_STP_496-1971.pdf

FRACTURE TOUGHNESS TESTING AT CRYOGENIC TEMPERATURES A symposium presented at the Seventy-third Annual Meeting AMERICAN SOCIETY FOR TESTING AND MATERIALS Toronto,Ontario,Canada,21-26 June 1970 ASTM SPECIAL TECHNICAL PUBLICATION 496 List price$5.00 04-496000-30 AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race Street,Philadelphia,Pa.19103 Copyright by ASTM Intl(all rights reserved);Mon Dec 21 11:06:37 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.BY AMERICAN SOCIETY FOR TESTING AND IATERIALS 1971 Library of Congress Catalog Card Number:70-163001 NOTE The Society is not responsible,as a body,for the statements and opinions advanced in this publication.Printed in Baltimore.Md.Auguat 1971 Copyright by ASTM Intl(all rights reserved);Mon Dec 21 11:06:37 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Foreword Committee E-24 on Fracture Testing of Metals sponsored the Sym-posium on Fracture Toughness Testing at Cryogenic Temperatures at the Seventy-third Annual Meeting of the American Society for Testing and Materials,held in Toronto,Ontario,Canada,21-26 June 1970.The two-session meeting,given on 24 June,was chairmaned by J.G.Kaufman of the Alcoa Research Laboratories,who was assisted by J.F.Boysen of the Boeing Company.Copyright by ASTM Intl(all rights reserved);Mon Dec 21 11:06:37 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Related ASTM Publications Fracture Toughness Testing and Its Applications,STP 381(1965),$19.50 Plane Strain Crack Toughness Testing of High Strength Metallic Materials,STP 410(1967),$5.50 Review of Developments in Plane Strain Fracture Toughness Testing,STP 463(1970),$18.50 Copyright by ASTM Intl(all rights reserved);Mon Dec 21 11:06:37 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Contents Introduction 1 Plane Strain Fracture Toughness of Some Cryogenic Materials at Room and Subzero Wemperatures-c.VISHNEVSKY AND E.A,STEIGERWALD 3 Plane Strain Fracture Toughness of Aluminum Alloys at Room and Subzero Wemperatures-F.G.NELSON AND J.G.KAUFMAN 27 Influence of Specimen Design in Plane Strain Fracture Toughness Testing-L.R.HALL 40 Fracture of Thin Sections Containing Through and Part-through Cracks-T.W.ORANGE T.L.SULLIVAN AND F.D.CALFO 61 Copyright by ASTM Intl(all rights reserved);Mon Dec 21 11:06:37 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.STP496-EB/Aug.1971 Introduction This special technical publication consists of four papers presented at the Symposium on Fracture Toughness Testing at Cryogenic Tempera-tures at the 1970 Annual Meeting of the American Society for Testing and Materials,held in Toronto,Canada.The session was conceived by the Low Temperature Panel of the ASTM-ASME Joint Committee on Effect of Temperature on the Properties of Metals and cosponsored and supported by ASTM Committee E-24 on Fracture Testing of Metals and the Aerospace Panel of the Joint Committee.The symposium was organized to provide a current picture of the state of the art in fracture toughness testing at cryogenic temperatures.Of principal interest was the application of the foundation of fracture tough-ness testing,based upon modified linear elastic fracture mechanics and built by ASTM Committee E-24,to the field of uttralow temperatures.The four papers in this volume are representative of the situation today.The Vishnevsky-Steigerwald and Nelson-Kaufman papers describe direct applications of the ASTM plane-strain fracture toughness test method(E 399-70)to cryogenic evaluations,although the temperature control procedures used in that program(carried out several years ago)are not recommended today.The paper by L.R.Hall presents comparative frac-ture toughness data for several different specimen designs,including those covered by the ASTM method and surface flawed specimens,at various temperatures.The fourth,by Orange et al,moves more strongly into the complex area of surface flaws now being attacked by ASTM Committee E-24 and presents an analytical treatment of cryogenic data.The Vishnevsky-Steigerwald paper merits special attention,as it is the result of a program developed by the Low Temperature Panel and spon-sored by the Metal Properties Council with the specific intent of develop-ing cryogenic fracture toughness data suitable for consideration for hand-book use.It is the official publication of the final report from that program.All of the detailed data,on file in the Metal Properties Council Office in the Engineering Center in New York City,are available for further study as fracture test methods evolve.The results