Phase stability in Cu–Zn-based ternary alloys with elements of column 14

By adding small amounts of ternary elements Ge, Si or Sn, it is possible to raise the martensitic transformation temperature M S of binary B2 ordered Cu–Zn towards room temperature. Several poly and single crystal ternary alloys have been studied using resistivity and calorimetric measurements, tens...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2008-05, Vol.481, p.504-508
Main Authors: Castro Riglos, M.V., Pelegrina, J.L., Ahlers, M.
Format: Article
Language:English
Subjects:
Cu–Zn shape memory alloys
Martensitic transformation
Phase stability
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Summary:By adding small amounts of ternary elements Ge, Si or Sn, it is possible to raise the martensitic transformation temperature M S of binary B2 ordered Cu–Zn towards room temperature. Several poly and single crystal ternary alloys have been studied using resistivity and calorimetric measurements, tensile experiments and optical observations. The influence of the composition and thermomechanical pretreatment on the martensitic transformation has been analyzed. It is shown that the increase in the transformation temperature at a constant electron concentration favors competing decomposition mechanisms.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2007.01.185