| 初始组织对热挤压Mg-6Al-2Ca-2Sm合金显微组织和力学性能的影响 |
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| 引用本文： | 冯义成,张福盛,陈彦宏,赵思聪,王丽萍,郭二军.初始组织对热挤压Mg-6Al-2Ca-2Sm合金显微组织和力学性能的影响[J].稀有金属材料与工程,2020,49(12):4246-4252. |
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| 作者姓名： | 冯义成 张福盛 陈彦宏 赵思聪 王丽萍 郭二军 |
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| 作者单位： | 哈尔滨理工大学材料科学与工程学院,哈尔滨理工大学材料科学与工程学院,哈尔滨理工大学材料科学与工程学院,哈尔滨理工大学材料科学与工程学院,哈尔滨理工大学材料科学与工程学院,哈尔滨理工大学材料科学与工程学院 |
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| 基金项目： | 国家自然科学基金(51804090)；黑龙江省科学基金(E2018045) |
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| 摘 要： | 对铸态Mg-6Al-2Ca-2Sm合金分别进行经固溶和固溶+时效处理获得不同初始组织试样,然后对不同初始组织的试样进行热挤压,研究了不同初始组织对热挤压Mg-6Al-2Ca-2Sm合金显微组织和力学性能的影响。结果表明：铸态合金经热挤压后发生明显的部分再结晶,显微组织得到显著细化；经固溶或固溶+时效处理能够改善合金组织,热挤压后合金显微组织分布更加均匀。初始组织分布能够改善热挤压Mg-6Al-2Ca-2Sm合金室温和高温力学性能,固溶+时效后进行热挤压,Mg-6Al-2Ca-2Sm合金具有最高的抗拉强度和延伸率。
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| 关 键 词： | 初始组织 Mg-6Al-2Ca-2Sm合金 热挤压 力学性能 |
| 收稿时间： | 2019/12/16 0:00:00 |
| 修稿时间： | 2020/1/10 0:00:00 |
Effect of initial microstructure on microstructure and mechanical properties of hot extruded Mg-6Al-2Ca-2Sm alloy |
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| Feng Yicheng,Zhang Fusheng,Chen Yanhong,Zhao Sicong,Wang Liping and Guo Erjun.Effect of initial microstructure on microstructure and mechanical properties of hot extruded Mg-6Al-2Ca-2Sm alloy[J].Rare Metal Materials and Engineering,2020,49(12):4246-4252. |
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| Authors: | Feng Yicheng Zhang Fusheng Chen Yanhong Zhao Sicong Wang Liping and Guo Erjun |
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| Affiliation: | School of Materials Science and Engineering,Harbin University of Science and Technology,School of Materials Science and Engineering,Harbin University of Science and Technology,School of Materials Science and Engineering,Harbin University of Science and Technology,School of Materials Science and Engineering,Harbin University of Science and Technology,School of Materials Science and Engineering,Harbin University of Science and Technology,School of Materials Science and Engineering,Harbin University of Science and Technology |
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| Abstract: | The as-cast Mg-6Al-2Ca-2Sm alloys were heat treated by solid solution and solid solution + aging treatment to obtain samples with different initial microstructure, and then hot extrusion was performed on samples with different initial microstructures. Effect of different initial microstructure on the microstructure and mechanical properties of hot-extruded Mg-6Al-2Ca-2Sm alloy was carried out by analyzing and testing. The results show that the Mg-6Al-2Ca-2Sm alloy undergoes obvious partial recrystallization after hot extrusion, and the grain is significantly refined; solid solution or solid solution + aging treatment can improve the distribution of metallic phases, and the precipitated phase distribution after hot extrusion is more uniform. The heat treatment before extrusion can improve the room temperature and high temperature mechanical properties of the hot extruded Mg-6Al-2Ca-2Sm alloy, and the solid solution + aging hot extruded alloy has the highest tensile strength and elongation. |
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| Keywords: | initial microstructure Mg-6Al-2Ca-2Sm alloy hot extrusion mechanical properties |
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