Local Stress Analysis in an SMA during Stress-Induced Martensitic Transformation by Kossel Microdiffraction

• DOI: 10.4028/www.scientific.net/amr.996.45
• Publication Date: 2014-08-11T16:12:48Z
• Authors: Denis Bouscaud; Sophie Berveiller; Raphaël Pesci; Etienne Patoor; Adam Morawiec
• Keywords: Diffusionless transformation

The Kossel microdiffraction in a scanning electron microscope allows for local stress determination. This technique has been applied to monitor evolution within grains of austenite the course martensitic transformation shape memory alloy. diffraction patterns were recorded during situ tensile straining Cu-Al-Be These innovative measurements show large heterogeneities between grains, with ratio exceeding two. As martensite variants are stress-induced, shear components appear individual austenite.