Accessible Requires Authentication Published by De Gruyter November 25, 2016

Effects of diffusion alloying on the microstructure and properties of TiC-reinforced Fe-based PM materials

Zili Liu, Haohan Zhang, Xiqin Liu, Yong Zheng, Xin Huang and Dehua Zou


The effects of diffusion alloying on the microstructure and properties of TiC-reinforced Fe-based powder metallurgy materials were investigated via X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, and mechanical testing. The results show that the distribution of Ti in diffusion-alloyed particles becomes more uniform with increasing diffusion time. The TiC particles formed in-situ during sintering, and the microstructure of Fe-based powder metallurgy materials prepared from diffusion-alloyed powders became rounder, more uniform and refined with increasing diffusion alloying time. The apparent hardness and the bending strength increased with increasing diffusion time. The fracture mode of the samples prepared from diffusion-alloyed powders had brittle and ductile characteristics.

*Correspondence address, Dr. Zili Liu, College of Material Science & Technology, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing, 210016, China, Tel.: +86-25-52112626, E-mail:


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Received: 2016-05-24
Accepted: 2016-09-06
Published Online: 2016-11-25
Published in Print: 2016-12-08

© 2016, Carl Hanser Verlag, München