Effect of heat treatment on microstructure and mechanical properties of Ti-alloyed hypereutectic high chromium cast iron

25Citations
Citations of this article
17Readers
Mendeley users who have this article in their library.

Abstract

The effect of heat treatment on the microstructure and mechanical properties of Ti-alloyed hypereutectic High Chromium Cast Iron (HCCI) containing Fe-17 mass%Cr-4 mass%C-1.5 mass%Ti was investigated. The size distribution and the volume fraction of carbides (M7C3 and TiC) as well as the matrix structure (martensite) were examined by means of scanning electron microscopy (SEM) and electron backscattered diffraction (EBSD). It was found that the number of fine secondary M7C3 carbides with a size below 1 μm increases with lower holding temperatures and shorter holding times during heat treatment. The number of coarse primary M7C 3 carbides with a size above 11.2 μm increases with increasing holding temperatures and longer holding times. In addition, the number of TiC carbides increases with increasing holding times, and martensite units are more refined at longer holding times and lower holding temperatures, respectively. Moreover, the volume fraction of martensite increases with increased holding times. In conclusion, low holding temperatures close to the eutectic temperature and long holding times are the best heat treatment strategies in order to improve wear resistance and hardness of Ti-alloyed hypereutectic HCCI. © 2012 ISIJ.

Cite

CITATION STYLE

APA

Liu, Q., Hedström, P., Zhang, H., Wang, Q., Jönsson, P. G., & Nakajima, K. (2012). Effect of heat treatment on microstructure and mechanical properties of Ti-alloyed hypereutectic high chromium cast iron. ISIJ International, 52(12), 2288–2294. https://doi.org/10.2355/isijinternational.52.2288

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free