journal article·2020-09-01

Impacts of SiC on the microstructure and wear performances of (SiC–Al3Ti)/7075 composites

Wenda Zhang, Chengcheng Chen, Hong Xu, Yong Ma, Luchang Che, Zhenmin Du, Mengyao Dong, Binbin Dong, Jincheng Fan, Zhanhu Guo

Emerging Materials Research· Volume 9· Issue 3
Publisher page

Abstract

The influences of hybrid particles silicon carbide (SiC) and Al3Ti on the micromorphology, density, porosity, hardness and wear properties of hybrid 7075 aluminum (Al) composites fabricated through the stir-casting method were examined. In the case of fixed addition of titanium (Ti) to the hybrid 7075 material, the results show that the particle size of in-situ-formed Al3Ti alloy decreases gradually with the increase in silicon carbide addition. The density of composites first increases and then decreases with increasing silicon carbide particle content, and the porosity increases due to a certain amount of gas in the small and complex channels within the aggregates. The hardness increases with the addition of silicon carbide. Moreover, (SiC–Al3Ti)/7075 hybrid composites exhibit a lower wear rate than the 7075 alloy and Al3Ti/7075 composites. Compared with the wear rate of the alloy substrate, that of 5 wt% silicon carbide (SiC–Al3Ti)/7075 hybrid composites decreases by 17% at 15 N and 200 m sliding distance.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Aluminum Alloys Composites Properties · MXene and MAX Phase Materials · Advanced ceramic materials synthesis

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China

Department of Materials Science and Engineering, North University of China, Taiyuan, China

School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, China

Department of Science and Technology, Southwest Technique and Engineering Institute, Chongqing, China

Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, China; Integrated Composites Lab, Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN, USA

Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, China

College of Materials Science and Engineering, Changsha University of Science and Technology, Changsha, China

Integrated Composites Lab, Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN, USA

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