In Situ Tensile Experiments on FeMnSi Shape Memory Alloys. Synchrotron Radiation and EBSD Characterization.

R. BOLMARO; M. AVALOS; A. DRUCKER; J. MALARRIA; V. FUSTER; H. BROKMEIER

Cuiabá

Congreso; 21 Congreso Brasilero de Ingeniería y Ciencia de Materiales; 2014

Fe-Mn-Si based Shape Memory Alloys (SMA) subject to plastic deformation show complex phenomena regarding phase transformation volume fraction, texture components, variant composition and microstructure. Taking advantage of the in-situ capabilities and high penetration of synchrotron radiation we have tested FeMnSi SMA to inspect phase transformation characteristic, main texture components and microstructure development. Tensile tests performed on site on GEMS line at Petra III, DESY, Germany, were analyzed by MAUD software, allowing the determination of textures, phase volume fraction and microstructure evolution. On loading a complete set of image plates were taken every 5o to characterize whole orientation dependent variables. After unloading a single shot was taken to follow main unloading effects. Ex-situ we proceeded with EBSD characterization to compare both techniques and in search of topological and micro-textural data unavailable by x-rays.