On the effect of gamma phase formation on the pseudoelastic performance of polycrystalline Fe-Mn-Al-Ni shape memory alloys

abstract

• 2015 Acta Materialia Inc. In recent years, iron-based shape-memory-alloys such as Fe-Mn-Al-Ni came into focus, due to superior pseudoelastic performance and concomitantly low costs of the alloying elements. The formation of the ductile -phase in polycrystalline Fe-Mn-Al-Ni and its impact on the pseudoelastic performance have not been addressed, yet. Based on modification of quenching conditions this study shows that controlled -phase precipitation at grain boundaries can suppress intergranular cracking without affecting pseudoelasticity. In situ incremental strain tests revealed good recoverability up to about 8% strain.

authors

• Karaman, Ibrahim

published proceedings

• SCRIPTA MATERIALIA

author list (cited authors)

• Vollmer, M., Segel, C., Krooss, P., Guenther, J., Tseng, L. W., Karaman, I., ... Niendorf, T.

citation count

• 72

complete list of authors

• Vollmer, M||Segel, C||Krooß, P||Günther, J||Tseng, LW||Karaman, I||Weidner, A||Biermann, H||Niendorf, T

publication date

• November 2015

publisher

• Elsevier  Publisher

published in

• Scripta Materialia  Journal

keywords

• Mechanical Properties
• Microstructure
• Precipitation
• Quenching
• Shape Memory Alloys (SMAs)

Digital Object Identifier (DOI)

• 10.1016/j.scriptamat.2015.06.013

start page

• 23

end page

• 26

volume

• 108

URL

• http%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.scriptamat.2015.06.013