Effect of laser quenching and subsequent heat treatment on the structure and wear resistance of a cemented steel 20KhN3A / Makarov A. V.,Korshunov L. G.,Malygina I. Yu.,Osintseva A. L. // PHYSICS OF METALS AND METALLOGRAPHY. - 2007. - V. 103, l. 5. - P. 507-518.

ISSN/EISSN:

0031-918X / нет данных

Type:

Article

Abstract:

The martensite - austenite structures that are formed under the action of continuous laser irradiation in the 20KhN3A steel subjected to various regimes of cementation have been studied by metallography, electron microscopy, and X-ray diffraction. It has been established that a decrease in the amount of retained austenite in the laser-quenched structures from 40 - 90 to 5 - 35 vol\% resulted from cold treatment at - 196 C exerts only a small (within 10\%) effect on the abrasive wear resistance of the cemented steel; the effect is negative upon microcutting and positive upon microscratching. An increase in the carbon concentration from 0.8 to 1.2 wt\% in the martensite - austenite structures that are formed in the cemented steel under the action of laser irradiation and upon cold treatment leads to changes in the abrasive wear resistance by no more than 10 - 13\%. The presence of 20 - 40 vol\% metastable retained austenite retards the decrease in the abrasive wear resistance of the quenched steel upon subsequent low-temperature tempering. It has been shown that the laser quenching and additional cold treatment positively affect the resistance of rolling bearing units of drill bits to contact-fatigue fracture.

Author keywords:

CARBON-STEELS; DEFORMATION; ALLOYS

DOI:

10.1134/S0031918X07050110

Web of Science ID:

ISI:000253318900011

Соавторы в МНС:

—

Другие поля

Поле	Значение
Month	MAY
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	CARBON-STEELS; DEFORMATION; ALLOYS
Research-Areas	Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Metallurgy \& Metallurgical Engineering
ResearcherID-Numbers	Makarov, Aleksey/D-5663-2016 Malygina, Irina/D-6043-2016 Osintseva, Alevtina/D-6050-2016 Korshunov, Lev/J-4288-2013
ORCID-Numbers	Makarov, Aleksey/0000-0002-2228-0643 Osintseva, Alevtina/0000-0003-0043-8435 Korshunov, Lev/0000-0002-1829-5658
Number-of-Cited-References	35
Usage-Count-Since-2013	1
Journal-ISO	Phys. Metals Metallogr.
Doc-Delivery-Number	264VQ