Prediction of Properties in Type 347 Austenitic Stainless Steel after Long-Term Service at High Temperatures

Abstract:

The evolution of microstructure during production and elevated temperature service of type 347 austenitic stainless steel in the temperature range 700-800°C was modelled using commercial software packages such as Thermo-Calc and DICTRA and characterized using various microscopical techniques. The growth and coarsening of niobium carbonitrides and σ- phase were modelled as well as nitrogen uptake. Good agreement between predictions and microstructural observations was found.

• Periodical: Materials Science Forum (Volumes 539-543)
• Pages: 4920-4925
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.539-543.4920
• Online since: March 2007
• Authors: Jan Olof Nilsson
• Keywords: AlSl 316 Stainless Steel, High Temperature Creep, Microstructural Evolution, Niobium Carbonitride, σ-Phase

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