尹德都, 刘艳, 张德清, 祝菲霞. 7050铝合金厚板淬火过程的数值模拟研究[J]. 云南大学学报(自然科学版), 2022, 44(6): 1227-1232. doi: 10.7540/j.ynu.20210254
引用本文: 尹德都, 刘艳, 张德清, 祝菲霞. 7050铝合金厚板淬火过程的数值模拟研究[J]. 云南大学学报(自然科学版), 2022, 44(6): 1227-1232. doi: 10.7540/j.ynu.20210254
YIN De-du, LIU Yan, ZHANG De-qing, ZHU Fei-xia. Numerical simulation study on quenching process of 7050 aluminum alloy thick plate[J]. Journal of Yunnan University: Natural Sciences Edition, 2022, 44(6): 1227-1232. DOI: 10.7540/j.ynu.20210254
Citation: YIN De-du, LIU Yan, ZHANG De-qing, ZHU Fei-xia. Numerical simulation study on quenching process of 7050 aluminum alloy thick plate[J]. Journal of Yunnan University: Natural Sciences Edition, 2022, 44(6): 1227-1232. DOI: 10.7540/j.ynu.20210254

7050铝合金厚板淬火过程的数值模拟研究

Numerical simulation study on quenching process of 7050 aluminum alloy thick plate

  • 摘要: 采用Deform 3D有限元软件对尺寸为630 mm×300 mm×80 mm的7050铝合金厚板淬火过程进行模拟,研究了厚板的温度和残余应力分布情况,同时对比分析了淬火水温对厚板淬火过程的影响. 结果表明,淬火过程中温度分布不均匀,淬火刚开始时,表层温度下降较快,冷却速率约为131.5 ℃/s,内部温度下降缓慢,冷却速率约为33.2 ℃/s,厚板整体能够被固溶. 淬火初期,厚板表层呈现拉应力,内部为压应力;淬火完成后,心部变为拉应力,最大值为131 MPa,表层为压应力. 随着淬火水温的升高,通过淬火敏感区的冷却速率降低,厚板中的残余应力略有减小;采用25~80 ℃水淬均能获得过饱和固溶体,选用80 ℃进行淬火时的残余应力稍有降低.

     

    Abstract: The quenching process of 7050 aluminum alloy thick plate with size of 630 mm×300 mm×80 mm was simulated by using Deform 3D finite element software. The distribution of temperature and residual stress were studied, and the effect of water temperature of quenching on the quenching process was compared and analyzed. The results show that the temperature is not uniformly distributed during the quenching process. At the beginning of quenching, the surface temperature reduces rapidly and the cooling rate is about 131.5 ℃/s, while the internal temperature reduces slowly and the cooling rate is about 33.2 ℃/s. The whole plate can be solid-dissolved. The surface of the thick plate presents tensile stress while the interior is compressively stressed at the beginning of quenching. After quenching, the interior becomes tensely stressed with a maximum tensile stress of 131 MPa while the surface is compressed. With the increase of water temperature of quenching, the cooling rate in the sensitive area of quenching decreases, and the residual stress in the thick plate decreases slightly. Supersaturated solid solution can be obtained by water quenching at 25−80 ℃, and the residual stress is slightly decreased by water quenching at 80 ℃.

     

/

返回文章
返回