Heat Treatment of Metal Surfaces by a Conformal Electron Beam
Author:
Liu Shengyi1, Dougal Roger A.1, Lyons Jed S.2
Affiliation:
1. Department of Electrical Engineering, University of South Carolina, Columbia, SC 29208 2. Department of Mechanical Engineering, University of South Carolina, Columbia, SC 29208
Abstract
The electron beam formed between a conformal plasma cathode and a metal workpiece can be used to heat treat the workpiece. Analyses of the electron energy deposition profiles, heat conduction rates, and austinitizing rates show that it is possible to heat the entire surface of an object to a depth of ∼1 mm within microseconds, to hold the temperature above the austinitizing critical point in the near-surface volume without melting the surface for milliseconds, and to self-quench rapidly. This leads to the prospect of surface hardening of metals by a conformal electron beam.
Publisher
ASME International
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference13 articles.
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