Issues »  Volume 37, Issue 4

Influence of Heat Treatment on Spatial Distribution of Chemical Elements in Welding Microalloyed Steels

I. F. Tkachenko, M. A. Uniyat

Pryazovskyi State Technical University, 7 Universytets’ka Str., 87500 Mariupol, Ukraine

Received: 19.12.2014; final version - 28.01.2015. Download: PDF

The effect of isothermal holding of various duration at subcritical temperature on the spatial distribution of main chemical elements in the finally normalized X60, E36, and ASTM A516-65 steels is studied using SEM X-ray microanalysis. Based on results of statistical processing of the local concentrations’ measurements, a quantitative characteristic for inhomogeneity of distribution is proposed. As revealed, the most uniform distribution of the elements is achieved after holding at (710$\pm$5)°С during 1—2 hours for X60 and ASTM A516-55 steels, and 4 hours for E36 steel. The obtained results are in agreement with the change in steels microstructure caused by the mentioned heat treatment.

Key words: spatial distribution of chemical elements, microalloyed steel, heat treatment, X-ray microanalysis.

URL: http://mfint.imp.kiev.ua/en/abstract/v37/i04/0531.html

DOI: https://doi.org/10.15407/mfint.37.04.0531

PACS: 61.72.sd, 61.72.sh, 68.35.Dv, 81.20.Vj, 81.40.Ef, 81.70.Jb, 82.80.Ej

Citation: I. F. Tkachenko and M. A. Uniyat, Influence of Heat Treatment on Spatial Distribution of Chemical Elements in Welding Microalloyed Steels, Metallofiz. Noveishie Tekhnol., 37, No. 4: 531—537 (2015)

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