Author
Listed:
- DENG DEWEI
(School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, P. R. China†R&D Division of Shenyang Blower Works Group Corporation, Shenyang 110869, P. R. China)
- NIU TINGTING
(School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, P. R. China)
- LIU HAIYING
(School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, P. R. China)
- ZHANG LIN
(#x2020;R&D Division of Shenyang Blower Works Group Corporation, Shenyang 110869, P. R. China)
- SUN QI
(#x2020;R&D Division of Shenyang Blower Works Group Corporation, Shenyang 110869, P. R. China)
Abstract
In the present study, the effects of carburization treatment on the microstructure and corrosion property of medium-carbon steels (40Cr) were investigated by means of X-ray diffraction (XRD), electron microprobe analyzer (EMPA), optical microscope (OM), scanning electron microscope (SEM), transmission electron microscope (TEM) and electrochemical corrosion, respectively. It was found that the microstructures beneath the surface were refined and a smooth transition microstructure from the surface to the core was observed in carburized samples. The fine plate-like but not granular carbide precipitation (Cr7C3) was observed in carburized sample by heat-treatment. The carburized specimens exhibited some effectiveness in the improvement of hardness and a smooth transition hardness profile. Corrosion resistance of 40Cr was improved by carburization treatment, resulting in the higher self-corrosion potential and the lower self-corrosion current density.
Suggested Citation
Deng Dewei & Niu Tingting & Liu Haiying & Zhang Lin & Sun Qi, 2016.
"Microstructure Evolution And Corrosion Property Of Medium-Carbon Alloy Steel After High-Temperature Carburization Process,"
Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 23(05), pages 1-9, October.
Handle:
RePEc:wsi:srlxxx:v:23:y:2016:i:05:n:s0218625x16500384
DOI: 10.1142/S0218625X16500384
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