ASTM_DS54-1974.pdf

RADIATION EFFECTS INFORMATION GENERATED ON THE ASTM REFERENCE CORRELATION-MONITOR STEELS Sponsored by ASTM Committee E-10 on Radioisotopes and Radiation Effects AMERICAN SOCIETY FOR TESTING AND MATERIALS ASTM DATA SERIES PUBLICATION DS 54 Prepared by J.R.Hawthorne List price$9.75 05-054000-35 AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race Street,Philadelphia,Pa.19103 by American Society for Testing and Materials 1974 Library of Congress Catalog Card Number:74-79014 NOTE The Society is not responsible,as a body,for the statements and opinions advanced in this publication.Printed in Baltimore,Md.July 1974 Foreword This volume is yet another splendid example of scientific and engineering progress that can be achieved through voluntary cooperation.It is typical of the programs conducted under the auspices of ASTM which lead to the world respected voluntary consensus ASTM standards.ASTM Committee E-10 on Radioisotopes and Radiation Effects is com-mended for developing this program,conducting the surveillance,and compiling the resulting data.The information generated from the continuing monitoring of the effects of radiation on reference steels is of immense value to those who must design and operate nuclear reactors.The foresight of the committee in developing such cooperative research points the way to the solution of the worlds energy problems.W.T.Cavanaugh Managing Director,ASTM Related ASTM Publications Analysis of Reactor Vessel Radiation Effects Sur-veillance Programs,STP 481(1970),$26.00(04481000-35)Irradiation Effects on Structural Alloys for Nuclear Reactor Applications,STP 484(1971),$49.25(04484000-35)Effects of Radiation on Substructure and Mechanical Properties of Metals and Alloys,STP 529(1973),$49.50(04-529000-35)Contents Introduction Materials 2 Survey of Materials Distribution 18 Survey of Material Usage 22 Postirradiation PropertiesTrend Determinations 24 Tensile Properties 24 Charpy V-Notch Ductility 54 Drop Weight Nil Ductility Transition(NDT)Temperature 56 Dynamic Tear(DT)Performance 56 Postirradiation Annealing Response 58 Postirradiation Data Survey and Tabulation 58 Summary and Conclusions 75 Acknowledgments 76 /.R.Hawthorne 1 Radiation Effects Information Generated on the ASTM Reference Correlation-Monitor Steels REFERENCE:Hawthorne,J.R.,Radiation Effects Information Generated on the ASTM Reference Correlation-Monitor Steels,ASTM DS 54,American Society for Testing and Materials,1974.ABSTRACT:A survey is made of radiation effects information generated on the fust four correlation-monitor materials provided by ASTM to radiation research and reactor surveillance programs.The survey was performed for Subcommittee 2 of ASTM Committee E-10 on Radiation Effects and includes a review of the worldwide distribution and use of the reference materials since 1960.The reference plates were those originally donated to ASTM by the U.S.Steel Corporation.Individual plates are identified as 6-in.A302-B steel,4-in.A212-B steel,3-in.Ni-Cr-Mo(HY-80)steel,and 2-in.T-l steel.The report presents extensive tabulations of data as provided by the recipient laboratories.In addition,trends in radiation effects behavior with respect to tensile properties,Charpy-V(Cv)notch ductility properties and postirradiation annealing response are identified and discussed.Nil-ductility transition(NDT)temperature behavior and dynamic tear(DT)test perform-ance relative to Cv behavior are also identified for the A302-B and A212-B reference plates.The report is intended as a reference document for the evaluation and analysis of data developed by on-going reactor vessel surveillance programs and a source for data and data trends by which to assess the performance of new structural steels and to compare the effects of diverse reactor environments.KEY WORDS:radiation effects,steels,evaluation,structural steels,pressure vessels,reactors,neutron irradiation,thermal reactors(nuclear)Introduction The progressive increase in strength and reduction in notch ductility of low-alloy steels as a result of neutron exposure are now well recognized nuclear service phenomena.Substantial progress has also been made toward the understanding and the prediction of irradiation effects to such steels.The ASTM Metallurgist,Reactor Materials Branch,Naval Research Laboratory,Washington,D.C.20375.DS54-EB/Jul.1974Copyright 1974 by ASTM International www.astm.org 2 RADIATION EFFECTS INFORMATION recognition,a decade ago,of the need for incorporating a few,well-documented reference steels in radiation research and power reactor surveillance programs undoubtably contributed to this technical progress.Such recognition stemmed from the dual concern for variable radiation embrittlement behavior among steels and for the potential for(and extent of)radiation response variations with differing nuclear environment conditions(flux intensity,neutron spectrum).An additional concern was the proper definition of the nuclear environment with respect to the significant,that