Martensitic Transformation in Ultrafine-Grained Stainless Steel AISI 304L Under Monotonic and Cyclic Loading

• Main Authors: Heinz Werner Höppel, Hans Jürgen Maier, Thomas Niendorf, Andreas Böhner, Mathias Göken, Doris Amberger
• Format: Article
• Language: English
• Published: MDPI AG 2012-02-01
• Series: Metals
• Subjects: martensitic transformation; UFG; cyclic loading; AISI 304L; stainless steel; equal channel angular pressing; tensile test
• Online Access: http://www.mdpi.com/2075-4701/2/1/56

The monotonic and cyclic deformation behavior of ultrafine-grained metastable austenitic steel AISI 304L, produced by severe plastic deformation, was investigated. Under monotonic loading, the martensitic phase transformation in the ultrafine-grained state is strongly favored. Under cyclic loading, the martensitic transformation behavior is similar to the coarse-grained condition, but the cyclic stress response is three times larger for the ultrafine-grained condition.