Influence of Thermal Cyclic Deformation and Hardening Heat Treatment on the Structure and Properties of Steel 10

• Published in: Applied Mechanics and Materials Vol. 788; no. Actual Problems and Decisions in Machine Building; pp. 187 - 193
• Main Authors: Prudnikov, Vladimir, Prudnikov, Aleksandr, Popova, Marina
• Format: Journal Article
• Language: English
• Published: Zurich Trans Tech Publications Ltd 01.08.2015
• Subjects: Deformation; Hardening; Heat treatment; Hot rolling; Low carbon steels; Sheet metal; Strength; Strip steel; Structural steels; Thermal cycling; Hardening; Deformation; Thermal Cyclic Deformation; Mechanical Properties; Steel; Structure; Quenching
• ISBN: 3038355518; 9783038355519
• ISSN: 1660-9336; 1662-7482; 1662-7482
• DOI: 10.4028/www.scientific.net/AMM.788.187

The results of the influence of preliminary thermal cyclic deformation and subsequent hardening heat treatment on the microstructure and mechanical properties of hot-rolled sheet steel 10 are presented. It is shown that the use of preliminary thermal cyclic deformation of the steel 10 stock material results in a fine-grained structure of a hot-rolled sheet (3 mm thick) produced by an industrial technology. Deformation occurred at a temperature above AC3 (1250 °C), with cooling to 200-300 °C during 10 cycles and the deformation ratio per cycle being 6-8 %. Such a treatment before sheet hot-rolling allows increasing the strength characteristics (tensile strength, yield strength) by almost 30 %. It has been established that the use of subsequent heat treatment (quenching, 900 °C, water and tempering 1 h, 600 °C) leads to a further increase in strength characteristics by 15-20% while maintaining a sufficient level of ductility of sheet steel.