Reheated microstructures of semi-solid ingots of TiC<sub>p</sub>/7075Al composites

ZHANG Fu-yi; LIU Hui-min; LIU Li

doi:10.13374/j.issn1001-053x.2009.12.010

Volume 31 Issue 12

Aug. 2021

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ZHANG Fu-yi, LIU Hui-min, LIU Li. Reheated microstructures of semi-solid ingots of TiCp/7075Al composites[J]. Chinese Journal of Engineering, 2009, 31(12): 1583-1587. doi: 10.13374/j.issn1001-053x.2009.12.010

Citation:

ZHANG Fu-yi, LIU Hui-min, LIU Li. Reheated microstructures of semi-solid ingots of TiC_p/7075Al composites[J]. Chinese Journal of Engineering, 2009, 31(12): 1583-1587. doi: 10.13374/j.issn1001-053x.2009.12.010

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Reheated microstructures of semi-solid ingots of TiC_p/7075Al composites

doi: 10.13374/j.issn1001-053x.2009.12.010

1. School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;
2. New Materials Engineering Research Centre of Inner Mongolia, Hohhot 010051, China

Received Date: 2009-03-16
Available Online: 2021-08-09

Abstract

Abstract

The reheated microstructures and influencing factors of semi-solid ingots of 4.4% TiC_p/7075 composites were investigated by SEM, TEM and DSC. The results show that the optimal remehed parameters of 4.4% TiC_p/7075 composites are the remolded temperature of 590 to 610℃ and the holding time of 10 to 20 min. 4.4% TiC_p/7075 composites are of high stability during the remelting process and the size of spherical grains can hardly increase with the increase of temperature and holding time. The coarsening velocity of grains in 4.4% TiC_p/7075 is 118.96μm³·s^-1, which is less than 311.7 μm³· s^-1 for 7075 matrix alloy, and more suitable for semi-solid thixoforming.
- metal composites,
- semi-solid,
- thixoforming,
- reheating