Investigation on microstructure, mechanical and wear properties of alloyed gray cast iron for brake applications

Paper #:
  • 2013-01-2881

Published:
  • 2013-11-27
Citation:
Vadiraj, A. and Tiwari, S., "Investigation on microstructure, mechanical and wear properties of alloyed gray cast iron for brake applications," SAE Technical Paper 2013-01-2881, 2013, https://doi.org/10.4271/2013-01-2881.
Pages:
4
Abstract:
The strength and wear resistance of four alloyed cast irons with elements like Ni. Mo, Cu, Cr and Al have been compared and analyzed. The increased hardness is reducing the wear resistance of the alloy due to graphite flakes. Higher carbon produces more graphite flakes which act as weak points for reducing strength and wear resistance. The wear rate increases for harder cast iron sample with more graphite flakes. Wear rate drastically increases with increase in carbon equivalent. Strength was found to decrease for samples with higher graphite flakes. The wear debris consisted of graphite flakes in platelet like morphology along with iron particles from the matrix. The presence of carbon at the sliding interface also sometimes decreases wear rate.
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