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Abstract

The effects of strain rate (10**-2 to +- 10**3 s**-1) are reported on the mechanical properties at high temperature (400, 500, 550 degrees C) of the austenitic stainless steel AISI 316L irradiated to 9.2 displacements per atom (dpa) at a temperature of 500 degrees C in sodium. The main effects consist in: + a softening effect which appears at large deformations and at medium strain rate (+- 10 s**-1); + reduction of ductility when strain rate increases from low (10**-2 s**-1) to medium strain rate; + disappearance of both these effects at high strain rate (+- 600 s**-1). The comparison of the mechanical properties of the same material irradiated to 2.2 dpa and to 9.2 dpa revealed that while the static strength properties were practically unaffected by the increase dose, the dynamic softening at large deformations and the reduction of ductility at medium strain rate were enhanced.

Additional information

Authors: ALBERTINI C, JRC ISPRA ESTAB. (ITALY);DEL GRANDE A, JRC ISPRA ESTAB. (ITALY);MONTAGNANI M JRC ISPRA ESTAB. (ITALY), JRC ISPRA ESTAB. (ITALY)
Bibliographic Reference: 12TH INTERNATIONAL SYMPOSIUM ON EFFECTS OF RADIATION ON MATERIALS, WILLIAMSBURG, VIRGINIA (USA), JUNE 18-20, 1984 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 31463 ORA
Availability: Can be ordered online
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