Abstract
This paper presents, for the first time, the results of studying the superelasticity of the Fe–33Mn–11Al–6Cr–7Ni crystals under compression along [001] orientation after quenching and ageing within a wide temperature range of 203 to 573 K. In quenched crystals, the critical transformation stresses σMs of the BCC–FCC martensitic transformation decrease in temperature ranges of 203–273 K and 320–443 K and, conversely, the σMs increase in temperature ranges of 273–320 K and 473–573 K with increasing temperature on the σMs(T) dependence. In aged crystals, the character of the σMs(T) dependence remains similar to quenched crystals. The maximum reversible strain εrev was 6.2 % and 4.3 % in quenched and aged crystals, respectively.
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