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.[Feng Yicheng,Zhang Fusheng,Chen Yanhong,Zhao Sicong,Wang Liping,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.]
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
投稿时间:2019-12-16  修订日期:2020-01-10
中文关键词:  初始组织  Mg-6Al-2Ca-2Sm合金  热挤压  力学性能
基金项目:国家自然科学基金(51804090);黑龙江省科学基金(E2018045)
中文摘要:
      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。
Effect of initial microstructure on microstructure and mechanical properties of hot extruded Mg-6Al-2Ca-2Sm alloy
英文关键词:initial microstructure  Mg-6Al-2Ca-2Sm alloy  hot extrusion  mechanical properties
英文摘要:
      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.
作者单位E-mail
冯义成 哈尔滨理工大学材料科学与工程学院 fyc7806067@163.com 
张福盛 哈尔滨理工大学材料科学与工程学院  
陈彦宏 哈尔滨理工大学材料科学与工程学院  
赵思聪 哈尔滨理工大学材料科学与工程学院  
王丽萍 哈尔滨理工大学材料科学与工程学院  
郭二军 哈尔滨理工大学材料科学与工程学院  
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