The present article aims to show that high intensity compressive prestressing applied to white iron to be malleabilized, alters the final structure of the iron after malleabilization. The graphite nodules are finer and more numerous and ferritisation is greater. The phenomenon increases, with several factors as follows: intensity, repetitionmultiaxiality of prestress and hot prestressing.

Initial results of the study of correlations between finer graphite structure and certain mechanical properties show that there is little change to static properties, but some dynamic properties are improved (1).