EVALUATION OF SHAPE MEMORY EFFECT AND DAMPING CHARACTERISTICS OF Cu-Al-Be-Mn SHAPE MEMORY ALLOYS

Publication date: Available online 26 April 2016 Source:Perspectives in Science Author(s): A.G Shivasiddaramiah, U.S Mallik, L Shivaramu, S Prashanth Among different Shape Memory Alloys, copper (Cu) based alloys were the most favorable alloys, because of their attaining price and good characteristic properties. In this present work different weight compositions of Cu–Al–Be–Mn shape memory alloys are considered and are in the range of 10–14 wt% of aluminium (Al), 0.4–0.5wt% of Beryllium (Be) and 0.3–0.4wt. % of manganese (Mn) and these alloys were synthesized by ingot metallurgy, which exhibits β-phase at higher temperatures, also demonstrates a shape memory effect (SME) after quenching to room temperature. The Be, Mn and Al content was varied in different sets to study the shape memory effect and damping behavior of the alloys by using differential scanning calorimetry and dynamic mechanical analyzer respectively. These alloys exhibit higher damping or internal friction in the martensitic condition and internal friction or damping peak in the transition zone.

Source: Perspectives in Science - April 26, 2016 Category: Science Source Type: research