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Effect of stress on damping capacity of a shape memory alloy CuZnAl

N. CIMPOEŞU1,* , S. STANCIU1, M. MAYER2, I. IONIŢĂ1, R. HANU CIMPOEŞU1

Affiliation

  1. Faculty of Materials Science and Engineering, the “Gh. Asachi” Technical University from Iaşi, Bd. D. Mangeron 61A, 700050 Iaşi, Romania
  2. Netzsch GerätebauGmbH, Wittelsbacherstrasse 42, Selb /Bavaria 95100 Germany

Abstract

A copper based shape memory alloy was obtained by classical melting method. Chemical analyze beside copper, zinc and aluminum reveal small amounts of other chemical elements like iron, lead or nickel that can improve the damping capacity of shape memory alloy. Starting from chemical composition the material was analyzed in deformed and tensioned state by microstructure (SEM), dilatometry (DIL) or calorimetry (DSC) and mechanical-dynamic (DMA) point of view. Results present a nice internal friction peak, in both cases, in transformation temperatures domain with possible practical applications.

Keywords

shape memory effect, damping capacity, internal friction, storage modulus.

Submitted at: Jan. 8, 2010
Accepted at: Feb. 18, 2010

Citation

N. CIMPOEŞU, S. STANCIU, M. MAYER, I. IONIŢĂ, R. HANU CIMPOEŞU, Effect of stress on damping capacity of a shape memory alloy CuZnAl, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 2, pp. 386-391 (2010)