Title page for ETD etd-04182009-041018
|Type of Document
||Iyer, Venkatramani S.
||Effect of residual stress gradients in austenitic stainless steels on stress corrosion cracking
||Master of Science
|Hendricks, Robert W.
|David, Stan A.
|Landgraf, Ronald W.
|Reynolds, William T. Jr.
|Date of Defense
The effect of the residual stresses developed during simulated weld heat affected zone in
austenitic stainless steel specimen on the stress corrosion cracking susceptibility was studied.
Residual stresses was measured using X-ray diffraction technique. Boiling Magnesium
Chloride was used as corrosive environment. Compressive stresses developed in the HAZ of
the specimen and in regions away from the HAZ stress free values were obtained. The magnitude
of the stress gradient decreased as the peak temperature attained during simulated
welding decreased. Transgranular cracks were observed in the compressive stress gradient
region and time to cracking decreased with increasing stress gradient. Higher nickel content
alloys took longer to crack as opposed to lower nickel content alloys at approximately the
same stress gradient.
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