Investigation of possibilities to harden thin-wall elements of flying vehicles by surface plastic deformation

Аuthors

Komkov V. A.^*, Kokoreva O. G., Kursakov A. V.^**

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

*e-mail: vakomkov@gmail.com
**e-mail: alexey-kursakov@mail.ru

Abstract

The paper presents the results of flying vehicles high-ratethin-walled elements surfaces hardening by surface plastic deformation.

Investigations of mechanical-and-physical properties of metal surface layerat hardening by surface deformation were carried out.

The depth of hardened layer under optimal surface processing rates by hardening with surface plastic deformation.

We establish the relationship between quality characteristic of surface layer with endurance and durability of machine component parts, and performed their quantitative assessment.

Investigations were carried out and positive results were obtained, which allow manufacturing application methods of hardening by plastic deformation for a number of critical parts. These investigations included pilot parts hardening under different modes in laboratory conditions with bench testing and machines with pulsators to compare these parts endurances, as well as under manufacturing conditions with carrying out appropriate comparison performance test ofendurance.

Keywords:

high-rate surfaces of flying vehicles elements, dynamic loads, microstructure, dislocations, hardening, surface’ layer quality characteristics, plastic surface deformation, residual stresses, durability

References

1. Gubkin S.I. Plasticheskaya deformatsiya metalla (Plastic deformation of metals), Moscow, Metallurgizdat, 1961, 306 p.

2. Ivanova V.S., Gordienko L.K., Geminov V.N. Rol dislokatsii v uprochneniii razrushenii metallov (The role of dislocations in metalshardening and fracture), Moscow, Nauka, 1965, 180 p.

3. Zobnin N.P. Uprochnenie detalei mashin mekhanicheskim naklepyvaniem (Hardening ofmachine parts bystrain- hardening), Moscow, Nauka, 1965, 287 р.