Investigation on Effect of Solution-Stabilizing Post Heat Treatment on Microstructure of AISI321 Stainless Steel
In this investigation, AISI321 steel was solution - stabilizing post heat treated in various temperatures and times after SMAW welding. Results show, increasing of temperature in solution and stabilizing heat treatment, raise sensitization; in addition, by increasing of the solution heat treatment time, sensitization enhances. However, increasing the time of stabilizing heat treatment creates less chrome carbides, so the sensitization decreases. These heat treatments reduce the amount of delta ferrite and change its morphology from narrow and acicular shape to discontinues and separate globular particles. Moreover, more carbide and carbonitrid of Ti and Nb are also created.
A. Kiet Tieu, Hongtao Zhu and Qiang Zhu
A. Mahmoudi et al., "Investigation on Effect of Solution-Stabilizing Post Heat Treatment on Microstructure of AISI321 Stainless Steel", Materials Science Forum, Vols. 773-774, pp. 785-794, 2014