J. Mater. Sci. Technol. ›› 2017, Vol. 33 ›› Issue (10): 1177-1181.DOI: 10.1016/j.jmst.2017.05.009

• Orginal Article • Previous Articles     Next Articles

In-situ synthesis of Al76.8Fe24 complex metallic alloy phase in Al-based hybrid composite

Zhao Kea, Cao Baobaob, Liu Jinlingc(), Wang Yiguanga, An Linand   

  1. aScience and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi’an 710072, China
    bSchool of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
    cState Key Laboratory of Traction Power, School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China
    dDepartment of Materials Science and Engineering, Advanced Materials Processing and Analysis Center, University of Central Florida, Orlando, FL 32816, USA
  • Received:2017-01-06 Revised:2017-03-20 Accepted:2017-04-23 Online:2017-10-25 Published:2018-01-25
  • About author:

    1 These two authors contributed equally to this paper.

Abstract:

The complex metallic alloy (CMA), Al76.8Fe24, was in-situ synthesized in the Al-based hybrid composite by powder metallurgy technique. The structural analysis by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy indicated that the Al76.8Fe24 CMA phase was formed by diffusion of Fe atoms into the Al matrix during the sintering stage. The formation of the CMA phase was mainly determined by the sintering temperature which was just above the eutectic temperature of Al-Fe. Moreover, the fully dense Al-based hybrid composite was obtained and exhibited ultrahigh strength ~1100 MPa, indicating that this method is expected to be effective in producing CMA particle reinforced Al-based hybrid composite.

Key words: Complex metallic alloy (CMA), Mechanical alloying, Aluminum, Hybrid composites