α鉄の加工内部摩擦ピーク
1966 年 35 巻 1 号 p. 15-28
詳細
1966 年 35 巻 1 号 p. 15-28
The cold-work damping peak in α-iron is studied with a torsionpendulum. Some significant-results obtained are: (i) the dependence of cold-workpeak height on interstitial impurity content is weaker than given by the linear relation reported in some previous papers, (ii) the peak height depends on thedeformation temperature, (iii) the cold-work peak has various activation energies (1.4_??_1.9eV), and (iv) the recovery of cold-work peak is not by a single activation energy and is of very complicated behavior. A proposed model pictured by taking the relaxation caused directly by anelastic motion of dislocation and the effects of dislocation interaction and clustering of interstitial impurities into account is considered to elucidate the above expeimental results.
