Details

Autor(en) / Beteiligte

• Calik, Adnan
• Ucar, Nazim
• Yeniay, Nuri

Titel

A Study of Boronizing Kinetics and Its Effect on the Structure and Mechanical Properties of Steel 16MnCr5

Ist Teil von

• Metal science and heat treatment, 2022-05, Vol.64 (1-2), p.63-68

Ort / Verlag

New York: Springer US

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The kinetics of boronizing of low-alloy steel 16MnCr5 at 1123, 1173 and 1223 K for 2, 4 and 6 h in powder mixtures using the Ekabor-II agent is studied for determining the possibility of raising the surface properties of this steel. The microstructure is studied using optical and electron microscopy and x-ray diffractometry. The mechanical properties of the steel boronized by different variants are analyzed. It is shown that the growth of the boride layer with time obeys a parabolic dependence. The activation energy of boron diffusion and the pre-exponential factor are determined. An empirical equation is obtained for predicting the thickness of boronized layer on steel 16MnCr5 as a function of the temperature and time of the boronizing. Boronizing is shown to increase the yield strength and the ultimate tensile strength of the steel at lowering of the ductility. Boronizing at 1223 K for 6 h produces a boronized layer with a hardness of 1940 HV 0.1 at a hardness of the matrix equal to 401 HV 0.1 .