The paper studies superelasticity in a 203–523 K temperature range of the 42.5Fe-34Mn-15Al-7.5Ni-1Ti at.% oligocrystals quenched and aged at 473 K for 3 hours. It is shown that the critical stress for the stress-induced α-γ' martensitic transformation slightly grows with the test temperature increasing in accordance with the Clausius–Clapeyron relation. The value of α = dσc_r/dT characterizing this growth in quenched and aged oligocrystals, is close to 0.46 and 0.37 MPa/K, respectively. Regardless of the structural condition, superelasticity is observed within the whole mentioned temperature range. At room temperature, the maximum superelasticity is 6.0 and 6.8% of quenched and aged oligocrystals, respectively. A rapid degradation of the functional properties of oligocrystals is detected during the loading-unloading cycles at room temperature. After ten isothermal loading-unloading cycles, residual strain of 2.8 and 1.7% is observed in quenched and aged oligocrystals, respectively.

该论文研究了42.5Fe-34Mn-15Al-7.5Ni-1Ti at。％低聚物在203-523 K温度范围内的超弹性，并在473 K下淬火了3小时。结果表明，随着试验温度的升高，应力引起的α-γ'马氏体相变的临界应力随克劳修斯-克拉珀龙关系的增加而略有增加。α=dσcr的_值/ dT表征了在淬火和老化的寡晶中的这种生长，分别接近0.46和0.37 MPa / K。无论结构条件如何，在整个提到的温度范围内都可以观察到超弹性。在室温下，最大超弹性分别为淬火和老化的微晶的6.0和6.8％。在室温下的加载-卸载循环过程中，检测到了低聚物功能特性的快速下降。经过十次等温加载-卸载循环后，在淬火和时效的寡晶中分别观察到了2.8和1.7％的残余应变。