Plasma Electrolytic Cementation of 0.3C-1Cr-1Mn-1Si-Fe Steel

Zarina A. Satbayeva, Laila Gylymmeddenovna Zhurerova, Erkezhan Erkinbekkyzy Tabieva

2020

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DOI 10.4028/www.scientific.net/kem.839.196
Data confidence 70 medium
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Abstract

This work is devoted to research of the structural-phase condition and changes in the mechano-tribological properties of 0.3C-1Cr-1Mn-1Si-Fe structural steel after plasma electrolytic cementation. Using metallographic and X-ray analysis, mechano-tribological tests, it was found that 0.3C-1Cr-1Mn-1Si-Fe steel in the initial state belongs to the ferritic-pearlitic class, which contains ~ 65% of pearlite grain and 35% of ferrite grain. When samples of 30HGSA steel are saturated with carbon, a modified surface layer with a thickness of 25μm is formed on the surface of the studied samples, including α-Fe ferrite, cementite Fe3C, iron Fe3C2 carbide and an alloying element. It was established that the intensity of wear of the samples after modifying decreased by 2 times, and the surface microhardness after cementation increased 3 times, depending on the original sample.