STRESS CORROSION CRACKING RESISTANCE OF LASER MODIFIED COPPER-NICKEL ALLOYS

Authors
  1. Betancourt, T.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Nova Scotia Research Foundation, Dartmouth NS (CAN)
Abstract
The laser treated as-cast welded and non-standard chromium modified 70/30 copper nickel alloy (IN 768) has been investigated for susceptibility to stress corrosion cracking in aerated seawater. The laser treated surfaces under test conditions performed better than their untreated counterparts. Several untreated weld specimens showed cracks extending from surface pits in their heat affected zones. The laser treated welded specimens tested under the same conditions showed no signs of similar cracking.
Keywords
Surface modification
Report Number
DREA-CR-91-477 — Contractor Report
Date of publication
01 Nov 1991
Number of Pages
82
DSTKIM No
94-00097
CANDIS No
128856
Format(s):
Hardcopy;Originator's fiche received by DSIS

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