58 / 2021-06-30 09:27:34

Preparation of in-situ CaB6 nanoparticles and their reinforcement effect on Al-Cu-Mn alloy

aluminum matrix composite,ceramic nanoparticle,Microstructure,property

Preparation of in-situ CaB₆ nanoparticles and their reinforcement effect on Al-Cu-Mn alloy

Jinhua Ding¹, Chunxiang Cui² and Jing Ding<sup>3

1</sup> School of Mechanical Engineering, Shandong University of Technology, Zibo, 255000, China

² Key Lab. For New Type of Functional Material in Hebei Province, School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, PR China

³ School of Materials Science and Engineering, Tianjin University, Tianjin 300130, PR China

Corresponding author: dingjinhua123456@126.com

Keywords: aluminum matrix composite, ceramic nanoparticle, microstructure, property

Abstract (300 words limit)

Ceramic nanoparticles reinforced aluminum matrix composite is a kind of promising materials in industrial production. It has been widely used in fields of aviation and space, military, automotive and transportation due to its high specific strength, high specific modulus, good thermal and electrical conductivity, excellent high temperature performance and good wear resistance. However, its preparation is difficult due to the poor wettability between Al melt and ceramic particles and severe particle aggregation tendency. Poor wettability can weaken the interface bonding between the reinforced particles and the matrix, and particle aggregation will weaken the strengthening effect of the reinforced particles. In order to solve the above problems in the process of nanoparticles reinforced aluminum matrix composite preparation, we proposed a combination of in-situ autogeneration method, melt spinning technology and ultrasonic vibration treatment to prepare in-situ nano-particle reinforced aluminum matrix composites with uniform particle dispersion and good interface bonding. In this paper, the in-situ CaB₆/Al-5Cu-0.3Mn nanocomposites were successfully prepared with the aid of melt spinning technology and ultrasonic vibration. Using Al-Ca and Al-B master alloys as raw materials, in-situ CaB₆ reinforced particles were prepared by melt reaction menthod. The nanocrystallization of in-situ CaB₆ reinforced particles was realized by the extremely fast cooling rate during melt spinning. The uniform distribution of particles in the matrix was realized through the stirring action during the ultrasonic vibration treatment. Optical microscopy (OM), scanning electron microscope (SEM) and transmission electron microscopy (TEM) were used to observe the microstructures of nano-CaB₆/Al ribbons and CaB₆/Al-5Cu-0.3Mn nanocomposite. The room and high temperature properties of Al-5Cu-0.3Mn alloy strengthened by the CaB₆ particles was studied. The strengthening mechanisms were investigated in detail.



  Biography/个人简介 (150 words limit)



丁金花（1990年05月），2020年9月至今就职于山东理工大学机械工程学院，职称讲师。主要研究方向为金属基复合材料，研究内容主要包括纳米颗粒增强金属基复合材料的制备、微观组织检测分析和力学性能分析；原位铝基复合材料孕育剂的开发、制备、微观组织和细化效果分析。

电话：15222705275，邮箱：dingjinhua123456@126.com

Preparation of in-situ CaB₆ nanoparticles and their reinforcement effect on Al-Cu-Mn alloy

Jinhua Ding¹, Chunxiang Cui² and Jing Ding<sup>3

1</sup> School of Mechanical Engineering, Shandong University of Technology, Zibo, 255000, China

² Key Lab. For New Type of Functional Material in Hebei Province, School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, PR China

³ School of Materials Science and Engineering, Tianjin University, Tianjin 300130, PR China

Corresponding author: dingjinhua123456@126.com

Keywords: aluminum matrix composite, ceramic nanoparticle, microstructure, property

Abstract (300 words limit)

Ceramic nanoparticles reinforced aluminum matrix composite is a kind of promising materials in industrial production. It has been widely used in fields of aviation and space, military, automotive and transportation due to its high specific strength, high specific modulus, good thermal and electrical conductivity, excellent high temperature performance and good wear resistance. However, its preparation is difficult due to the poor wettability between Al melt and ceramic particles and severe particle aggregation tendency. Poor wettability can weaken the interface bonding between the reinforced particles and the matrix, and particle aggregation will weaken the strengthening effect of the reinforced particles. In order to solve the above problems in the process of nanoparticles reinforced aluminum matrix composite preparation, we proposed a combination of in-situ autogeneration method, melt spinning technology and ultrasonic vibration treatment to prepare in-situ nano-particle reinforced aluminum matrix composites with uniform particle dispersion and good interface bonding. In this paper, the in-situ CaB₆/Al-5Cu-0.3Mn nanocomposites were successfully prepared with the aid of melt spinning technology and ultrasonic vibration. Using Al-Ca and Al-B master alloys as raw materials, in-situ CaB₆ reinforced particles were prepared by melt reaction menthod. The nanocrystallization of in-situ CaB₆ reinforced particles was realized by the extremely fast cooling rate during melt spinning. The uniform distribution of particles in the matrix was realized through the stirring action during the ultrasonic vibration treatment. Optical microscopy (OM), scanning electron microscope (SEM) and transmission electron microscopy (TEM) were used to observe the microstructures of nano-CaB₆/Al ribbons and CaB₆/Al-5Cu-0.3Mn nanocomposite. The room and high temperature properties of Al-5Cu-0.3Mn alloy strengthened by the CaB₆ particles was studied. The strengthening mechanisms were investigated in detail.



  Biography/个人简介 (150 words limit)



丁金花（1990年05月），2020年9月至今就职于山东理工大学机械工程学院，职称讲师。主要研究方向为金属基复合材料，研究内容主要包括纳米颗粒增强金属基复合材料的制备、微观组织检测分析和力学性能分析；原位铝基复合材料孕育剂的开发、制备、微观组织和细化效果分析。

电话：15222705275，邮箱：dingjinhua123456@126.com