Hot Working Effects on the Damping Behavior of Shape Memory Alloys

Abstract:

Cu-Zn-Al shape memory alloys (SMAs) were analysed in two different processing states: (i) hot-forged and (ii) hot-rolled. Both hot-forged and hot-rolled specimens were cut into lamellar configuration, before being homogenized (1073 K/ 18 ks/ water) and tempered (373, 473, 573, 673 K/ 300 s/ water). From each of the five differently treated lamellas, in hot-forged and hot-rolled states, rectangular specimens were cut for dynamic mechanical analysis (DMA). The remaining segments were sectioned into metallographic specimens. The metallographic specimens were embedded into could mounting resin, ground, polished and etched for scanning electron microscopy (SEM) -observations. DMA results revealed the influence of plastic deformation procedure and heat treatment temperature on the reversible martensitic transformation.

• Periodical: Materials Science Forum (Volume 907)
• Pages: 180-187
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.907.180
• Online since: September 2017
• Authors: Mihai Popa, Bogdan Pricop, Elena Mihalache, Leandru Gheorghe Bujoreanu, Nicoleta Monica Lohan*
• Keywords: Cu-Zn-Al Shape Memory Alloys, Dynamic Mechanical Analysis, Martensite, Morphology

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