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2011
Conference Paper
Titel
Improvement of microstructure and texture of hot extruded Ni50Mn29Ga21 alloy using post heat treatments
Abstract
It is the aim of the present paper to show the results of the microstructure and texture analyses of Ni50Mn29Ga21 alloy after post heat treatments at 1000°C. The initial microstructure of the hot extruded alloy is dynamically recrystallized with average grain size of about 100 µm. The texture is characterized by a strong fibre texture along the extrusion direction. After the post heat treatments the average grain size increases up to 600 µm and the trace of twinning planes is mostly aligned along the compression axis. Finally, synchrotron radiation is used for texture characterization. The results are discussed with respect to texture, grain growth and twinning behaviour.