TAMU-UIB collaboration: TAMU-UIB collaboration: characterization of Ni-Ti-Zr characterization of Ni-Ti-Zr and Ni-Ti-Hf high temperature and Ni-Ti-Hf high temperature shape memory alloys shape memory alloys A. Evirgen 1 , I. Karaman 1 , R. Santamarta 2 , J. Pons 2 1. Dept. of Mechanical Eng., Texas A&M University, TX, USA 2. Dept. of Physics, Univ. Balearic Islands, Palma de Mallorca, Spain
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Evirgen 1 , I. Karaman 1 , R. Santamarta 2 , J. Pons 2
TAMU-UIB collaboration: characterization of Ni-Ti-Zr and Ni-Ti-Hf high temperature shape memory alloys. Evirgen 1 , I. Karaman 1 , R. Santamarta 2 , J. Pons 2 1. Dept. of Mechanical Eng., Texas A&M University, TX, USA 2. Dept. of Physics, Univ. Balearic Islands, Palma de Mallorca, Spain. - PowerPoint PPT Presentation
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TAMU-UIB collaboration: TAMU-UIB collaboration:
characterization of Ni-Ti-Zr and Ni-Ti-Hf characterization of Ni-Ti-Zr and Ni-Ti-Hf
high temperature shape memory alloyshigh temperature shape memory alloys
TAMU-UIB collaboration: TAMU-UIB collaboration:
characterization of Ni-Ti-Zr and Ni-Ti-Hf characterization of Ni-Ti-Zr and Ni-Ti-Hf
high temperature shape memory alloyshigh temperature shape memory alloys
A. Evirgen1, I. Karaman1, R. Santamarta2, J. Pons2
1. Dept. of Mechanical Eng., Texas A&M University, TX, USA
2. Dept. of Physics, Univ. Balearic Islands, Palma de Mallorca, Spain
Activity in the framework of IIMEC in 2011Activity in the framework of IIMEC in 2011Activity in the framework of IIMEC in 2011Activity in the framework of IIMEC in 2011
PhD Student Exchange Activity: TAMU – UIB
Summer research stay of ALPER EVIRGEN (I. Karaman’s PhD
Activity in the framework of IIMEC in 2011Activity in the framework of IIMEC in 2011Activity in the framework of IIMEC in 2011Activity in the framework of IIMEC in 2011
PhD Student Exchange Activity: TAMU – UIB
Summer research stay of ALPER EVIRGEN (I. Karaman’s PhD
student) in UIB. July 2011 Financed by IIMEC
Research topic:
Study of (Ni-rich) Ni-Ti-Zr and Ni-Ti-Hf HTSMAs
NiTi: TM ~ 80ºC Increase of Ni content → TM drops
Substitution of Ti by Hf or Zr raises TM (Ti+Hf/Zr)-rich ternary alloys
Recently, study of Ni-rich ternary alloys
High industrial interest (automotive, aerospace, …)
Activity in the framework of IIMEC in 2011Activity in the framework of IIMEC in 2011Activity in the framework of IIMEC in 2011Activity in the framework of IIMEC in 2011
The precipitates show an enhanced contrast every three 011 planes and extra spots in the diffraction patterns. They are fully coherent with austenitic matrix.