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Improvement of microstructure and texture of hot extruded Ni50Mn29Ga21 alloy using post heat treatments

: Böhm, A.; Navarro Y De Sosa, I.; Weisheit, L.; Chulist, R.; Skrotzki, W.

Abstract urn:nbn:de:0011-n-1747539 (235 KByte PDF)
MD5 Fingerprint: fa621c210d0f0753e35b480e1fb579fa
Erstellt am: 2.8.2011

Leibniz-Institut für Festkörper- und Werkstoffforschung, Dresden:
3rd International Conference on Ferromagnetic Shape Memory Alloys, ICFSMA 2011. Book of Abstracts : July 18-22, 2011, Dresden
Dresden, 2011
2 S.
International Conference on Ferromagnetic Shape Memory Alloys (ICFSMA) <3, 2011, Dresden>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer IWU ()

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.