New calorimetric-structural aspects of temperature memory effect in hot rolled Cu-Zn-Al SMAs

作者：Vitel G; Paraschiv A L; Suru M G; Cimpoesu N; Bujoreanu L G^*

来源：Optoelectronics and Advanced Materials-Rapid Communications, 2011, 5(8): 858-862.

• Temperature effect
• Cu-Zn-Al shape memory alloy
• Martensite population
• Differential scanning calorimetry
• Microstructure

Temperature memory effect (TME) is usually manifested by a kinetic stop during reverse transformation of thermally induced martensite to parent phase, after performing an incomplete heating in the previous thermal cycle, applied to a shape memory alloy (SMA). Technically TME causes the splitting of the endothermic peak corresponding to martensite reversion, on differential scanning calorimetry (DSC) thermograms. The present paper illustrates new manifestations of TME on DSC thermographs of hot rolled Cu-Zn-Al SMAs and discusses the accompanying structural changes observed by optical and scanning electron microscopy.

• 出版日期2011-8