Detail publikace

Surface property control by electron beam deflection during hardening

MATLÁK, J. DLOUHÝ, I.

Originální název

Surface property control by electron beam deflection during hardening

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

The usage of the high-energy electron beam source enables repeated surface quenching of chosen locations of an engineering part surface. Different techniques of electron beam deflection allow creating hardened layers of different shapes, hardness levels and thicknesses. Experiments were carried out with 42CrMo4 (1.7225) steel. The deflection modes tested were one-point, 6-point, line, field, and meander. The influence of process speed and defocusing of the electron beam was also taken into account. The electron beam surface quenching resulted in a very fine martensitic microstructure with a hardness of over 700 HV0.5. The thickness of the hardened layers depends on the deflection mode and is affected directly (except field deflection) by process speed. The maximum hardened depth (NCHD) was 1.49 mm. Electron beam defocusing affects the width of the hardened track and can cause extension of the trace up to 40%. The hardness values continuously decrease from the surface to the material core.

Klíčová slova

Electron beam, surface hardening, 42CrMo4 steel, beam deflection

Autoři

MATLÁK, J.; DLOUHÝ, I.

Vydáno

13. 1. 2018

Nakladatel

Materials Engineering - Materiálové inžinierstvo

Místo

University of Žilina, Slovakia

ISSN

1335-0803

Periodikum

Materiálové inžinierstvo

Ročník

24

Číslo

4

Stát

Slovenská republika

Strany od

124

Strany do

130

Strany počet

7

URL

http://ojs.mateng.sk/index.php/Mateng/article/view/224/433

BibTex

@article{BUT148913,
  author="Jiří {Matlák} and Ivo {Dlouhý}",
  title="Surface property control by electron beam deflection during hardening",
  journal="Materiálové inžinierstvo",
  year="2018",
  volume="24",
  number="4",
  pages="124--130",
  issn="1335-0803",
  url="http://ojs.mateng.sk/index.php/Mateng/article/view/224/433"
}