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Reduction in Quenching Residual Stress of 2219 Aluminum Alloy Ring by Cold Bulging Process
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1.School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China;2.Chongqing Technology Inno-vation Center, Northwestern Polytechnical University, Chongqing 400000, China;3.AVIC The First Aircraft Institute, Xi 'an 710089, China

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Chongqing Technology Innovation and Application Development Project

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    Abstract:

    The mechanical properties of 2219 aluminum alloy can be significantly improved by the solution-aging process. Nevertheless, large residual stress is generated during quenching, exerting negative effects on dimensional stability, fatigue strength, stress corrosion, and other properties. A cold bulging process was introduced between quenching and artificial aging to reduce the quenching residual stress of the 2219 aluminum alloy ring. Firstly, the numerical value and distribution law of the residual stress after quenching and cold bulging of the 2219 aluminum alloy ring were analyzed by finite element method (FEM) simulation. Secondly, the residual stress after quenching, artificial aging and solution-cold bulging-artificial aging of the ring was measured by the drilling method. Additionally, the effect of cold bulging process parameters on residual stress value and uniformity was investigated. Experimental results show that quenching residual stress of 2219 aluminum alloy ring is reduced by up to 85% or more.

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[Yang Yanhui, Zhang Zhihong, Chen Xinyi, Wang Xin, Zhang Yangyang, Liu Yijia, Liang Zhengfei. Reduction in Quenching Residual Stress of 2219 Aluminum Alloy Ring by Cold Bulging Process[J]. Rare Metal Materials and Engineering,2023,52(10):3355~3362.]
DOI:10.12442/j. issn.1002-185X.20220955

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History
  • Received:December 08,2022
  • Revised:June 12,2023
  • Adopted:June 29,2023
  • Online: October 26,2023
  • Published: October 24,2023