Papers by Keyword: Cold-Rolled Steel Sheet

Abstract: More detailed analysis of chemical compositions, cold plastic deformation and microstructure and properties change of 40Mn and 65Mn steel in recrystallization annealing process were made in the paper. How to get high plasticity and improve the performance of cold pressure processing technology as to cold-rolled 40Mn, 65Mn steel in recrystallization annealing technology, it was suggested that hardness was appropriately sacrificed to ensure the high plasticity. The paper analyzed concretely the reason of the influence of ball Fe3C to plasticity. Recrystallization annealing process and metallographic structure analysis were made. Basically set the process of 40Mn and 65Mn steel recrystallization annealing. Initially carry out the practical application, receive a better effect and have more potential applications foreground.

Abstract: Characteristic low-temperature mechanical loss peaks are reported in cold-rolled steel sheets. Similar mechanical loss peaks are observed in both metallic and paper substrates covered with thin oil films. The surface induced origin of these peaks is elucidated through direct comparison of mechanical loss peaks observed in the as-received, cold-rolled samples with loss peaks observed in metallic and paper substrates covered with thin films of the arachis oils. In all of these instances, similar low-temperature mechanical loss peaks are observed in the temperature range from 180 K up to 300 K in both low-frequency resonant and low-frequency sub-resonant mechanical spectrometers. It is concluded that low-temperature mechanical loss peaks are generated by surface induced effects that arise from the oil film itself.