固溶时效工艺对6016铝合金力学性能的影响及多目标优化

发布时间：2018-01-17 19:11

  本文关键词：固溶时效工艺对6016铝合金力学性能的影响及多目标优化　出处：《工程科学学报》2017年01期 　论文类型：期刊论文

  更多相关文章： 铝合金 固溶时效 力学性能 多目标优化

【摘要】：作为6XXX铝合金热处理工艺的一部分,固溶处理与时效处理对6016铝合金的力学性能有显著影响.本文把固溶温度、时间和时效温度、时间作为设计变量,应用中心组合实验设计法设计固溶-时效实验方案,在室温下分别测出试样的屈服强度、伸长率和维氏硬度.第二代非支配排序遗传算法(NSGA-Ⅱ)解决了第一代算法参数选取难、运行效率低等缺点.本文用第二代非支配排序遗传算法把得到的响应面方程作为目标函数进行多目标优化,经过计算后获得非劣解,从中可筛选出使目标函数较好的解与相对的固溶-时效工艺参数.
[Abstract]:As part of the heat treatment process of 6XXX aluminum alloy, the mechanical properties of 6016 aluminum alloy were significantly affected by solid solution treatment and aging treatment. In this paper, the solution temperature, time and aging temperature of 6016 aluminum alloy were studied. Time is taken as the design variable, and the experimental scheme of solid solution-aging is designed by using the central combination experimental design method. The yield strength of the sample is measured at room temperature. Elongation and Vickers hardness. The second generation non-dominant sorting genetic algorithm (NSGA- 鈪，

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