Circumventing practical difficulties in determination of threshold stress intensity for stress corrosion cracking of narrow regions of weldments
Determination of the threshold stress intensity for stress corrosion cracking (KIscc) of narrow areas such as weld and heat affected zone ( HAZ) of a weldment is a non-trivial task,because of requirements of large specimens in testing by the traditional techniques and difficulty in restricting crack propagation to narrow regions in such specimens.This presentation will describe a successful application of circumferential notch tensile ( CNT) technique in determination of KIscc of narrow regions of weldment such as HAZ.Microstructure of HAZ of manual metal arc welded steel was simulated over a relatively small length of specimens and its KIscc in a hot caustic solution was successfully determined.Inter-granular stress corrosion cacking was confirmed with scanning electron microscope.
threshold stress intensity for stress corrosion cracking ( KIscc) weldment heat affected zone(HAZ)
R K Singh Raman
Department of Mechanical and Aerospace Engineering,and Department of Chemical Engineering,Monash University ( Melbourne),Vic 3800,Australia
国内会议
上海
英文
1-4
2013-06-01（万方平台首次上网日期，不代表论文的发表时间）