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Heat-Affected Zone as Critical Location in Pressure Equipment
2016The majority of pressure equipment is made from joining by welding parts or sub-assemblies. Welded structure should be produced by spending minimum of cost, assuring in the same time required function and safety. By proper selection of welded joint and material, designer determines the properties of final product, and also possibility of its ...
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Prediction of hardness distribution in steel heat affected zone
Science and Technology of Welding and Joining, 1999A practical method to predict the heat affected zone (HAZ) hardness distribution was studied by considering the effects of prior austenite grain size and tempering on hardenability. For conventionally rolled and thermomechanically processed steels (400–490 MPa grade steels), the hardness distribution between the fusion and Ac3 lines can be fairly well
T. Kasuya, Y. Hashiba
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Microfissuring of Alloy 718 in the Weld Heat-Affected Zone
JOM, 1988Alloy 718 suffers from microfissuring in the weld heat-affected zone, and compositional, structural and mechanistic causes of this defect have been examined. Both bulk sulfur and bulk carbon increase microfissuring, and heat treatments typical ofhomogenization, solution annealing and age hardening reveal that microfissuring is sensitive to the ...
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PWSCC Susceptibility in Heat Affected Zones of Alloy 600
2011The recent field experience and several experimental results have shown the possible deleterious effect of a heat affected zone (HAZ) induced by welding on the susceptibility to the stress corrosion cracking (SCC) of Alloy 600 of bottom penetrations exposed to primary water of PWRs.
Thomas Brossier +2 more
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Towards a prediction of the hardness of the heat-affected zone of steel weldments
Journal of Materials Science, 1991The prediction of the level of hardness developed in the heat-affected zone (HAZ) of steel welds is discussed. It is composed of a thermal model that predicts the cooling behaviour from input welding parameters and a material model for calculating the HAZ hardness as a result of weld cooling.
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Liquation Cracking in Heat Affected Zone in Ni Superalloy Welds
Materials Science Forum, 2007Precipitation hardened nickel-based superalloys are widely used in aero and industrial gas turbine engines due to their excellent high temperature strength and remarkable hot corrosion resistance. A drawback of many of these alloys is that they are very difficult to weld due to their high susceptibility to heat affected zone (HAZ) cracking, both during
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Properties of simulated heat affected zones in structural steels
Welding International, 1987Lubos Mraz, Jan Bosansky
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Structure of the heat affected zone in grey cast irons
Welding International, 1993A. Nowak, A Pocica‐Filipowicz
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