Nickel Titanium Alloy failure analysis under thermal cycling and mechanical Loading: A Preliminary Study

TL;DR

This study explores the corrosion behavior of NiTi shape memory alloy under thermal cycling and mechanical loading using electrochemical frequency modulation, highlighting the technique's sensitivity to temperature and frequency variations.

Contribution

It introduces the application of electrochemical frequency modulation for non-destructive corrosion monitoring of NiTi alloys under complex loading conditions.

Findings

EFM technique is sensitive to temperature changes.

Corrosion rate can be rapidly assessed non-destructively.

NiTi alloy's corrosion behavior varies with thermal cycling.

Abstract

The electrochemical frequency modulation (EFM) technique can consider as a new tool for electrochemical corrosion monitoring. The calculation of corrosion rate with a non-destructive and rapid technique is a necessity to study corrosion behavior of metals under loading and thermal cycling. NiTi shape memory alloy (SMA) is characterized by differential scanning calorimetry (DSC) and uniaxial tensile testing. The corrosion behavior and reliability of technique have been examined for NiTi sample in artificial physiological solution. The results show the sensitivity of EFM technique to temperature and base frequencies.