Abstract
Stress relaxation measurements at 773 and 823 K in bending and for different initial stresses in type AISI 304 stainless steel are reported. Several thermal treatments were given to the specimens prior to the relaxation testing. The data are fitted to a general equation that describes thermally activated dislocation motion and it is shown that, in some cases, the internal stress changes with the applied stress. No substantial differences were found in the stress relaxation behaviour on changing the thermal treatment. This is attributed to the influence of dynamic strain ageing; an equation which can be used to describe experimental log stress against log strain rate curves is presented.
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References
J. N. Conway, R. H. Stentz and J. T. Berling, “Fatigue, Tensile and Relaxation Behaviour of Stainless Steels”, US Atomic Energy Commission Report TID-26135 (1975).
R. W. Rhode and J. C. Swearengen, in Transactions of the Fourth International Conference on Structural Mechanics in Reactor Technology, Vol. L edited by A. Jaeger and B. A. Boley (North-Holland, Amsterdam, 1977) p. 85.
J. B. Conway, “An Analysis of the Relaxation Behaviour of AISI 304 and 316 Stainless Steel at Elevated Temperature”, US Atomic Energy Commission Report GEMP-730 (General Electric Company, 1969).
E. W. Hart, Trans. J. Engng Mater. Tech.98 (1976) 193.
E. W. Hart, in Transactions of the Fourth International Conference on Structural Mechanics in Reactor Technology, Vol L, edited by A. Jaeger and B. A. Boley (North-Holland, Amsterdam, 1977) p. 1/1.
H. Yamada and Che-Yu Li, Metall. Trans.4 (1973) 2133.
J. F. Thomas Jr. and F. L. Yaggee, ibid.6A (1975) 1835.
G. L. Wire, F. V. Ellis and Che-Yu Li, Acta Metall24 (1976) 677.
Che-Yu Li, F. V. Ellis and F. H. Huang, in “Alloys and Microstructural Design”, edited by J. K. Tien and G. S. Ansell (Academic, New York, 1976) p. 403.
N. Nir, F. H. Huang, E. W. Hart and Che-Yu Li, Metall. Trans.8A (1977) 583.
F. H. Huang, F, V. Ellis and Che-Yu Li, ibid.8A (1977) 699.
H. Yamada, Scripta Metall.11 (1977) 321.
F. H. Huang, H. Yamada and Che-Yu Li, in Proceedings of the Fifth International Conference on Materials Technology, Sao Paulo (1978) p. 83.
M. J. Anciaux, Metall. Trans.12A (1981) 1981.
F. Povolo and R. J. Tinivella, J. Mater. Sci.19 (1984) 2373.
Idem, ibid.19 (1984) 1851.
D. E. Fraser, P. A. Ross-Ross and A. R. Causey, J. Nucl. Mater.46 (1973) 281.
F. Povolo and E. H. Toscano, ibid.74 (1978) 76.
Idem, ibid.78 (1978) 217.
L. D. Blackburn, in “The Generation of Isochronous Stress Strain Curves”, Proceedings of the ASME Winter Annual Meeting, New York, November, 1972 (ASME, New York).
F. Povolo and J. F. Reggiardo, J. Mater. Sci.23 (1988) 241.
W. G. Johnston and J. J. Gilman, J. Appl. Phys.30 (1959) 139.
F. Povolo and G. H. Rubiolo, Phil Mag.A56 (1987) 209.
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Povolo, F., Tinivella, R.J., Reggiardo, J.F. et al. Stress relaxation in bending of type AISI304 stainless steel at 773 and 823 K. J Mater Sci 27, 1505–1513 (1992). https://doi.org/10.1007/BF00542911
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DOI: https://doi.org/10.1007/BF00542911