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Effect of double ageing on performance and establishment of prediction model for 6005 aluminum alloy

双级时效对6005铝合金性能的影响与预测模型的建立

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Abstract

In the present investigation, the relation of pre-ageing temperature and pre-ageing time to mechanical properties was studied, and a model was established to predict the mechanical properties of AA6005 Al alloy. Compared with the experimental results, the deviation of the proposed model was limited to 8.1%, which showed reasonable accuracy of forecasting. It was found that the performance of AA6005 alloy was better at higher pre-ageing temperature with shorter pre-ageing time than that at T6 temper. The microstructure of the alloy was observed by transmission electron microscopy, and the results showed that high dislocation density and precipitate density existed at 160 °C and 200 °C pre-ageing, which were in good agreement with the model.

摘要

本文对6005挤压铝合金进行双级时效热处理, 研究6005铝合金在不同时效制度下的组织演变规律和力学性能, 建立了预时效制度对6005铝合金力学性能的预测模型. 研究结果表明, 在较高的预时效温度和较短的预时效时间状态下, 6005铝合金的性能优于T6态. TEM观察结果表明, 在160 °C和200 °C预时效状态下, 合金存在较高的位错密度和析出相密度, 与模型预测结果吻合.

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Authors and Affiliations

  1. State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha, 410083, China

    Xu-cheng Wang  (王旭成) & Yuan-chun Huang  (黄元春)

  2. College of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, China

    Xu-cheng Wang  (王旭成), Yuan-chun Huang  (黄元春), Li-hua Zhang  (张立华) & Yun Zhang  (张昀)

  3. Antai New Energy Technology Co., Ltd., Zhangzhou, 363000, China

    Shi-ta Huang  (黄仕塔)

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  1. Xu-cheng Wang  (王旭成)
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Contributions

HUANG Yuan-chun provided the concept and edited the draft of manuscript. WANG Xu-cheng conducted the literature review and wrote the first draft of the manuscript. ZHANG Li-hua, ZHANG Yun and HUANG Shi-ta analyzed the measured data and edited the draft of manuscript. All authors replied to reviewers’ comments and revised the final version.

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Correspondence to Yuan-chun Huang  (黄元春).

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The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Additional information

Foundation item: Projects(51575539, U1837207) supported by the National Natural Science Foundation of China; Project(2020RC2002) supported by the Science and Technology Innovation Program of Hunan Province, China; Project(2021JJ40774) supported by Natural Science Foundation of Hunan Province, China

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Wang, Xc., Huang, Yc., Zhang, Lh. et al. Effect of double ageing on performance and establishment of prediction model for 6005 aluminum alloy. J. Cent. South Univ. 29, 973–985 (2022). https://doi.org/10.1007/s11771-022-4976-y

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