高电流脉冲电子束（HCPEB）对CeO改性Al-20SiC复合材料组织与耐磨性的影响

Effect of High Current Pulsed Electron Beam (HCPEB) on the Organization and Wear Resistance of CeO-Modified Al-20SiC Composites.

作者信息

Wang Lei, Gao Bo, Sun Yue, Zhang Ying, Hu Liang

机构信息

Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), Northeastern University, Shenyang 110819, China.

Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China.

出版信息

Materials (Basel). 2023 Jun 28;16(13):4656. doi: 10.3390/ma16134656.

DOI:10.3390/ma16134656

PMID:37444970

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10342413/

Abstract

This paper investigates the joint effect of high current pulsed electron beam (HCPEB) and denaturant CeO on improving the microstructure and properties of Al-20SiC composites prepared by powder metallurgy. Grazing Incidence X-ray Diffraction (GIXRD) results indicate the selective orientation of aluminum grains, with Al(111) crystal faces showing selective orientation after HCPEB treatment. Casting defects of powder metallurgy were eliminated by the addition of CeO. Scanning electron microscopy (SEM) results reveal a more uniform distribution of hard points on the surface of HCPEB-treated Al-20SiC-0.3CeO composites. Microhardness and wear resistance of the Al-20SiC-0.3CeO composites were better than those of the Al matrix without CeO addition at the same number of pulses. Sliding friction tests indicate that the improvement of wear resistance is attributed to the uniform dispersion of hard points and the improvement of microstructure on the surface of the matrix after HCPEB irradiation. Overall, this study demonstrates the potential of HCPEB and CeO to enhance the performance of Al-20SiC composites.

摘要

本文研究了高电流脉冲电子束（HCPEB）和变性剂CeO对改善粉末冶金制备的Al-20SiC复合材料微观结构和性能的联合作用。掠入射X射线衍射（GIXRD）结果表明铝晶粒的择优取向，经HCPEB处理后Al(111)晶面呈现择优取向。通过添加CeO消除了粉末冶金的铸造缺陷。扫描电子显微镜（SEM）结果显示，经HCPEB处理的Al-20SiC-0.3CeO复合材料表面的硬质点分布更均匀。在相同脉冲次数下，Al-20SiC-0.3CeO复合材料的显微硬度和耐磨性优于未添加CeO的Al基体。滑动摩擦试验表明，耐磨性的提高归因于硬质点的均匀分散以及HCPEB辐照后基体表面微观结构的改善。总体而言，本研究证明了HCPEB和CeO在提高Al-20SiC复合材料性能方面的潜力。