Effects of crystallographic orientation on the superelastic response of FeMnAlNi single crystals Academic Article

abstract

• 2016 Elsevier B.V. All rights reserved. The effects of crystal orientation on the tensile superelastic response of the Fe43.5Mn34Al15Ni7.5 single crystalline shape memory alloy, oriented along the < 100 > and < 123 > directions were investigated. The single crystals aged at 200 C for 3 h demonstrated superelastic strains of 3.6% along the < 100 > orientation and 7.8% along the < 123 > orientation. Although the theoretical transformation strain in the < 100 > orientation is higher than that in the < 123 > orientation, the < 123 > oriented single crystals demonstrate better superelastic recovery in tension due to a higher number of active martensite variants, which promote better accommodation of internal strains and help minimize defect formation during transformation.

authors

• Karaman, Ibrahim

published proceedings

• SCRIPTA MATERIALIA

author list (cited authors)

• Tseng, L. W., Ma, J. i., Wang, S. J., Karaman, I., & Chumlyakov, Y. I.

citation count

• 52

complete list of authors

• Tseng, LW||Ma, Ji||Wang, SJ||Karaman, I||Chumlyakov, YI

publication date

• April 2016

publisher

• Elsevier  Publisher

published in

• Scripta Materialia  Journal

keywords

• FeMnAlNi
• Iron-based Shape Memory Alloys
• Martensite Variants
• Single Crystals
• Superelasticity

Digital Object Identifier (DOI)

• 10.1016/j.scriptamat.2016.01.032

start page

• 147

end page

• 151

volume

• 116

URL

• http%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.scriptamat.2016.01.032