00B23K20/12
CPCB23K20/1235C21D9/0081C22F1/04C22F3/00
Inventor 王健卢雅琳李兴成周东帅朱福先谢利
Owner JIANGSU UNIV OF TECH
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