The Irreversible Critical Range in the TiNi Transition
The Irreversible Critical Range in the TiNi Transition
复制标题
TiNi转变中的不可逆临界范围
DOI：
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发表时间：
1968
期刊：
影响因子：
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通讯作者：
W. Hosler
中科院分区：
文献类型：
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作者：
Frederick E. Wang;B. Desavage;W. J. Buehler;W. Hosler
通过对TiNi在其"马氏体“转变温度及其附近的输运和相关热力学性质的研究，确定了在60°C区间内存在一个临界范围。在这个临界范围内，相变是二级的。在临界范围内的各种属性的不可逆性解释在不可逆的剪切运动的原子。运输数据的基础上，带结构的TiNi被推断为一个单一的或“几乎”单一的正带内的温度范围内的调查。假设一些价电子在二级跃迁过程中经历了"共价“→”传导“的电子转变，这在很大程度上与实验数据一致。
Through an investigation of the transport and related thermodynamic properties of TiNi at and around its ``martensitic' transition temperature, the existence of a critical range extending over a 60°C interval is established. Within this critical range, the phase transition is second order. Irreversibility of various properties within the critical range is interpreted in terms of irreversible shear movement of atoms. On the basis of transport data, the band structure of TiNi is inferred to be a single or ``nearly' single positive band within the temperature range investigated. The postulate that some of the valence electrons undergo a ``covalent'→``conduction' electronic transformation in the course of the second‐order transition is consistent in large measure with experimental data.