Modeling a sample size-dependency of martensitic phase transformation using a mesoscale framework

M Vasoya, DC Lagoudas - International Journal of Plasticity, 2023 - Elsevier
Predicting a sample size-dependency of the constitutive response of any material system
when it is being used in nano-and micro-scale devices, such as NEMS and MEMS, is very …

Machine learning guided alloy design of high-temperature NiTiHf shape memory alloys

UMHU Kankanamge, J Reiner, X Ma, SC Gallo… - Journal of Materials …, 2022 - Springer
With the increasing use of CubeSats in space exploration, the demand for reliable high-
temperature shape memory alloys (HTSMA) continues to grow. A wide range of HTSMAs …

Extending fatigue life of NiTiHf shape memory alloy wires through rapid thermal annealing

F Gantz, MT Wall, ML Young, DJ Forbes - Shape Memory and …, 2022 - Springer
Two challenges facing high temperature shape memory alloys (HTSMAs) involve extending
the actuation fatigue life and maximizing the actuator response. Thus, the focus of this study …

Powder bed fusion of two-functional Cu-Al-Ni shape memory alloys utilized for 4D printing

D Abolhasani, SW Han, CJ VanTyne, N Kang… - Journal of Alloys and …, 2022 - Elsevier
Transforming a 3D-printed part into a pre-programmed shape over time is called four-
dimensional (4D) printing. Shape memory alloy (SMA) is most commonly used material for …

Fracture toughness and fatigue crack growth resistance of precipitate-free and precipitation hardened NiTiHf shape memory alloys

B Young, R Orrostieta, B Haghgouyan… - Materials Science and …, 2024 - Elsevier
The present work investigates fracture toughness, and actuation and mechanical fatigue
crack growth responses of Ni 50.3 Ti 29.7 Hf 20 HTSMAs across martensitic transformation …

Order of magnitude increase in actuation fatigue lifetime through partial austenitic transformation of NiTiHf high-temperature shape memory alloys

A Demblon, JH Mabe, I Karaman - Materials Science and Engineering: A, 2023 - Elsevier
The higher transformation temperatures, strength, and thermomechanical stability of NiTiHf
high-temperature shape memory alloys (HTSMAs) are attractive for use in solid-state …

Standardization of Shape Memory Alloys from Material to Actuator

DE Nicholson, O Benafan, GS Bigelow, D Pick… - Shape Memory and …, 2023 - Springer
Abstract Development of standard specifications and test methods for shape memory alloys
(SMAs) in the context of actuator materials and components are outlined. A material …

Property and microstructure of Ni50. 3Ti29. 7Hf20 high-temperature shape memory alloys with different aging conditions

J Dong, A Demblon, T Umale, D Zhao, G Valentino… - Acta Materialia, 2024 - Elsevier
NiTiHf is a class of promising high-temperature shape memory alloys (SMAs) that find many
applications. However, their complex martensitic microstructure and attendant …

[HTML][HTML] Active interlocking metasurfaces enabled by shape memory alloys

A Elsayed, T Guleria, KC Atli, O Bolmin, B Young… - Materials & Design, 2024 - Elsevier
Interlocking metasurfaces (ILMs) are a newly developed joining technology that relies on
arrays of interlocking features that transmit force and constrain motion between adjoining …

Compositional effects on strain-controlled actuation fatigue of NiTiHf high temperature shape memory alloys

A Demblon, JH Mabe, I Karaman - Scripta Materialia, 2024 - Elsevier
Nickel-rich NiTiHf high-temperature shape memory alloys continue to garner significant
interest for actuator applications. One issue impeding their widespread use is the question of …