MATEC Web Conf.
Volume 297, 2019X International Scientific and Practical Conference “Innovations in Mechanical Engineering” (ISPCIME-2019)
|Number of page(s)||6|
|Section||The Strengthening Technologies and Functional Coverings|
|Published online||13 November 2019|
Expanding Technological Capabilities of The Combined Hardening of Steel by Deformation
Bryansk State Technical University, 7, 50 let Octyabrya Blvd, Bryansk, 241035, the Russian Federation
2 Murom Institute of Vladimir State University, 23, Orlovskaya street, 602264, Myrom, the Russian Federation
* Corresponding author: email@example.com
The technology of wave deformation hardening of metal machine parts is described, which allows obtaining a hardened surface layer up to 10 mm deep. The article presents the results of studying the microstructure and hardness of the samples strengthened as a result of chemical heat treatment and combined hardening consisting of preliminary wave deformation hardening and subsequent chemical heat treatment of structural alloyed steel 15CrС2Ni2Mg. It is established that a preliminary impact on the cemented material by a deformation wave contributes to creating uniformly high packing density of martensite, as well as smaller sizes of martensite needles in the subsurface layer and at the border of the cemented layer, in the core of the sample and contributes to the absence of large-needle martensite. Applying this technology allows forming a high uniform hardness at 65 HRC at a depth of 1.5 mm, with its gradual reduction to the core of the sample, while maintaining a high level of toughness. The results obtained allow recommending wave deformation hardening and the combined technology based on it to improve the performance properties of variable machine parts that operate under the conditions of sliding friction and impact loads.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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