| 基于CCD的多级时效工艺对6061铝合金性能的影响 |
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| 引用本文： | 段伟,简思聪,伍超群,肖永通,卢凤池,李雨,胡子建,明亮.基于CCD的多级时效工艺对6061铝合金性能的影响[J].金属热处理,2021,46(10):96-100. |
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| 作者姓名： | 段伟 简思聪 伍超群 肖永通 卢凤池 李雨 胡子建 明亮 |
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| 作者单位： | 1.广东省科学院 工业分析检测中心, 广东 广州 510650; 2.广东工业大学 机电工程学院, 广东 广州 510006 |
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| 基金项目： | 国家自然基金青年基金(52001074);2020年省属科研机构改革创新领域稳定支持项目;面向汽车轻量化的高性能铝/镁合金及部件制造技术开发与产业化(1920001000412) |
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| 摘 要： | 采用中心组合设计(Central composite design, CCD)试验方法对选定温度下的6061铝合金固溶+双级时效处理工艺中的时间参数进行系统试验设计,结合力学性能测试结果得出时间参数与抗拉强度的可靠数学模型(r2=0.9078)。通过模型计算及方差分析结果可知二级时效时间对抗拉强度的影响十分显著且与抗拉强度呈负相关关系。据此得出最佳热处理工艺为550 ℃×108 min固溶+180 ℃×246 min峰时效+220 ℃×3 min二级时效,该工艺下6061铝合金的抗拉强度值为345 MPa,断后伸长率为13.5%。
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| 关 键 词： | 6061铝合金 热处理 响应曲面 抗拉强度 |
| 收稿时间： | 2021-05-03 |
Effect of multi-stage aging on properties of 6061 aluminum alloy via CCD method |
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| Duan Wei,Jian Sicong,Wu Chaoqun,Xiao Yongtong,Lu Fengchi,Li Yu,Hu Zijian,Ming Liang.Effect of multi-stage aging on properties of 6061 aluminum alloy via CCD method[J].Heat Treatment of Metals,2021,46(10):96-100. |
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| Authors: | Duan Wei Jian Sicong Wu Chaoqun Xiao Yongtong Lu Fengchi Li Yu Hu Zijian Ming Liang |
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| Affiliation: | 1. Center for Industrial Analysis and Testing, Guangdong Academy of Sciences, Guangzhou Guangdong 510650, China; 2. School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou Guangdong 510006, China |
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| Abstract: | Central composite design (CCD) method was used to design the time parameters of solution and two stage aging processes for 6061 aluminum alloy, and a reliable mathematical model of the time parameters and tensile strength (r2=0.9078) was obtained in combination with the mechanical performance test results. Through calculation and analysis of variance, it can be seen that the two-step aging time has a significant effect on tensile strength and is negatively correlated with tensile strength. Based on this, the best heat treatment process consists of solid solution at 550 ℃ for 108 min, peak aging at 180 ℃ for 246 min and then two-step aging at 220 ℃ for 3 min, the tensile strength and elongation of the 6061 aluminum alloy under the process is 345 MPa and 13.5%, respectively. |
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| Keywords: | 6061 aluminum heat treatment response surface tensile strength |
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