| 轧制温度对大应变轧制Al-4.5Cu-1.5Mg-0.1Sc合金组织与性能的影响 |
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| 引用本文： | 杨春洋,孙有平,何江美,翟传田,李旺珍.轧制温度对大应变轧制Al-4.5Cu-1.5Mg-0.1Sc合金组织与性能的影响[J].矿冶工程,2022,42(2):132-135. |
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| 作者姓名： | 杨春洋 孙有平 何江美 翟传田 李旺珍 |
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| 作者单位： | 1.广西科技大学 机械与汽车工程学院,广西 柳州 545006;
2.广西土方机械协同创新中心,广西 柳州545006;
3.广西汽车零部件与整车技术重点实验室,广西 柳州 545006 |
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| 基金项目： | 国家自然科学基金(51864006)；;柳州市科技计划项目(2021CBA0102)；;广西研究生教育创新计划项目(YCSW2021323)； |
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| 摘 要： | 在不同温度下对Al-4.5Cu-1.5Mg-0.1Sc进行大应变轧制,采用光学显微镜、扫描电镜、能谱分析及拉伸试验等研究轧制温度对合金显微组织与力学性能的影响。结果表明,热轧温度400 ℃时,Al-4.5Cu-1.5Mg-0.1Sc铝合金再结晶充分,晶粒尺寸细小均匀,结合热处理可有效改善基体中第二相分布不均现象; 400 ℃热轧并T6态处理后合金综合力学性能较好,抗拉强度为455 MPa,伸长率为21.8%; 合金断裂形式为韧性断裂,断口上分布着大量细小的韧窝。
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| 关 键 词： | 铝合金 大应变轧制 Al-4.5Cu-1.5Mg-0.1Sc 轧制温度 显微组织 力学性能 |
| 收稿时间： | 2021-10-21 |
Effect of Temperature on Microstructure and Properties of Large-Strain Rolled Al-4.5Cu-1.5Mg-0.1Sc Alloy |
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| YANG Chun-yang,SUN You-ping,HE Jiang-mei,ZHAI Chuan-tian,LI Wang-zhen.Effect of Temperature on Microstructure and Properties of Large-Strain Rolled Al-4.5Cu-1.5Mg-0.1Sc Alloy[J].Mining and Metallurgical Engineering,2022,42(2):132-135. |
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| Authors: | YANG Chun-yang SUN You-ping HE Jiang-mei ZHAI Chuan-tian LI Wang-zhen |
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| Affiliation: | 1.School of Mechanical and Automobile Engineering, Guangxi University of Science and Technology, Liuzhou 545006, Guangxi, China;
2.Guangxi Collaborative Innovation Center of Earthwork Machinery, Liuzhou 545006, Guangxi, China;
3.Guangxi Key Laboratory of Automobile Components and Vehicle Technology, Liuzhou 545006, Guangxi, China |
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| Abstract: | Al-4.5Cu-1.5Mg-0.1Sc alloy was subjected to large strain rolling at different temperatures, and the effect of rolling temperature on the microstructure and mechanical properties of the alloy was studied by using optical microscope, scanning electron microscope, energy spectrum analysis and tensile test. The results show that after hot rolling at 400 ℃, Al-4.5Cu-1.5Mg-0.1Sc aluminum alloy is fully recrystallized with fine and uniform grain. A combination of heat treatment can effectively improve the uneven distribution of the second phase in the matrix. After hot rolling at 400 ℃ and T6 heat treatment, the alloy exhibits good comprehensive mechanical properties, with the tensile strength of 455 MPa and the percentage elongation of 21.8%. The alloy is found to follow a ductile fracture, with a large number of microdimples distributed on the fracture surface. |
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| Keywords: | aluminum alloy large strain rolling Al-4 5Cu-1 5Mg-0 1Sc rolling temperature microstructure mechanical properties |
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