Application of thermoelectric power measurements to the study of cold rolled austenitic stainless steels
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Austenitic stainless steels AISI 304 are widely used steels combining high-corrosion-oxidation resistance, good heat resisting properties and a relative low cost. In recent years, an increasing interest can be noted in the development of new processing routes, for which a detailed study of the microstructural evolution of the cold-rolling material at different annealing temperatures is required. Due to the complex nature of these materials, a technique that allows for a precise monitoring of the grain size evolution at different annealing stages was lacking up to now.
In this context, the aim of this study is to evaluate the utility of the thermoelectric power (TEP) measurements to characterise the recrystallised grain growth of the AISI 304 steels annealed at temperatures between 1000 and 1200 °C and for different rolling reductions. Several authors [1, 2, 3] reported that this technique is very sensitive to both the amount of atoms in solid solutions (i.e. precipitation...
KeywordsAustenitic Stainless Steel Dissolution Process Thermoelectric Power Deformation Degree Annealing Stage
The authors acknowledge financial support from European Coal and Steel Community (ECSC-7210-PR-368) and from Spanish Ministerio de Educación (MAT2002-18810-E). T. De Cock would also like to express his gratitude to the CSIC for financial support in the form of a PhD research Grant (I3P program). The authors also acknowledge Javier Vara for the experimental support.