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 …

The effect of hafnium (Hf) addition on microstructural evolution and corrosion behavior of
nickel-based alloys was investigated. The findings indicated that adding Hf appropriately …

A coupling between phase transformation and viscoplasticity is observed in HTSMAs during
actuation. The dislocations generated and retained phases accumulated are responsible for …

Shape memory behavior in stoichiometric Ni–Hf–Ti shape memory alloys with high Hf was
evaluated. Five alloy compositions with a hafnium content from 30 to 50 at.% were arc …

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 …

This work presents a machine learning (ML) framework that model the anisotropic actuation
responses in a shape memory alloy. A Gaussian Process Regression (GPR) based ML …

In the last three decades, aerospace industry has required shape memory alloys with higher
phase transformation temperatures. In response to this technical challenge, High …

The paper provides a brief review of literature data on the synthesis, processing, structure,
mechanical properties, and application of nitinol and alloys based on it, which are promising …

Aging heat treatments in high temperature NiTiHf shape memory alloys (SMAs) create nano-
sized precipitates and modify their phase transformation behavior. Depending upon specific …

The purpose of this research work is to further the understanding of the coupling between
phase transformation and viscoplasticity in high-temperature shape memory alloys …