Abstract
In the present investigations an application of the superplastic phenomena to the sintering of pure iron and cast iron powder has been demonstrated.
In the characteristic contraction-cycle number curves there exists the typical break point for both the powders; i.e. the curve is becoming to be saturated within a zone before that point is reached and the curve finally goes on the linear relationship after the point. The present author would call the former zone to be a sintering zone and the latter a condensing zone., Incidentally the superplastic behavior of the latter has been recognized to be resemble to that of the fused materials.
From the experimental fact that the tensile tests of products sintered within only five minutes have shown the same or higher strength than that of fused materials, it could be suggested that the present application might be able to shorten the sintering period in the conventional process.
