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Abstract

The effect of specimen thickness on the effective ductility in tensile tests is discussed in relation to experimental results for solution annealed Type 316 obtained from thin specimens typical of those used in fusion reactor materials irradiation studies. A sharp reduction in elongation is noted in specimens of thickness below approximately 0.25 mm, and may be attributed to the increasing influence of edge flaws leading to premature failure. This would not necessarily be anticipated on purely theoretical grounds since necking of the specimen should result in higher stresses at the centre than at the edge. Criticism of a previous interpretation of the ductility loss as a function of specimen thickness is shown not to be justified in the light of the existing experimental data.

Additional information

Authors: RICKERBY D G, JRC ISPRA ESTAB. (ITALY);FENICI P JRC ISPRA ESTAB. (ITALY), JRC ISPRA ESTAB. (ITALY)
Bibliographic Reference: NUCLEAR ENGINEERING AND DESIGN FUSION, VOL. 3 (1986), PP. 423-424
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