The correlation between valence electrons per atom (e_v/a) and the characteristic transition temperatures of quaternary and quinary Fe-based shape memory alloys (SMAs) is investigated. Regression equations relating their transformation temperatures (M_s, A_s) to composition and e_v/a are obtained. On adding alloying elements to the SMAs, their transformation temperatures get altered and this is correlated to their e_v/a ratio. Three distinct trends between the e_v/a ratio and transformation temperatures are found. The correlation between the transformation hysteresis and the atom diameter of the alloying elements is also analysed.

中文翻译：

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铁基记忆金属的磁滞和特征转变温度的理论分析

研究了每个原子的价电子（e _v / a）与四元和五元铁基形状记忆合金（SMAs）的特征转变温度之间的相关性。获得了将其转变温度（M _s，A _s）与成分和e _v / a相关的回归方程。在将合金元素添加到SMA时，其转变温度会发生变化，这与其e _v / a比率相关。e _v / a之间的三个明显趋势找到比率和转变温度。还分析了转变磁滞与合金元素的原子直径之间的相关性。