Accession Number : AD0686376

Title :   RATIO ANALYSIS DIAGRAM INTERPRETATIONS OF THE FRACTURE TOUGHNESS CHARACTERISTICS OF MARAGING STEEL WELDS IN THE RANGE FROM 150- TO 200-KSI YIELD STRENGTH.

Descriptive Note : Final rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Puzak,P. P. ; Lange,E. A.

Report Date : 26 MAR 1969

Pagination or Media Count : 12

Abstract : The ratio analysis diagram (RAD), which is a graphical method by which the fracture toughness of a material may be commonly indexed by various energy scales, was used to characterize the fracture behavior of maraging steel weld metals in the yield strength range from 150 to 200 ksi. Dynamic tear (DT) tests for indexing to the RAD were conducted for four wire compositions. The predicted structural performance ranged from fracture initiation requiring large flaws and plastic instability for 160-ksi yield strength material, to fracture initiation requiring only flaws in the range of tenths of an inch and elastic stresses for 190-ksi yield strength material. (Author)

Descriptors :   (*MARAGING STEELS, WELDS), (*WELDS, MECHANICAL PROPERTIES), FRACTURE(MECHANICS), LOADS(FORCES), TOUGHNESS, PREDICTIONS, TENSILE PROPERTIES, YIELD POINT, IMPACT TESTS, WELDING RODS, NICKEL ALLOYS, DUCTILE BRITTLE TRANSITION, TRANSITION TEMPERATURE

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE