Identification of Quaternary Shape Memory Alloys with Near-Zero Thermal Hysteresis and Unprecedented Functional Stability (pages 1917–1923)
Robert Zarnetta, Ryota Takahashi, Marcus L. Young, Alan Savan, Yasubumi Furuya, Sigurd Thienhaus, Burkhard Maaß, Mustafa Rahim, Jan Frenzel, Hayo Brunken, Yong S. Chu, Vijay Srivastava, Richard D. James, Ichiro Takeuchi, Gunther Eggeler and Alfred Ludwig
Article first published online: 11 MAY 2010 | DOI: 10.1002/adfm.200902336
By using thin-film combinatorial methods, the lattice parameters of quaternary Ti–Ni–Cu–Pd shape memory alloys and the thermal hysteresis are tailored. Novel alloys with near-zero thermal hysteresis, as predicted by the geometric non-linear theory of martensite, are identified. The thin-film results are transferred to bulk materials and a significantly improved functional stability is found.