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采用冷脹形工藝降低2219鋁合金環(huán)的淬火殘余應(yīng)力
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作者單位:

1.西北工業(yè)大學(xué) 材料學(xué)院，陜西 西安 710072;2.西北工業(yè)大學(xué) 重慶科創(chuàng)中心，重慶 400000;3.中國航空工業(yè)集團(tuán)公司航空工業(yè)第一飛機(jī)設(shè)計(jì)研究院，陜西 西安 710089

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重慶市技術(shù)創(chuàng)新與應(yīng)用發(fā)展專項(xiàng)


Reduction in Quenching Residual Stress of 2219 Aluminum Alloy Ring by Cold Bulging Process
Author:
Affiliation:

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

Fund Project:

Chongqing Technology Innovation and Application Development Project

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    摘要:

    通過固溶時(shí)效工藝可以顯著提升2219鋁合金的力學(xué)性能，但在淬火過程中會(huì)產(chǎn)生較大的殘余應(yīng)力，對其尺寸穩(wěn)定性、疲勞強(qiáng)度、應(yīng)力腐蝕等性能產(chǎn)生不利影響。為降低2219鋁合金環(huán)件的淬火殘余應(yīng)力，在淬火和人工時(shí)效之間引入冷脹形工藝。首先，采用有限元法模擬分析了2219鋁合金環(huán)淬火、冷脹形后殘余應(yīng)力的數(shù)值及分布規(guī)律。其次，采用鉆孔法測量了環(huán)在淬火、人工時(shí)效和固溶-冷脹形-人工時(shí)效后的殘余應(yīng)力。研究了冷脹形工藝參數(shù)對殘余應(yīng)力數(shù)值和均勻性的影響。結(jié)果表明，引入冷脹形工藝可以使2219鋁合金環(huán)件淬火殘余應(yīng)力降低85%以上。

    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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楊艷慧,張智宏,陳欣怡,王鑫,張洋洋,劉宜佳,梁正霏.采用冷脹形工藝降低2219鋁合金環(huán)的淬火殘余應(yīng)力[J].稀有金屬材料與工程,2023,52(10):3355~3362.[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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  • 收稿日期:2022-12-08
  • 最后修改日期:2023-06-12
  • 錄用日期:2023-06-29
  • 在線發(fā)布日期: 2023-10-26
  • 出版日期: 2023-10-24