刘飞,白朴存,侯小虎,崔晓明,郭瑞星.Al9Fe0.7Ni1.3相对喷射沉积Al-Zn-Mg-Cu-Ni合金组织和性能的影响[J].稀有金属材料与工程,2019,48(2):440~445.[Fei Liu,Pucun Bai,Xiaohu Hou,Xiaoming Cui,Ruixing Guo.Effect of Al9Fe0.7Ni1.3 Phase on the Microstructure and Mechanical Properties of Al-Zn-Mg-Cu-Ni Alloys Prepared by Spray Deposition[J].Rare Metal Materials and Engineering,2019,48(2):440~445.]
Al9Fe0.7Ni1.3相对喷射沉积Al-Zn-Mg-Cu-Ni合金组织和性能的影响
投稿时间:2017-07-26  修订日期:2017-09-06
中文关键词:  Al9Fe0.7Ni1.3  HRTEM  Al-Zn-Mg-Cu合金  力学性能
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目),国家教育部博士点基金
中文摘要:
      本文利用喷射沉积技术合成含Ni的Al-Zn-Mg-Cu合金,合金中的Ni元素以亚微米球状Al9Fe0.7Ni1.3化合物的形式存在。利用扫描电镜和电子背散射衍射、透射电镜以及拉伸测试研究了Al9Fe0.7Ni1.3颗粒对合金固溶处理后组织和性能的影响。结果发现:Al9Fe0.7Ni1.3颗粒主要在晶界附近分布,说明该颗粒在固溶过程中具有有力的抑制再结晶作用。固溶处理后,合金的拉伸强度为603 MPa,断裂延伸率为11.79%,主要断裂方式为穿晶延性断裂。实验结果表明亚微米球状Al9Fe0.7Ni1.3化合物对合金性能有重要影响,可以产生细晶强化和Orowan强化,是合金发生穿晶延性断裂的主要原因。
Effect of Al9Fe0.7Ni1.3 Phase on the Microstructure and Mechanical Properties of Al-Zn-Mg-Cu-Ni Alloys Prepared by Spray Deposition
英文关键词:Al9Fe0.7Ni1.3  HRTEM  Al-Zn-Mg-Cu alloy  Mechanical properties  
英文摘要:
      In this study, an Al-Zn-Mg-Cu alloy with Ni added as alloying element was synthesized via spray deposition. The element was present in the alloy in the form of spherical submicrometer Al9Fe0.7Ni1.3 compound particles. The effects of the particles on the microstructure and mechanical properties of the alloy after a solution treatment were investigated by scanning electron microscopy (SEM) in conjunction with electron backscatter diffraction (EBSD), transmission electron microscopy (TEM) and tensile tests. We found that the Al9Fe0.7Ni1.3 compound particles were mainly present near the grain boundaries, revealing a powerful recrystallization inhibition effect during the solution treatment. After the solid solution treatment, the alloy exhibited an ultimate tensile strength of 603 MPa and an elongation at break of 11.79%, and transgranular ductile fracture was identified as the main fracture mechanism. The results show that the presence of the spherical submicrometer Al9Fe0.7Ni1.3 compound particles played a key role on the mechanical properties of the alloy, leading to grain refinement strengthening and Orowan strengthening, and was the main reason for the occurrence of transgranular ductile fracture.
作者单位E-mail
刘飞 内蒙古工业大学材料科学与工程学院 ngdliufei@163.com 
白朴存 内蒙古工业大学材料科学与工程学院  
侯小虎 内蒙古工业大学材料科学与工程学院  
崔晓明 内蒙古工业大学材料科学与工程学院  
郭瑞星 内蒙古工业大学材料科学与工程学院  
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