Articles
  • A study on tensile strength mechanism of hypoeutectic gray cast iron reinforced by composite silicon carbide powder

  • Chunfeng Wanga,b, Jun Yanga, Guilin Liua,*, Hong Gaoa and Meiling Chena

  • aSchool of Materials Science and Engineering, Dalian Jiaotong University, Dalian, 116028, China
    bGuangxi Yuchai Machinery Co., Ltd. Yulin 537005, China

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This study aims to reveal the changes in the microstructure of hypoeutectic gray cast iron under the addition of composite silicon carbide powder of different mass fractions, and to explore how modified silicon carbide (SiC) particles of different sizes and contents improve the mechanical properties of hypoeutectic gray cast iron. The results showed that the modified SiC particles increased the nucleation, the undercooling and microstructure of hypoeutectic gray cast iron, and the tensile strength of the iron at room temperature was increased by 18,28%. The present work solves the problem that traditional SiC ceramic particles are prone to agglomeration in molten metal, analyzes its action mechanism, and can expand the application of SiC ceramic particles to strengthening metal properties of casting materials


Keywords: Composite SiC powder, Hypoeutectic gray cast iron, Microstructure, Tensile strength, Undercooling

This Article

  • 2022; 23(4): 466-475

    Published on Aug 31, 2022

  • 10.36410/jcpr.2022.23.4.466
  • Received on Jan 17, 2022
  • Revised on Feb 22, 2022
  • Accepted on Feb 23, 2022

Correspondence to

  • Guilin Liu

  • School of Materials Science and Engineering, Dalian Jiaotong University, Dalian, 116028, China
    Tel : +86-13457603693

  • E-mail: lgl@djtu.edu.cn