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Актуальные проблемы в машиностроении
. Том 4. № 2. 2017
Материаловедение
в машиностроении
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STRUCTURE, PHYSICAL AND MECHANICAL PROPERTIES OF AUSTENITIC STEEL
10X17H13M2T PROCESSED BY NITROGEN IONS
Kukareko V.A.
,
D.Sc. (Physical-Mathematics), Associate Professor,
e-mail:
v_kukareko@mail.ruThe State Scientific Institution “Joint Institute of Mechanical Engineering of the National Academy
of Sciences of Belarus”, 12 Akademicheskaya str., Minsk, 220072, Republic of Belarus
Abstract
The structure of austenitic steel 10X17H13M2T subjected to ion-beam nitriding in the
temperature range of 620-870 K was investigated. It was found that the ion-beam treatment is
accompanied by the formation of nanosized chromium nitride CrN particles and ferromagnetic α-Fe
in the surface layers contributing to a significant strengthening of the nitride layer and giving it
ferromagnetic properties. It was shown that the change in ion-beam nitriding regimes can ensure the
formation of the modified layer with required microhardness, wear resistance and magnetic
properties. The optimum temperature range of ion-beam treatment for obtaining the highest
microhardness of the 10X17H13M2T steel surface is 720-770 K. The maximum of magnetic
penetrability of the nitrided layer is achieved after ion-beam treatment at 670-720 K, while the
maximum of coercive force is obtained after ion nitriding at 770-820 K. The highest wear resistance
of the surface layers of the 10X17H13M2T steel is obtained after ion-beam treatment at 720-870 K.
Keywords
austenitic steel, ion-beam nitriding phase composition, magnetic properties, microhardness, wear
resistance