Accession Number : AD0755675

Title :   Fracture Toughness of Multi-Run Submerged Arc Welds,

Corporate Author : DEFENCE STANDARDS LABS MARIBYRNONG (AUSTRALIA)

Personal Author(s) : Hughes,P. C.

Report Date : 1972

Pagination or Media Count : 8

Abstract : A series of multi-run submerged arc welds produced with conventional commercial wires and fluxes was evaluated by Charpy V notch and COD tests. Ductile fracture energy is raised and transition temperature lowered by increasing the weld metal Mn/Si ratio to about 2. The COD transition temperature increases with increasing weld metal yield strength. The strain rate sensitivity of the welds, as indicated by the rise in COD transition temperature on testing at a dynamic rather than quasi-static loading rate, increases as weld metal strength decreases. No controlling influence of as-deposited microstructure on fracture toughness was evident in the range of weld metals examined. (Author)

Descriptors :   (*ARC WELDS, FRACTURE(MECHANICS)), WELDING FLUXES, TRANSITION TEMPERATURE, MICROSTRUCTURE, AUSTRALIA

Subject Categories : Couplers, Fasteners, and Joints

Distribution Statement : APPROVED FOR PUBLIC RELEASE