Abstract
In the present paper the investigation of carbon diffusion and hardness changes in Fe-C-Cr-Mn-Si steels initiated by surface oxidation are reported. The oxidation anneals were carried out in ambient air. The measurements of carbon concentration and the metallographic investigation have shown that the steels decarburize expressively in the course of the oxidation process. The evaluation of the carbon concentration curves N{sub C}(x, t) yielded diffusion coefficients D{sub C} of carbon in the given steels. The dependence of D{sub C} on the concentration N{sub i} of alloying elements i is expressed by the use of diffusion interaction coefficients {beta}{sub C}{sup i}. The decrease of carbon concentration caused the increase of grain size in subsurface layers and the decrease of hardness HV. The dependence of HV(x, t) on N{sub C}(x, t) is expressed by the general parabolic relationship y(t) = k t{sup m}. (orig.) 24 refs.
Kucera, J;
Broz, P;
[1]
Hajduga, M;
Glowacki, J
[2]
- Academy of Sciences, Brno (Czech Republic)
- Tech. Univ., Lodz (Poland). Dept. of Mater. Sci.
Citation Formats
Kucera, J, Broz, P, Hajduga, M, and Glowacki, J.
Decarburization and hardness changes of Fe-C-Cr-Mn-Si steels caused by high temperature oxidation in ambient air.
Germany: N. p.,
1999.
Web.
Kucera, J, Broz, P, Hajduga, M, & Glowacki, J.
Decarburization and hardness changes of Fe-C-Cr-Mn-Si steels caused by high temperature oxidation in ambient air.
Germany.
Kucera, J, Broz, P, Hajduga, M, and Glowacki, J.
1999.
"Decarburization and hardness changes of Fe-C-Cr-Mn-Si steels caused by high temperature oxidation in ambient air."
Germany.
@misc{etde_681189,
title = {Decarburization and hardness changes of Fe-C-Cr-Mn-Si steels caused by high temperature oxidation in ambient air}
author = {Kucera, J, Broz, P, Hajduga, M, and Glowacki, J}
abstractNote = {In the present paper the investigation of carbon diffusion and hardness changes in Fe-C-Cr-Mn-Si steels initiated by surface oxidation are reported. The oxidation anneals were carried out in ambient air. The measurements of carbon concentration and the metallographic investigation have shown that the steels decarburize expressively in the course of the oxidation process. The evaluation of the carbon concentration curves N{sub C}(x, t) yielded diffusion coefficients D{sub C} of carbon in the given steels. The dependence of D{sub C} on the concentration N{sub i} of alloying elements i is expressed by the use of diffusion interaction coefficients {beta}{sub C}{sup i}. The decrease of carbon concentration caused the increase of grain size in subsurface layers and the decrease of hardness HV. The dependence of HV(x, t) on N{sub C}(x, t) is expressed by the general parabolic relationship y(t) = k t{sup m}. (orig.) 24 refs.}
journal = []
issue = {7}
volume = {90}
journal type = {AC}
place = {Germany}
year = {1999}
month = {Jul}
}
title = {Decarburization and hardness changes of Fe-C-Cr-Mn-Si steels caused by high temperature oxidation in ambient air}
author = {Kucera, J, Broz, P, Hajduga, M, and Glowacki, J}
abstractNote = {In the present paper the investigation of carbon diffusion and hardness changes in Fe-C-Cr-Mn-Si steels initiated by surface oxidation are reported. The oxidation anneals were carried out in ambient air. The measurements of carbon concentration and the metallographic investigation have shown that the steels decarburize expressively in the course of the oxidation process. The evaluation of the carbon concentration curves N{sub C}(x, t) yielded diffusion coefficients D{sub C} of carbon in the given steels. The dependence of D{sub C} on the concentration N{sub i} of alloying elements i is expressed by the use of diffusion interaction coefficients {beta}{sub C}{sup i}. The decrease of carbon concentration caused the increase of grain size in subsurface layers and the decrease of hardness HV. The dependence of HV(x, t) on N{sub C}(x, t) is expressed by the general parabolic relationship y(t) = k t{sup m}. (orig.) 24 refs.}
journal = []
issue = {7}
volume = {90}
journal type = {AC}
place = {Germany}
year = {1999}
month = {Jul}
}