Page 379 - Challenges in Corrosion Costs Causes Consequences and Control(2015)

CORROSION DAMAGE, DEFECTS, AND FAILURES 357

1 .0 in.
25.4 mm

(a)

1–1/4Cr 1/2Mo 309 weld overlay

400 μm

(b)

1
1
Figure 5.39 309 uniform overlay on 1 / 4 Cr / 2 Mo boiler tube after service in coal-fired boiler.
(a) Weld overlay with visible weld beads. (b) Weld overlay cross section showing no corrosion
and no cracking. (Figure originally published in Reference 29. Reproduced with permission of
the Canadian Institute of Mining, Metallurgy and Petroleum. www.cim.org.)