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“…The theoretical calculations for CRSS in Ni 2 FeGa, Co 2 NiGa, Co 2 NiA, NiTi, NiTiHf 25 , and CuZn results in 0.63, 0.76, 0.72, 0.71, 0.78 and 0.08 GPa respectively [38]. These values are consistent with corresponding experimental values presented in [20,[39][40][41][42][43][44][45][46][47].…”
Section: Transformation Strain-slip Resistance Behavior Of Smassupporting
It is well known that the achievement of high transformation strains in shape memory alloys (SMAs) has been curtailed by plastic deformation mediated via dislocation slip. In particular, the utilization of SMAs at high temperatures is also hindered by plastic slip. In this paper, an overview of the most important SMAs is provided by constructing transformation strain, transformation temperature, and slip resistance plots to put existing works in perspective. To this plots, we added results on NiTiHf alloys which impart both high temperature capability and high slip resistance at unprecedented levels. The remarkable finding is that NiTiHf alloys can undergo transformation strains near 20% and transformation temperatures exceeding 400 °C
“…The theoretical calculations for CRSS in Ni 2 FeGa, Co 2 NiGa, Co 2 NiA, NiTi, NiTiHf 25 , and CuZn results in 0.63, 0.76, 0.72, 0.71, 0.78 and 0.08 GPa respectively [38]. These values are consistent with corresponding experimental values presented in [20,[39][40][41][42][43][44][45][46][47].…”
Section: Transformation Strain-slip Resistance Behavior Of Smassupporting
It is well known that the achievement of high transformation strains in shape memory alloys (SMAs) has been curtailed by plastic deformation mediated via dislocation slip. In particular, the utilization of SMAs at high temperatures is also hindered by plastic slip. In this paper, an overview of the most important SMAs is provided by constructing transformation strain, transformation temperature, and slip resistance plots to put existing works in perspective. To this plots, we added results on NiTiHf alloys which impart both high temperature capability and high slip resistance at unprecedented levels. The remarkable finding is that NiTiHf alloys can undergo transformation strains near 20% and transformation temperatures exceeding 400 °C
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