_STP_370-1965.pdf

STRUCTURE AND PROPERTIESOF ULTRAHIGH-STRENGTHSTEELSA symposium sponsored by theMETALLURGICAL SOCIETY OF AIME and theAMERICAN SOCIETY FOR TESTING AND MATERIALSCleveland,Ohio,Oct.22,1963Price$11.00;to Members$7.70Published by theAMERICAN SOCIETY FOR TESTING AND MATERIALS1916 Race St.,Philadelphia 3,Pa.Reg.U.S.Pat.Off.ASTM Special Technical Publication No.370Copyright by ASTM Intl(all rights reserved);Mon Dec 7 13:15:25 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.by American Society for Testing and Materials 1965Printed in Baltimore,Md.March,1965Copyright by ASTM Intl(all rights reserved);Mon Dec 7 13:15:25 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.FOREWORDThe papers in this volume were presented at a Symposium on Steels WithYield Strengths Over 200,000 psi sponsored by the Panel on StructuralMaterials for Airframes and Missiles of the ASTM-ASME Joint Committeeon Effect of Temperature on the Properties of Metals,and the StructuralMaterials Committee,Institute of Metals,Metallurgical Society of AIME.The Symposium was held on Oct.22,1963,in Cleveland,Ohio.F.M.Richmond,of Universal-Cyclops Steel Corp.,and J.W.Welty,ofSolar Aircraft Co.,were the chairmen of the morning session.E.E.Reyn-olds,of Allegheny Ludlum Steel Corp.,and J.J.Heger,of U.S.Steel Corp.,presided over the afternoon session.iiiCopyright by ASTM Intl(all rights reserved);Mon Dec 7 13:15:25 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.NOTEThe Society is not responsible,as a body,for the statementsand opinions advanced in this publication.Copyright by ASTM Intl(all rights reserved);Mon Dec 7 13:15:25 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.CONTENTSPAGEIntroduction 1Relationships Between Microstructure and Toughness in Quenched and TemperedUltrahigh-Strength SteelsA.J.Baker,F.J.Lauta,and R.P.Wei 3Discussion 23Relationships Between Structure and Properties in the 9Ni-4Co Alloy SystemJ.S.Pascover and S.J.Matas 30Discussion 45High-Strength Stainless Steels by Deformation at Room TemperatureS.Floreenand C.R.Mayne 47An Evaluation of the 18Ni-9Co-5Mo Maraging Steel SheetD.L.Corn 54The Metallurgy and Properties of Cold-Rolled Am-350 and Am-355 SteelsT.H.McCunn,G.N.Aggen,and R.A.Lula 78Discussion 93Fracture Micromechanics in High-Strength SteelsBani R.Banerjee 94Discussion 116The Effect of Solidification Practice on the Properties of High-Strength SteelsC.M.Carman,R.W.Strachan,D.F.Armiento,and H.Markus 121Discussion 143High-Strength Steel ForgingsH.J.Henning 147Ausform Fabrication and Properties of High-Strength Alloy SteelW.W.Ger-berich,A.J.Williams,C.F.Martin,and R.E.Heise 154Thermomechanical Treatments Applied to Ultrahigh-Strength BainitesD.Kalish,S.A.Kulin,and M.Cohen 172Discussion 205Ultrahigh-Strength Steel FastenersA.C.Hood and R.L.Sproat 208Discussion 220VCopyright by ASTM Intl(all rights reserved);Mon Dec 7 13:15:25 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.RELATED ASTM PUBLICATIONSProperties of Basic Oxygen and Open Hearth Steels,STP 364(1963).Stress Corrosion Cracking of Austenitic Chromium-Nickel Stainless Steels,STP 264(1960).Chemical Composition and Rupture Strengths of Super-Strength Alloys,STP 170-C(1964).viCopyright by ASTM Intl(all rights reserved);Mon Dec 7 13:15:25 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.STRUCTURE AND PROPERTIES OF ULTRAHIGH-STRENGTH STEELSINTRODUCTIONThe increasing demands of the militaryfor improved performance of structuralmaterials for space,land,and deep oceanenvironments has resulted in an intensiveactivity in the development,evaluation,and prototype testing of a broad rangeof materials including oxides,carbides,aluminum,titanium,and even gold.Asignificant portion of this activity hasbeen devoted to high-strength steels.Recognizing the scope of this activityand the need to assemble into one semi-nar the more recent advances in thedevelopment and application of high-strength steels,the Panel on StructuralMaterials for Airframes and Missilesof the Joint Committee of ASTM andASME,and the Structural MaterialsCommittee of the Institute of MetalsDivision of the Metallurgical Societyof AIME,organized this Symposiumon Steels With Yield Strengths Over200,000 psi.Until recently,steels having yieldstrengths in excess of 200,000 psi werenot considered suitable as materials ofconstruction,because fabrication andinspection techniques were not suffi-ciently sophisticated to permit fullutilization of these high strengths,whicha