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A study of microstructure and property of Fe-B-C alloy modified by Ti-Ce-Mg

LI XUEYI1,* , FU HANGUANG2, KUANG JIACAI3, WANG JINTAO4

Affiliation

  1. College of Mechanical and Electrical Engineering, Shandong University of Science and Technology Qingdao 266510 , Shandong Province, P. R. China
  2. School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, P. R. China
  3. Institute of Materials Science and Engineering, Changsha University of Science and Technology, Changsha 410076, Hunan Province , P. China
  4. National Institute of Metrology, Beijing 100013, Beijing, P. R. China

Abstract

Effect of Ti Ce Mg compound modification on microstructures, mechanical property and wear resistance of cast Fe-B-C alloy containing 0.25%C, 1.80%B, 0.40%Si, 0.60%Mn an d 0.80%Cr has been investigated by optical microscopy (OM), scanning electron microscopy (SEM), and X ray diffraction (XRD) analysis, hardness test, impact test and wear test. The results indicate that the solidification microstructures of Fe-B-C alloy con sist of Fe 2 (B, C), Fe 3 (C, B), pearlite, and ferrite. Fe2 (B, C) type borocarbide is continuously distributed over the grain boundary After modification by Ti-Ce-Mg, solidification microstructures of Fe-B-C alloy are obviously refined and there are many obvi ous necking and broken net in borocarbides. The hardness of modified Fe-B-C alloy has no obvious change comparing with that of unmodified Fe-B-C alloy. Ti-Ce-Mg compound modification can considerably improve impact toughness and wear resistance of cast Fe-B- C alloy..

Keywords

Fe-B-C alloy, Ti-Ce-Mg compound modification, Solidification microstructure, Borocarbide, Mechanical property, Wear resistance.

Citation

LI XUEYI, FU HANGUANG, KUANG JIACAI, WANG JINTAO, A study of microstructure and property of Fe-B-C alloy modified by Ti-Ce-Mg, Optoelectronics and Advanced Materials - Rapid Communications, 8, 7-8, July-August 2014, pp.713-719 (2014).

Submitted at: Feb. 19, 2013

Accepted at: July 10, 2014