Published online by Cambridge University Press: 26 February 2011
The partial phase diagram of the Fe-Mn-Si system at 900°C was obtained by electron microprobe measurement. In addition, the effect of carbon on these equilibrium were also studied. Depending on these, a series of Fe-Mn-Si-C alloys with the matrix of Fe3Si were designed. It was found that they all have some plasticity and can satisfy the engineering requirement. Moreover, after appropriate heat treatment, all these alloys have good corrosion resistance in sulphuric acid with various concentrations.