FRACTURE OF TEMPER EMBRITTLED HY130 WELDMENTS

Authors
  1. Morrison, J.
Corporate Authors
Defence Research Establishment Pacific, Victoria BC (CAN)
Abstract
The report describes an investigation of the embrittlement associated with thermal stress relief of multipass butt welds in 13-mm and 25-mm HY130 plate. While the parent metal is not greatly affected by a stress relief treatment, shielded metal-arc weldments suffer a drastic drop in Charpy V-notch toughness when slow cooled from the tempering temperature. Instrumented impact tests suggest that while both crack initiation and propagation resistance are lowered by slow cooling after tempering, the energy associated with propagation is more severely affected. JI-R curve measurements tend to support these observations; the crack initiation toughness remains relatively high and the embrittlement is characterized by a loss of tolerance for propagating cracks.
Report Number
TM-84-1 —
Date of publication
15 Feb 1984
Number of Pages
24
DSTKIM No
84-04322
CANDIS No
123273
Format(s):
Microfiche filmed at DSIS;Originator's fiche received by DSIS;Hardcopy

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