Influence of Hot Plastic Deformation in γ and (γ + α) Area on the Structure and Mechanical Properties of High-Strength Low-Alloy (HSLA) Steel

Materials

Michal Zemko¹  Jan Sas²  Ondrej Milkovič³  Tibor Kvačkaj⁴ 

[1] COMTES FHT a.s., Průmyslová 995, 33441 Dobřany, Czech Republic;Institute for Technical Physics, Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany;Institute of Materials Research, Slovak Academy of Sciences, 04200 Kosice, Slovakia;Institute of Materials, Technical University of Kosice, 04200 Kosice, Slovakia;

关键词: high-strength low-alloy (HSLA) steel;    controlled rolling;    mechanical properties;    microstructure;    dual-phase region;   

DOI  :  10.3390/ma9120971

来源: DOAJ

【 摘 要 】

The main goal of this study was to develop a new processing technology for a high-strength low-alloy (HSLA) steel in order to maximize the mechanical properties attainable at its low alloy levels. Samples of the steel were processed using thermal deformation schedules carried out in single-phase (γ) and dual-phase (γ + α) regions. The samples were rolled at unconventional finishing temperatures, their final mechanical properties were measured, and their strength and plasticity behavior was analyzed. The resulting microstructures were observed using optical and transmission electron microscopy (TEM). They consisted of martensite, ferrite and (NbV)CN precipitates. The study also explored the process of ferrite formation and its influence on the mechanical properties of the material.

【 授权许可】

Unknown