WRC 412 Repair Welding Cr

Repair welding Cr-Mo steels without PWHT Welding research Council Bulletin (WRC) 412 Challenges and Solutions in Repair Welding for Power and Pr ocess Plants by W! !oty Publication !ate" #une 1$

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Half-Bead Temper-Bead Half-Bead Temper-Bead Temper-Bead Controlled Deposition Techniques Techniques for Improvement of Fabrication and Service Performance of Cr-Mo Steels ! "an#$ Carl D! %undin$C!!P! &iao$ '! '! 'han$ '! (l-)*el$ +! "! Batten ",C Bulletin ./  0  1ovember2..

The half-bead/temper-bead/controlled half-bead/temper-bead/controlled deposition repair welding techniques, which utilizethe thermal cycles of the second and later weld layers to temper and refine the HAZ of the first layer, hae been applied in accordance with A!"# $oiler and %ressure &essel'uclear &essel'uclear (ode !ection ))) for new construction since the late *+.s and !ection ) for in -serice repair welding of nuclear power plant components0 Thus %ost 1eld Heat Treatment 2%1HT3 may be omitted without causing degraded properties of thecomponent4 especially the base metal HAZ0 The e5tensie A!"# 'uclear (ode studies of !A677 and !A68 materials clearly show the efficacy of non-%1HT technique technique on the (-"n and (-"o steels0 The 9niersity of Tennessee, Tennessee, :no5ille 29T:3 ;oined hands with theesearch (ouncil 2%&>(3 and spanned for a total of ? years0 The materials used in studywere !A78@-** 2* */?(r-*/"o3, !A78@- 2 */?(r-*"o3 and A6*-@0
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