Effects of deformation on the microstructure of a Cu–Al–Be shape memory alloy

Thermomechanical behavior of a CuAlBe shape memory alloy

“…As can be seen, some martensite needles remain within the ␤ phase under unloading, and disappear after the flash heating. SEM observations have also shown the increase of retained martensite with the σ m increase [5]. According to Fig.…”

“…On heating, transformation to ␤ phase starts at the temperature A s and it is completed at the temperature A f . Applying mechanical stress to the ␤ phase, 18R martensite is induced, both on tension and compression [4,5], resulting in a macroscopical shape change. Under appropriate conditions, a hysteretic loop is formed removing the load, and the strain is almost fully recovered leading to the pseudoelastic (PE) behavior.…”

Micromechanical Behavior of CuAlBe Shape Memory Alloy Undergoing 3-Point Bending Analyzed by Digital Image Correlation

“…Balo et al used these techniques to show the influence of heat treatments and beryllium content for this alloy. In this study can be observed the indexed X-ray pattern for martensite phase in addition the lattice parameters for 18R martensite were reported too [14,15].…”

SEM and X-Ray Diffraction Studies on Microstructures in Cu-26.04%Zn-4.01%Al Alloy

“…Copper-based shape memory alloys are very sensitive to the thermal eects before and after the transformation. Therefore these eects may cause important changes on crystallographic properties or the other transformation parameters of the alloys [2]. Cu-based shape memory β-phase alloys exhibit order-disorder transformation at elevated temperatures.…”