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Deformation heat treatment process to improve the performance of high-strength heat-resistant deformed magnesium alloy cylindrical parts

A technology of deformation heat treatment and heat resistance deformation, which is applied in the field of deformation heat treatment technology to improve the performance of high-strength heat-resistant deformed magnesium alloy cylindrical parts, can solve the problems of uneven structure and performance of the alloy, low material utilization rate, etc., and achieve uniform structure and performance. Effect of improving mechanical properties and improving performance

Active Publication Date: 2019-05-24
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem of the present invention is: to overcome the deficiencies of the prior art, and to propose a deformation heat treatment process for improving the performance of high-strength heat-resistant deformed magnesium alloy cylindrical parts, which can overcome the uneven microstructure and performance of the alloy obtained by the existing forming process , there is anisotropy, and the utilization rate of materials is low

Method used

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  • Deformation heat treatment process to improve the performance of high-strength heat-resistant deformed magnesium alloy cylindrical parts
  • Deformation heat treatment process to improve the performance of high-strength heat-resistant deformed magnesium alloy cylindrical parts
  • Deformation heat treatment process to improve the performance of high-strength heat-resistant deformed magnesium alloy cylindrical parts

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Embodiment 1

[0034] Such as figure 1 As shown, a deformation heat treatment process for improving the performance of WE71M high-strength heat-resistant deformed magnesium alloy cylindrical parts, the process steps include:

[0035] (1) Scrub the surface of WE71M cylindrical parts with alcohol to remove surface oil stains, ensure that no stains, oil stains, and metal chips are allowed on the surface, and install them on the spinning mandrel tooling after cleaning, such as Figure 7a and Figure 7b shown;

[0036] (2) Heat the WE71M cylindrical piece. When the temperature reaches 480°C, according to the set spinning parameters, the mandrel rotates at 75r / min during the spinning process; Deformation by pass, plastic surgery by pass, the total deformation is not less than 35%;

[0037] (3) After the WE71M cylindrical part after spinning is demoulded and cooled to room temperature, install the WE71M cylindrical part on the heat treatment tooling, such as figure 2 As shown, and its installa...

Embodiment 2

[0043] A deformation heat treatment process for improving the performance of WE71M high-strength heat-resistant deformed magnesium alloy cylindrical parts, the process steps include:

[0044] (1) Scrub the surface of WE71M cylindrical parts with alcohol to remove surface oil stains, ensure that no stains, oil stains, and metal chips are allowed on the surface, and install them on the spinning mandrel tooling after cleaning;

[0045] (2) Heat the WE71M cylindrical part. When the temperature is heated to 500°C, according to the set spinning parameters, the mandrel rotates at 75r / min during the spinning process; Deformation by pass, plastic surgery by pass, the total deformation is not less than 35%;

[0046] (3) After the spinning WE71M cylindrical part is demoulded and cooled to room temperature, aging heat treatment is performed on the WE71M cylindrical part. The aging temperature is 225°C and the aging time is 24h. After the aging treatment, it is air-cooled and cooled to roo...

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Abstract

The invention relates to a thermo-mechanical treatment process for improving the performance of a high-strength heat-resistant wrought magnesium alloy barrel-shaped part, and belongs to the field of nonferrous materials and processes. The technology of aging heat treatment after spinning deformation is adopted, continuous and pointwise plastic deformation is generated through spinning point-contact deformation at high temperature, even deformation of the barrel-shaped part is realized, the deformation degree is improved, the structure performance is uniform, and the isotropy of the performanceof the wrought magnesium alloy barrel-shaped part is realized. The process is divided into two phases. In the first phase, the deformation degree of the barrel-shaped part is improved through high-temperature spinning deformation, the structure performance is uniform, the grain refinement strengthening effect of WE71M wrought magnesium alloy is played, and the mechanical performance of the WE71Mbarrel-shaped part is improved. In the second phase, aging heat treatment is conducted on the barrel-shaped part after being subjected to spinning deformation, separation of a discontinuously separated dispersion strengthening phase at the grain boundary is facilitated, and the performance of the material is improved. The performance of the barrel-shaped part is further improved after high-temperature deformation heat treatment, and the structure is more uniform.

Description

technical field [0001] The invention relates to a deformation heat treatment process for the performance of a high-strength heat-resistant deformed magnesium alloy cylindrical part, which belongs to the field of non-ferrous metal materials and processes, and in particular to a deformation heat treatment process for improving the performance of a WE71M high-strength heat-resistant deformed magnesium alloy cylindrical part. The WE71M high-strength heat-resistant deformation magnesium alloy mentioned above refers to the Mg-Y-Nd series high-strength heat-resistant deformation magnesium alloy, and the high strength refers to the mechanical properties and the tensile strength is not less than 300MPa. Heat resistance means that the tensile strength of the mechanical properties at 150°C is not less than 280 MPa, and the improvement of the performance of the WE71M high-strength heat-resistant deformed magnesium alloy cylindrical part refers to the improvement of the mechanical propertie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/06
CPCC22F1/06
Inventor 阴中炜张景琪姚草根杜志惠
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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