Effect of frictional treatment and low temperature plasma carburizing on the microhardness and electromagnetic characteristics of metastable austenitic steel-Reference-Cited by-同舟云学术

Effect of frictional treatment and low temperature plasma carburizing on the microhardness and electromagnetic characteristics of metastable austenitic steel

Published:2023-08-01 Issue:8 Volume:124 Page:748-755
ISSN:0015-3230
Container-title:Физика металлов и металловедение
language:
Short-container-title:Fizika metallov i metallovedenie

Author:

Savrai R. A.¹,Skorynina P. A.¹,Makarov A. V.¹²,Kogan L. Kh.²,Menshakov A. I.³⁴

Affiliation:

1. Institute of Engineering Science, Ural Branch of the Russian Academy of Sciences

2. Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences

3. The Institute of Electrophysics of the Ural Branch of the Russian Academy of Sciences Ekaterinburg

4. Ural Federal University

Abstract

Microhardness and electromagnetic characteristics of corrosion-resistant chromium-nickel (wt. %: 16.80 Cr; 8.44 Ni) austenitic steel subjected to electron beam plasma carburizing at temperatures of 350 and 500°C, frictional treatment with a sliding indenter and combined treatments, including frictional treatment and plasma carburizing have been investigated. It has been found that plasma carburizing increases the microhardness of the steel surface from 200 to 1100 HV0.025. The total hardening depth was 25 microns after carburizing at T = 350°C and 300 microns after carburizing at T = 500°C. Frictional treatment increases the microhardness of the steel to 600 HV0.025 with a total hardening depth of 500 microns. It has been shown that the diffusion-active layer with a dispersed structure formed during preliminary frictional treatment contributes to additional hardening of the steel (up to 1275 HV0.025) during subsequent low-temperature (350°C) carburizing. Combined treatment with carburizing at a temperature of 500 °C increases the microhardness of the steel to 820 HV0.025, and the total hardening depth is 500 microns for both combined treatments. It has also been found that plasma carburizing of the steel leads to a decrease in the eddy-current readings compared to the quenched steel and their growth compared to the steel subjected to frictional treatment, which can be used to develop quality control techniques for such treatments.

Publisher

The Russian Academy of Sciences

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