液体窒素温度下におけるステンレス鋼SUS304のねじり, 引張りと圧縮の繰返し変形に及ぼす予ひずみの影響

概要

論文の詳細を見る
Cyclic plastic deformation subsequent to pre-strain of SUS 304 stainless steel is experimentally investigated at low temperature in liquid nitrogen under torsional, tensile and compressive loading conditions. Thin-walled tubular specimens given pre-strain were subjected to cyclic loading under stress-controlled conditions. The pre-strain is conducted at 77 K, and subsequent cyclic lading under constant strain amplitude is given at 77 K. The cyclic stress-strain curves are saturated by increasing number of cyclic. At small number of cyclic, cyclic plastic deformation depends on the pre-strain direction. The pre-strain perpendicular to cyclic loading directions results in large hardening at the same accumulated plastic strain value comparing with the pre-strains of the same direction as cyclic loading directions. The directional effect of pre-strain on cyclic loading with increasing number of cycles becomes small.
一般社団法人日本機械学会の論文
1998-01-25