THE EFFECT OF NEUTRON IRRADIATION ON THE CHARPY V AND DROP-WEIGHT TEST TRANSITION TEMPERATURES OF VARIOUS STEELS AND WELD METALS
Charpy V-notch and drop-weight specimens were used to determine changes in transition temperature for various steels and weld metals irradiated in different nuclear and thermal environments to integrated fast-neutron-flux exposures to 1 x 10/sup 19/ NVT (>1.0 Mev). Irradiations to integrated fast- neutron flux levels of 5 x 10/sup 18/ NVT effected 40 to 100 tained F shifts in transition temperatures. Increasing the irradiation temperature from 200 to 575 tained F significantly decreased the radiation-induced damage. Transitiontemperature shifts in the order of 250 tained F were developed for materials irradiated at temperatures less than 200 tained F to an integrated fast-neutron flux dosage of 1 x 10/sup 19/ NVT. Post-irradiation heat treatment revealed that recovery of properties may be obtained by 650 tained F annealing. Comparison of Charpy V and drop-weight nil-ductility transition temperature shifts for 17 material irradiations demonstrated excellent correspondence in the evaluation of irradiation effects by these two test methods. (auth)
- Research Organization:
- Naval Research Lab., Washington, D.C.
- NSA Number:
- NSA-14-019513
- OSTI ID:
- 4163751
- Report Number(s):
- NRL-5479; NS-021-300
- Resource Relation:
- Other Information: Project Nos. RR-007-01-42-5409; NS-021-300. Orig. Receipt Date: 31-DEC-60
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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