Mechanism of the HIP bonding of Zircaloy-4 in the alpha-phase field

Hill, P. S., Todd, R. I. and Ridley, N. (2003). Mechanism of the HIP bonding of Zircaloy-4 in the alpha-phase field. In: A. E. Tekkaya and J. M. Allwood, Journal of Materials Processing Technology. International Conference on Research and Development in Net-Shape Manufacturing, Birmingham, U.K., (131-136). 9-11 April 2001. doi:10.1016/S0924-0136(02)00854-3


Author Hill, P. S.
Todd, R. I.
Ridley, N.
Title of paper Mechanism of the HIP bonding of Zircaloy-4 in the alpha-phase field
Conference name International Conference on Research and Development in Net-Shape Manufacturing
Conference location Birmingham, U.K.
Conference dates 9-11 April 2001
Proceedings title Journal of Materials Processing Technology   Check publisher's open access policy
Journal name Journal of Materials Processing Technology   Check publisher's open access policy
Place of Publication Amsterdam, The Netherlands; New York, U.S.A.
Publication Year 2003
Sub-type Fully published paper
DOI 10.1016/S0924-0136(02)00854-3
ISSN 0924-0136
Editor A. E. Tekkaya
J. M. Allwood
Volume 135
Issue 2-3
Start page 131
End page 136
Total pages 6
Language eng
Abstract/Summary The HIP bonding of as-received annealed Zircaloy-4 sheet of relatively large grain size has been investigated at elevated temperatures (770-810 degreesC) in the alpha-phase field. Studies of plastic flow behaviour showed that the material had a constant strain rate sensitivity of flow stress, m similar to 0.2, (n similar to 5) over a wide range of strain rates. The activation energy over this temperature range was consistent with power law creep as the rate controlling process for deformation. Bonding studies at 800 degreesC showed that interface void closure occurred by constrained plastic collapse and diffusion. The progressive increase of plastic constraint during void closure led to a dominance of diffusion. When the constraint of inter-void ligaments was introduced into an earlier model, this gave an improved agreement between prediction and experiment for diffusion bonding (DB) of the alpha-phase. (C) 2002 Elsevier Science B.V. All rights reserved.
Subjects 0912 Materials Engineering
Keyword Zircaloy-4
Alpha-zirconium
Power law creep
HIP bonding
Diffusion
Bonding (DB)
Modelling
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown

 
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Created: Fri, 21 Sep 2007, 10:50:28 EST