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Academic Journal
Effect of electrolyte-plasma surface hardening on structure wheel steel 2
Б.К. Рахадилов, Е.Е. Табиева, Г.К. Уазырханова, Л.Г. Журерова, Н.А. Попова
Қарағанды университетінің хабаршысы. Физика сериясы, Vol 98, Iss 2 (2020)
Sparad:
| Titel | Effect of electrolyte-plasma surface hardening on structure wheel steel 2 |
|---|---|
| Författarna | Б.К. Рахадилов, Е.Е. Табиева, Г.К. Уазырханова, Л.Г. Журерова, Н.А. Попова |
| Utgivningsår |
2020
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| Källa |
Қарағанды университетінің хабаршысы. Физика сериясы, Vol 98, Iss 2 (2020)
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| Beskrivning |
This paper examines the influence of electrolyte-plasma surface hardening on the structure and microhardness of wheel steel mark 2. In the work electrolyte-plasma surface hardening was carried out in an electrolyte made from an aqueous solution 10 % carbamide (NH2)2CO 20 % sodium carbonate Na2CO3. The processing time was 2 seconds, Tmax = 850–900 ºC; U= 320V; I=40A. According to the results of the scanning transmission electron microscopy, the electrolyte-plasma surface hardening caused a change in the morphological constituents of mark 2 steel. In the initial state, the matrix of steel is a α-phase, the morphological components of which are fragmented ferrite, unfragmented ferrite and pearlite. After electrolytic-plasma surface hardening, a batch, high-temperature plate and low-temperature plate martensit is formed on the surface of the sample. Investigations have been carried out on microhardness determination on cross-section of wheel steel samples after quenching in aqueous solution of electrolyte. It is found that after electrolytic-plasma surface hardening, the microhardening values of this hardened surface layer increased ~ 3 times compared to the steel matrix, and the thickness of the hardened layer is 1000–1500 microns.
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| Dokumenttyp |
article
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| Språk |
English
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| Information om utgivare |
Academician Ye.A. Buketov Karaganda University, 2020.
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| Ämnestermer | |
