Plasma assisted heat treatment: annealing

This work comprises a new dc plasma application in the metallurgical-mechanical field, called plasma assisted heat treatment, and it presents the first results for annealing. Annealing treatments were performed in 90% reduction cold-rolled niobium samples at 900 deg C and 60 min, in two different he...

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Bibliographic Details
Published in:Journal of physics. D, Applied physics Applied physics, 2009-03, Vol.42 (5), p.052003-052003 (4)
Main Authors: Brunatto, S F, Guimarães, N V
Format: Article
Language:English
Subjects:
Cold working, work hardening
annealing, quenching, tempering, recovery, and recrystallization
textures
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Physics
Treatment of materials and its effects on microstructure and properties
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Summary:This work comprises a new dc plasma application in the metallurgical-mechanical field, called plasma assisted heat treatment, and it presents the first results for annealing. Annealing treatments were performed in 90% reduction cold-rolled niobium samples at 900 deg C and 60 min, in two different heating ways: (a) in a hollow cathode discharge (HCD) configuration and (b) in a plasma oven configuration. The evolution of the samples' recrystallization was determined by means of the microstructure, microhardness and softening rate characterization. The results indicate that plasma species (ions and neutrals) bombardment in HCD plays an important role in the recrystallization process activation and could lead to technological and economical advantages considering the metallic materials' heat treatment application.
ISSN:0022-3727
1361-6463
DOI:10.1088/0022-3727/42/5/052003