Effect of Normalizing Treatment on Mechanical Properties of AISI 441 Stainless Steel Prepared by Investment Casting

In this paper, AISI 441 stainless steel was investigated as a casting using the investment process (ICP). The microstructure and mechanical properties of as-cast normalizing treatment samples were analyzed. results show that tensile strength prepared by ICP is 458 MPa, elongation 22.7%. Normalizing can improve performance ICP, but have slightly decreasing trend with increasing temperature time. suitable condition 850 °C for 2 h. It found time little effect on grain size carbonitride. There an in mean equivalent length (MEL) Laves phase increases. increment mainly related to change size.