Fast neutron irradiation hardening of austenitic stainless steel at 250 CFunded under: FP2-FUSION 10C
Tensile specimens of solution annealed and cold-worked 316 and PCA type austenitic stainless steels were irradiated in the HFIR, HFR and R2 reactors to 3.1-10.9 dpa at 523 K. The yield stresses of solution annealed 316L and PCA reached a plateau level of about 820 MPa at 6 dpa. Earlier reported tensile curves are reviewed and analysed by their remaining homogeneous strain hardening. Radiation hardening of similar steels in cold-worked condition (20%CW 316 and 25%CW PCA) saturated at 1040 MPa. Uniform elongation of the annealed steels gradually decreased from 12% at 3.1 dpa to 3% at 10.9 dpa. The cold-worked steels lost their remaining strain hardening capability within 3 dpa. A tentative correlation between yield stress and uniform elongation suggests an upper yield stress limit of about 850 MPa to the occurrence of homogeneous plastic flow at 523 K.
Bibliographic Reference: Paper presented: International Conference on Fusion Reactor Materials (ICFRM-5), Oak Ridge National Laboratory, Clearwater (US), Nov. 17-22, 1991
Availability: Available from (1) as Paper EN 36642 ORA
Record Number: 199210373 / Last updated on: 1994-12-02
Original language: en
Available languages: en