Quantification of retained austenite by X-ray diffraction and saturation magnetization in a supermartensitic stainless steel
- Departamento de Engenharia Metalúrgica e de Materiais - Escola de Engenharia da UFMG, 31270–901 Belo Horizonte, MG (Brazil)
- Escola de Engenharia de Lorena – USP, 12600–970 Lorena, SP (Brazil)
The good performance of supermartensitic stainless steels is strongly dependent on the volume fraction of retained austenite at room temperature. The present work investigates the effect of secondary tempering temperatures on this phase transformation and quantifies the amount of retained austenite by X-ray diffraction and saturation magnetization. The steel samples were tempered for 1 h within a temperature range of 600–800 °C. The microstructure was characterized using scanning electron microscopy and electron backscatter diffraction. Results show that the amount of retained austenite decreased with increasing secondary tempering temperature in both quantification methods. - Highlights: • The phase transformation during secondary tempering temperatures was observed. • Phases were quantified by X-ray diffraction and DC-saturation magnetization. • More retained austenite forms with increasing secondary tempering temperature. • The retained austenite is mainly located at the grain and lath boundaries.
- OSTI ID:
- 22587150
- Journal Information:
- Materials Characterization, Vol. 115; Other Information: Copyright (c) 2016 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
- Country of Publication:
- United States
- Language:
- English
Similar Records
In-situ determination of austenite and martensite formation in 13Cr6Ni2Mo supermartensitic stainless steel
Meta-equilibrium transition microstructure for maximum austenite stability and minimum hardness in a Ti-stabilized supermartensitic stainless steel