Accession Number : AD0656578

Title :   IRRADIATION EFFECTS ON REACTOR STRUCTURAL MATERIALS.

Descriptive Note : Quarterly progress rept. 1 Feb-30 Apr 67,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Hawthorne,J. R. ; Serpan,C. Z. , Jr. ; Watson,H. E. ; Gray,R. A. , Jr

Report Date : 15 MAY 1967

Pagination or Media Count : 62

Abstract : The report includes the following: (1) a comparison of the response of selected structural steels to irradiation at 550 and 650F to high neutron fluences, (2) the through-thickness Charpy-V notch ductility performance of a 10-1/2-in.-thick plate of irradiated A302-B steel, (3) an investigation of the effects of oxygen and nitrogen contents on the radiation embrittlement sensitivity of 7-1/2Ni-Cr-Mo steel at 250F, (4) the notch ductility behavior of irradiated 12Ni-5Cr-3Mo maraging steel weldments, (5) the response of A350-LF1 (Modified) steel to postirradiation annealing at temperatures in the range of 550 to 590F, (6) the notch ductility behavior of A350-LF1 (Modified) steel with cyclic 430F irradiation-168 hour annealing, (7) the preirradiation mechanical properties of the MH-1A reactor pressure vessel steel, (8) the notch ductility of several reactor structural steels after irradiation in a heavy water moderated reactor, (9) the modification, installation, and initial operation of a remotely operated, tape-controlled milling machine, and (10) a description of newly acquired remotely operated precision measuring equipment. (Author)

Descriptors :   (*REACTOR MATERIALS, *DAMAGE), (*STEEL, DAMAGE), NEUTRON REACTIONS, METAL PLATES, DUCTILITY, MARAGING STEELS, EMBRITTLEMENT, NOTCH SENSITIVITY, WELDS, ANNEALING, PRESSURE VESSELS, MILLING MACHINES, AUTOMATIC, TEST EQUIPMENT, REMOTE CONTROL, ELECTRIC POWER PRODUCTION, NUCLEAR REACTORS, PRESSURIZED WATER REACTORS, HEAVY WATER REACTORS, (U)HEAVY WATER REACTORS

Subject Categories : Metallurgy and Metallography
      Fission Reactor Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE