鉄基二元系合金の結晶粒界内部摩擦

概要

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The temperature dependence of the internal friction and the shear modulus of several iron binary alloys (alloying elements : C, Co, V, Al, Ti, Zr) was measured under cold-worked and primarily recrystallized condition. Some resemblance was seen between the temperature dependence of as-cold-worked internal friction or shear modulus and that of as-annealed. The effects of the alloying elements on the so-called grain boundary internal friction phenomena are as follows : 1) With increasing size-factor and content of the alloying element, the activation energy of the solvent peaks and the solute peaks increases. 2) If the size-factor is large, even a small addition of the alloying element causes at ransition from solvent peak to solute peak. 3) The alloying elements increase half-value width of the peak. 4) The correspondence of the internal friction peak height and the ⊿M effect is missed in some cases. In place of the grain boundary sliding model which has many difficulties on its application, a new mechanism was proposed based on movement of the sub-boundary dislocation or migration of a special boundary i.e. a coincidence site lattice boundary on which sub-boundary dislocation net-work is superimposed.
社団法人日本鉄鋼協会の論文
1968-09-01