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Abstract:
ferrite content and distribution have been found to be significant in determining both the stress-corrosion cracking susceptibility and the failure mode of duplex stainless steel weldments. the most susceptible duplex weld metals appear to be those which exhibit continuous or nearly continuous ferrite networks. whenever possible, stress-corrosion cracking occurs by preferential dissolution of the ferrite or austenite-ferrite interphase regions. the duplex heat-affected zone structure formed during the welding operation appears to be particularly susceptible to stress-corrosion cracking. as a result, the resistance of the weld metal may be of secondary importance, with weldment susceptibility being determined primarily by the resistance of the weld heat- affected zone.
| Pages: |
3 |
| Report Number: |
D197211 |
Report Unavailable |
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