Manufacturing Technology 2021, 21(2):184-192 | DOI: 10.21062/mft.2021.031

Evaluation of Structural and Mechanical Properties of the Nitrided Layer on Steel for Weapons

David Dobrocký1, Zdeněk Joska1, Jiří Procházka1, Emil Svoboda1, Petr Dostál2
1 Faculty of Military Technology, University of Defence in Brno. Kounicova 65, 662 10 Brno. Czech Republic
2 Faculty of AgriSciences, Mendel University in Brno. Zemědělská 1, 613 00 Brno. Czech Republic

Nitriding is a technology that leads to an increase in the utility value of the product. It’s most im-portant benefits include increased corrosion resistance, abrasion resistance, wear resistance, increased resistance to fatigue failure under cyclic loading, and many others. The design of a suitable nitriding technology not only on the basis of empirics requires a closer study of the relationship between the structure of the nitriding layer, its properties and the course of a particular degradation process. Be-cause the life of most components is related to abrasion on the surface, the occurrence of fatigue cracks and corrosion effects, it is crucial to influence the mechanical and other properties in this sur-face area. High functional requirements are placed on the functional surfaces of steels for weapons production, which lead to a long service life, reliability and dependability of the components of the weapon system and its safe use. The paper discuss the influence of selected nitriding technologies on the mechanical properties of steel 42CrMo4 and 34CrNiMo6, especially on the hard and microhard-ness of surface layers, change of its structure and next to change the surface texture and dimension of component. The steels were nitrided in plasma and gas. Nitriding in gas led to more significant struc-tural changes in the surface layer of both steels compared to plasma nitriding.

Keywords: Nitriding, Hardness, Microhardness, Texture, Dimension
Grants and funding:

Supported by the specific research project 2020 “SV20-216” at the Department of Mechanical Engineering, University of Defense in Brno and the Project for the Development of the Organization “DZRO K201”.

Received: November 3, 2020; Revised: February 11, 2021; Accepted: February 16, 2021; Prepublished online: March 22, 2021; Published: April 6, 2021  Show citation

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Dobrocký D, Joska Z, Procházka J, Svoboda E, Dostál P. Evaluation of Structural and Mechanical Properties of the Nitrided Layer on Steel for Weapons. Manufacturing Technology. 2021;21(2):184-192. doi: 10.21062/mft.2021.031.
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