Rapid solidified ductile Cu-Al-Mn ribbon and its elastocaloric potential

Abstract Cu-Al-Mn alloys display martensitic transformation over a wide range of temperatures. In addition to low cost, this alloy is known for its stress with reasonable latent heat favoring elastocaloric applications. However, the ductility can be limited owing ordering and intergranular fracture. Through rapid solidification by melt spinning, we show that ribbon made highly ductile (greater than 8% tensile strain in as-spun state 10% after treatment). The melt-spun related suppression L2 1 characterized through magnetic property measurement. Heat treatment promotes bamboo grain formation, increased 6.4 J g −1 . Under conditions, exhibited about 4 °C temperature change (4.4 on heating 4.2 cooling from 6.3% strain).