論文
鋼製圧縮コイルばねの擬弾性残留変位のSi組成および磁場依存性
2020 年 2020 巻 65 号 p. 15-20
詳細
2020 年 2020 巻 65 号 p. 15-20
We measured the temporal change of residual displacement immediately after unloading at room temperature for three compression coil springs, SWP-B, DASH and SWOSC-V, with different Si compositions. All the total residual displacement of the compression coil spring changed logarithmically with time, and the total residual displacement increased with the compression holding time. Also, in the pearlite steel springs, the larger the Si composition, the smaller the total residual displacement. However, high-silicon oil-tempered steel spring, SWOSC-V, showed some increase of the total residual displacement. Furthermore, the total residual displacement became smaller under the magnetic field. These results suggest that the magnetic domain wall may be involved in the pinning of dislocations in the residual displacement.
