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Advances in Understanding and Predicting Inelastic Deformation in Zircaloy / S. Oldberg, AK. Miller, GE. Lucas

Conference Author
Zirconium in the Nuclear Industry (1978 : Stratford-upon-Avon, England)
Physical Description
1 online resource (20 pages) : illustrations, figures, tables
Additional Creators
Lucas, GE., Miller, AK., Oldberg, S., American Society for Testing and Materials, and ASTM International
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Summary
The mathematical model MATMOD-Z has been built to permit computer simulation of in-reactor Zircaloy deformation behavior. The 250 to 450¿̐ưC temperature range is covered together with a wide range of possible strain rates, accrued strains, and as-fabricated material conditions. MATMOD-Z is comprised of coupled time-rate equations in stress, strain, temperature, fast neutron flux, and certain material state variables. These latter quantities are: Fdef, representing the friction stress due to isotropic deformation-induced obstacles; Fsol, representing the friction stress due to solute drag; R, the ¿̐ưrest stress,¿̐ư or back stress due to directional obstacles; and f2, the Kearns texture number in the direction bisecting the basal pole intensity peaks. Comparison of MATMOD-Z predictions to independent test data indicate a distribution of errors in predicted stress given complex strain-time-temperature history with standard deviation of the order of 17 percent. The most important source of error is thought to lie in an effect not treated in the current model, namely, increased solute drag with increasing dislocation density.
Dates of Publication and/or Sequential Designation
Volume 1979, Issue 681 (January 1979)
Subject(s)
Other Subject(s)
ISBN
0803106017
9780803106017
9780803147492 (e-ISBN)
Digital File Characteristics
text file PDF
Bibliography Note
Includes bibliographical references 32.
Other Forms
Also available in PDF edition.
Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
Full text article also available for purchase.
Reproduction Note
Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1979. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
Technical Details
Mode of access: World Wide Web.
Source of Acquisition
ASTM International PDF Purchase price USD25.
View MARC record | catkey: 27988174