Influence of nodule count, austenitising variables and matrix on ductile iron decarburisation

摘要: AbstractThe surface decarburisation produced during the austenitising stage of ductile iron parts constitutes an issue that needs to be addressed in many manufacturing processes. This work examines role nodule count and other variables play on onset decarburised layer thickness. Specimens with noticeable different counts were employed perform experiments. The results showed thickness markedly decreases as increases, depth increases holding time increases. On hand, temperature has little influence process. An equation able calculate onset, was developed. yields accurate estimations for prior ferritic matrixes, is further applicable a wide range counts, which...