Evaluation of Cold Metal Transfer procedures for the cladding repair of structural steels

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Authors
  1. Munro, C.
  2. Chen, J.
Corporate Authors
Defence Research and Development Canada, Atlantic Research Centre, Halifax NS (CAN)
Abstract
When structural steel components on naval vessels are damaged replacement parts are commonly difficult to procure and/or install, and so in situ repair of the remaining damaged structure is often preferable. However, steels are most commonly repaired by fusion welding, the high heat of which can lead to unacceptable distortion and degradation of the base metal. In the present work, a low heat input, high productivity cladding technique known as Cold Metal Transfer is explored for the repair of structural steels spanning a range of weldability. The cladding, base metal and the bond between the two are analyzed in terms of strength, ductility and impact performance, and the distortion associated with simulated repairs quantified. The results show that cold metal transfer can create sound repairs of high strength and impact toughness which are comparable in performance and distortion to other advanced, and more expensive, cladding repair techniques that typically have lower productivity.

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Keywords
Welding;Repair;Cladding
Report Number
DRDC-RDDC-2019-R115 — Scientific Report
Date of publication
01 Jul 2019
Number of Pages
31
DSTKIM No
CA049692
CANDIS No
810506
Format(s):
Electronic Document(PDF)

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