極低温荷重制御引張り試験におけるオーステナイト系ステンレス鋼の変形挙動
1988 年 23 巻 4 号 p. 205-210
詳細
1988 年 23 巻 4 号 p. 205-210
In load-control tensile tests at liquid helium temperature, an abrupt and large discontinuous deformation occurs, which differs from the discontinuous deformation obtained from displacement-control tests and reduces an obtained tensile strength. The effects of loading rate on the tensile properties of austenitic stainless steels at 4K were widely investigated. A large deformation, near 40% occurred in AISI 310. The ultimate tensile strength decreased with the increase of loading rate, and had minimum value, 71-80% of tensile strength obtained in displacement-control test at a loading rate.
