Review Thermo-mechanical fatigue of shape memory alloys

Hornbogen, E.
January 2004
Journal of Materials Science;Jan2004, Vol. 39 Issue 2, p385
Academic Journal
Shape memory alloys (SMA) produce the largest anomalous reversible strains of all crystalline materials: εSM < 10% in comparison to εFM <1.0% and εFE <0.1% (FM magnetostrictive, FE electrostrictive). They are considered as active materials for applications in which large scale motions are required or because of their high damping capacity for mechanical vibrations. Their use is however limited if a large number of cycles is applied. A survey is given on fatigue phenomena in SMA: 1. classical mechanical fatigue—accumulation of defects, formation and growth of cracks, 2. shape memory fatigue—change of transformation temperatures, reduction or loss of memory, loss of pseudo elasticity or damping capacity. Finally, it is shown how a modification of microstructure by thermo-mechanical treatments (TMT) affects fatigue resistance. In this context primary defects (as introduced by TMT) and secondary defects (introduced by mechanical or thermal cycling) have to be distinguished. in case of training for the two-way effect secondary defects are introduced voluntarily.


Related Articles

  • Smart Materials Respond to Changing Environments. Sidawi, Danielle // R&D Magazine;Mar2005, Vol. 47 Issue 3, p24 

    Presents information on studies being done on piezoelectric, magnetostrictive, and shape memory alloys (SMA), the classes of smart material systems. Research effort being conducted on piezoelectric motors and ferroelectric materials; Development of a polymer platform technology that can confer...

  • PART I: 'Smart metals' providing actuation, sealing, and completion functions downhole.  // Offshore;Dec2001, Vol. 61 Issue 12, p58 

    Explores the growing applications of smart metals or shape metal alloys (SMA) in petroleum industry. Functions of the SMA; Limitations of the SMA applications in the petroleum industry; Actuation application of smart metals.

  • Influence of structural transition on transport and optical properties of Ni[sub 2]MnGa alloy. Zhou, Y.; Jin, Xuesong; Xu, Huibin; Kudryavtsev, Y. V.; Lee, Y. P.; Rhee, J. Y. // Journal of Applied Physics;6/15/2002, Vol. 91 Issue 12, p9894 

    The transport and optical properties of Ni[sub 2]MnGa alloy in the martensitic and austenitic states were investigated. The dependence of the temperature coefficient of resistivity on temperature shows kinks at the structural and ferroparamagnetic transitions. Electron-magnon and electron-phonon...

  • Review papers in Journal of Materials Science Volumes 39 and 40.  // Journal of Materials Science;Feb2005, Vol. 40 Issue 3, p813 

    Presents review papers submitted to the "Journal of Materials Science," Volumes 39 and 40. "Adhesively-bonded joints and repairs in metallic alloys, polymers and composite materials," by A. Aldan; "Thermo-mechanical fatigue of shape memory alloys," by E. Hornbogen; "Role of entropy of fusion in...

  • Hysteresis in shape memory alloys. Is it always a constant? Huang, W. M.; Xu, W. // Journal of Materials Science;Jun2005, Vol. 40 Issue 11, p2985 

    Seeks to answer whether hysteresis is always constant in a particular type of cyclic condition. Examination of an austenite shape memory alloy single crystal; Accuracy of using a linear approximation for the temperature range around the equilibrium temperature; Correlation between the variation...

  • Effects of macroscopic graphite particulates on the damping behavior of CuAlMn shape memory alloy. Qingzhou Wang; Fusheng Han; Chunxiang Cui // Journal of Materials Science;Jul2007, Vol. 42 Issue 13, p5029 

    A novel composite was fabricated using a Cu–11.9Al–2.5Mn (wt%) shape memory alloy as the matrix and macroscopic graphite particulates as the second phase. The damping behavior of the resultant composite was examined in the present study through internal friction measurements. It...

  • Surface treatment of interfacial properties of Shape Memory Alloy composites. Xu, L. D.; Sun, X. Y.; Wan, P.; Sun, X. D.; Wang, Z. Q. // Materials Research Innovations;May2015 Supplement s5, Vol. 19, pS5-734 

    The main reasons of restrictions shape memory alloy application and development are weak interfacial bonding strength between Shape Memory Alloy (SMA) fibres and matrix materials. In this paper, the interfacial properties of SMA composites are studied by the combination of theoretical analysis...

  • Fatigue of NiTi for dampers and actuators. Isalgue, Antonio; Torra, Vicenç; Casciati, F.; Casciati, S. // Advances in Science & Technology;2013, Vol. 83, p18 

    The application of Shape Memory Alloy (SMA) devices to practical uses need well established performance. The reliable application in some areas, as dampers in engineering, needs a known, relatively long fatigue life (some million oscillations). The thermomechanical properties of SMA, based on...

  • Thermodynamics of Nitinol. McNichols, J. L.; Cory, J. S. // Journal of Applied Physics;2/1/1987, Vol. 61 Issue 3, p972 

    Presents the development of a self-consistent macroscopic thermodynamics for the calculation of work, heat and dissipation for thermodynamic paths of the shape memory alloy, Nitinol. Overview of non-equilibrium thermostatics; Description of the state behavior of Nitinol; Formulation of the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics