THE INFLUENCE OF ANISOTHERMAL HARDENING ON THE LOW CARBON STEEL PROPERTIES

  • 1Department of Mechanical Engineering, Institute of Technology and Business in Ceske Budejovice, Ceske Budejovice, CZ
  • 2Departmen of Civil Engineering, Institute of Technology and Business in Ceske Budejovice, Ceske Budejovice, CZ

Abstract

The purpose of hardening is the increase the hardness of the steel by creating an imbalanced structure. High hardness can be achieved by the formation of a martensitic structure. In some specific cases, we try to obtain a bainitic structure when hardening. In real hardening processes, a martensitic structure is usually achieved on the surface of the body, producing a mixture of martensite, bainite and other types of microstructures in the core of the body. The contribution deals with the influence of anisothermal hardening on selected mechanical properties of EN ISO S235JR (G2) steel. The observed values are the HBW hardness, Rm strength and hardness A. At the hardness measurement locations, the structural steel compositions are metallographically evaluated in the surface of hardened and non-hardened samples that are mutually compared. Subsequently, the influence of hardening on the examined mechanical properties and dependencies descibing the correlation of the structure and hardness of the hardened steels is deduced.

Recommended articles

EFFECT OF SELECTED FACTORS ON MASS CONCENTRATION OF AIRBORNE DUST DURING WOOD SANDING

Miroslav Dado, Lucia Mikusova, Marian Schwarz, Richard Hnilica
Keywords: photometer | workplace air | real-time measurement | concentration | aerosol | safety

CURRENT ADVANCES IN HIGH AVERAGE POWER DIODE-PUMPED LASERS

Martin Hanus, Martin Divoky, Petr Navratil, Michal Chyla, Jan Pilar, Ondrej denk, Antonio Lucianetti
Keywords: Laser | diode | power | High

EFFECT OF THE DYNAMIC REFLECTIVITY ON LASER ENERGY ABSORPTION BY ZINC: NUMERICAL TWO-TEMPERATURE MODELING

Sergey Lizunov, Vladimir Zhukov, Alexander Bulgakov, Nadezhda Bulgakova
Keywords: finite difference method | two-temperature model | numerical modeling | electron heat conductivity | dynamic reflectivity | zinc | ultrafast laser

PROCESSING AND DIGITALIZATION OF VALUES OF GEOMETRIC TOLERANCES

Matej Hrabcak, Luba Bicejova, Slavko pavlenko
Keywords: application | digitalization | geometric tolerances