Cu precipitation-mediated formation of reverted austenite during ageing of a 15–5 PH stainless steel

• DOI: 10.1016/j.scriptamat.2021.114007
• Publication Date: 2021-06-01T20:54:27Z
• Authors: Tao Zhou; Benjamin Neding; Sen Lin; Jo-Chi Tseng; Peter Hedström
• Keywords: Lath; Atom probe; Diffusionless transformation

A Cu precipitation-mediated austenitic transformation during ageing treatment of a 15–5 PH stainless steel is revealed through atom probe tomography, in situ synchrotron X-ray diffraction and computational thermodynamics kinetics. The proposed to occur the pathway: precipitation at martensite/retained austenite interfaces or martensite lath boundaries → partitioning stabilizing elements towards precipitates reverted formation.