Metals and Alloys

Schryvers, D.

doi:10.1002/9783527641864.ch29

Cited by 1 publication

(1 citation statement)

References 59 publications

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“…Blocking stress or maximum actuation stress is the external stress level above which magnetic field-induced reorientation is not possible. [13,14] Although many investigations have been reported on several aspects of FSMAs including development of new alloys, [15,16] thin films, [17] and surface characteristics, [18,19] it seems that more studies are required on their behavior under incomplete loadingunloading cycles. Suorsa [20] proposed a hysteresis model for stress-strain loops in Ni-Mn-Ga. Karaca [11] and Straka [21] investigated the stress-strain response of Ni-Mn-Ga single crystals under incomplete mechanical loadings for better understanding the hysteresis evolution.…”

Section: Introductionmentioning

confidence: 90%

Behaviors of Ferromagnetic Shape Memory Alloy Ni–Mn–Ga Under Incomplete Magneto‐Mechanical Loading–Unloading Cycles

2014

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In order to investigate the behaviors of ferromagnetic shape memory alloys (FSMAs) under incomplete magneto-mechanical loading-unloading cycles, a single crystal Ni-Mn-Ga specimen is studied with the use of specially designed and manufactured test equipment. Characterization of the specimen is done, and simple experiments are conducted to approve validity of the findings and measurements by the prepared test rig. Stress-strain responses under different constant magnetic fields as well as strainmagnetic field responses under different amounts of a constant pressure are obtained for several complete and incomplete loading-unloading cycles to investigate behaviors of an FMSA when different kinds of interruptions are imposed in the course of loading or unloading. The so-called phenomena of strain hardening and return point memory are observed in the alloy, and similarities and differences between interruption during loading and unloading are investigated.

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Section: Introductionmentioning

confidence: 90%