The present position of the solution theory of carburised iron,PartII, Journal of the Iron and Steel Institute, Vol.II (1900),pp.317-354.
Notes:
Stansfield studied the diagrams made by Roberts-Austen and roozeboom. He changes the maximum carbon content of solid austenite to 1.8%, as this appears to agree better with the evidence obtained from other sources.
About the hypereutectic region he remarks the following:"With regards to the slope of de line BD, it must be remembered that this part of the curve is somewhat difficult to obtain by the ordinary method of taking cooling curves, as the heat evolved by the separation of graphite is very slight, and the extrusion of graphite from the cooling mass renders the carbon percentage of the original fluid metal somewhat uncertain."
The cementite formation mechanism as proposed by Bakhuis Roozeboom is strongly denied by Stansfield, as practice shows the opposite.Graphite must be a reaction product of earlier formed cementite.
