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Experimental Mechanics

, Volume 7, Issue 5, pp 193–201 | Cite as

Radiation effects on creep rupture and fatigue strength of pure aluminum

Purpose of investigation is to study experimentally the effect of nuclear radiation for the ratios of alternating stress to mean stress ranging from zero to infinity
  • S. Y. Zamrik
  • L. W. Hu
Article

Abstract

Paper describes an experimental investigation on the effect of nuclear radiation on the creep rupture and fatigue strength of pure aluminum for the ratios of alternating stress to mean stress ranging from zero to infinity. It was found that not only was the strength of the material tested affected by radiation over a range of ratios of stresses, but also the brittle-ductile transition was influenced.

Based upon the experimental results obtained, an analytical model was developed to correlate creep rupture, fatigue strength and radiation effect for various ratios of stresses. This information may prove to be valuable in dealing with the stress analysis of nuclear reactors.

Keywords

Radiation Aluminum Fatigue Mechanical Engineer Fluid Dynamics 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Nomenclature

σ

stress rupture, psi

σf

completely reversible stress, psi

σa

alternating fatigue stress, psi

σm

static mean stress, psi

t

time to rupture, hr

N

number of cycles to failure

Φ

integrated fast neutron flux, nvt

A

stress ratio =\(\frac{{\sigma _a }}{{\sigma _m }}\)

σmax

σ m + σ a , maximum stress, psi

σy

yield stress

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References

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    Wigner, E. P., “Theoretical Physics in the Metallurgical Laboratory of Chicago,”Jnl. Appl. Phys. 22,757 (1946).Google Scholar
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    ASTM Symposiums on Radiation, STP 208, 276, 314, 341, 380.Google Scholar
  3. 3.
    Remick, F. G., “A Unique Sub-Critical Reactor—Σ Pile,” The Pennsylvania State University, PSR 315-496018, (June 1961).Google Scholar
  4. 4.
    Shober, F. R. andMurr, W. E., “Radiation Induced Property Changes in AISI Type 347 Stainless Steel,”ASTM, STP 341, 325 (1963).Google Scholar
  5. 5.
    Piercy, G. R., “Irradiation Effects in Super Purity Aluminum Magnesium Alloys,” AEC of Canada Limited, Report No. CRMET-821, AECL No. 810, (1959).Google Scholar
  6. 6.
    Wilson, T. C. andBerggren, R. G., “Effects of Neutron Irradiation in Steel,”Proc. ASTM,55,689, (1955).Google Scholar
  7. 7.
    Lazan, B. J. and Blatherwick, A. A., “Strength Properties of Rolled Aluminum Alloys under Various Combinations of Alternating and Mean Axial Fatigue Stresses,” Proc. ASTM, 856–869 (1953).Google Scholar

Copyright information

© Society for Experimental Mechanics, Inc. 1967

Authors and Affiliations

  • S. Y. Zamrik
    • 1
  • L. W. Hu
    • 1
  1. 1.Department of Engineering MechanicsThe Pennsylvania State UniversityUniversity Park

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