Ultra-high temperature multi-component shape memory alloys Academic Article

abstract

• 2018 Elsevier Ltd This paper presents martensitic transformation characteristics of selected multi-component (Ni,Pd)50(Ti,Hf,Zr)50 alloys, with an emphasis on superelasticity and thermal actuation behavior. We report, for the first time, austenite finish temperatures beyond 700 C in NiTi-based high temperature shape memory alloys without the presence of platinum and gold. The increase in transformation temperatures, and transformation stress and recovered strains at elevated temperatures are attributed to the high configurational entropy of the studied alloys. Based on the current findings, we introduce multi-component ultra-high temperature shape memory alloys, which are expected to pioneer a completely new field of study and applications for shape memory alloys.

authors

• Karaman, Ibrahim

published proceedings

• SCRIPTA MATERIALIA

altmetric score

• 69.002

author list (cited authors)

• Canadinc, D., Trehern, W., Ma, J. i., Karaman, I., Sun, F., & Chaudhry, Z.

citation count

• 51

complete list of authors

• Canadinc, Demircan||Trehern, William||Ma, Ji||Karaman, Ibrahim||Sun, Fanping||Chaudhry, Zaffir

publication date

• January 2019

publisher

• Elsevier  Publisher

published in

• Scripta Materialia  Journal

keywords

• High Entropy Alloys
• High Temperature Shape Memory Alloys
• Martensitic Transformation
• Multi-component Alloys
• Superelasticity

Digital Object Identifier (DOI)

• 10.1016/j.scriptamat.2018.08.019

start page

• 83

end page

• 87

volume

• 158