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Heat affected zone

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Published: 01 July 1997
Fig. 18 Comparison of J c values for heat-affected zone (HAZ), weld fusion zone (W), and base metal (BM). Values of kJ/da , in MPa, are provided beyond each bar. Cracks are oriented parallel to the welding direction. SA, submerged arc; GTA, gas-tungsten arc; SMA, shielded-metal arc; GMA More
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Published: 01 November 2011
Fig. 1.3 Weld bead geometry showing fusion zone, heat-affected zone, and base metal. Source: Ref 1.3 More
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Published: 01 November 2011
Fig. 1.5 Weld microstructures showing the fusion zone, heat-affected zone, and base metal for (a) single-pass bead-on-plate weld in A-710 steel and (b) multipass weld in 304 stainless steel. Source: Ref 1.3 More
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Published: 01 August 1999
Fig. 11.24 (Part 2) (d) Heat-affected zone in weld metal. 150 HV. Picral. 250×. (e) Heat-affected zone in weld metal. 150 HV. Picral. 1000×. (f) Weld interface. Picral. 250×. (g) Heat-affected zone in parent metal, adjacent to weld interface. 160 HV. Picral. 1000×. More
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Published: 01 August 2018
Fig. 14.41 (a) Higher magnification of fusion line and heat-affected zone of SAW-NG weld of 20MnMoNi55 ( Fig. 14.39 ). From the top left to the right, three welding beads can be observed. It is possible to observe the columnar region in each of the beads as well as the refined microstructure More
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Published: 01 August 2018
Fig. 16.17 Example of a hot crack in the heat-affected zone of a dissimilar metals weld (an engineering steel— Chapter 15, “Engineered Special Bar Quality Steel (Engineered Steels),” in this book—and a stainless steel). The crack propagates through the last region to solidify. The crack More
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Published: 01 December 2015
Fig. 1 Preferential corrosion in the heat affected zone of a carbon steel weldment after service in an aqueous environment. 5×. Source: Ref 3 More
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Published: 01 December 2015
Fig. 9 Micrograph of a longitudinal crack in the heat affected zone of a weld from storage vessel B. Etched with nital. Source: Ref 11 More
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Published: 01 December 2015
Fig. 25 Caustic stress-corrosion cracking in the heat-affected zone of a type 316L stainless steel NaOH reactor vessel. Cracks are branching and intergranular. More
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Published: 01 December 2015
Fig. 40 Intergranular corrosion of the inside surface heat-affected zone of E-Brite stainless steel adjacent to the weld fusion line. Electrolytically etched with 10% oxalic acid. 100× More
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Published: 01 December 2015
Fig. 37 Sulfide stress cracking of hard heat-affected zone next to weld in A516-70 pressure vessel steel after exposure to sour water. 35× More
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Published: 01 December 2015
Fig. 44 Intergranular cracking in heat-affected zone of stringer bead weld on type 304 (S30400) stainless steel pipe due to zinc embrittlement. Weld area had been covered with zinc-rich paint. More
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Published: 01 October 2012
Fig. 2.44 Friction stir fusion weld. A = parent metal (PM); B = heat-affected zone (HAZ); C = unrecrystallized area; D = recrystallized nugget; C + D = thermomechanically affected zone (TMAZ). Courtesy of The Welding Institute More
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Published: 01 July 1997
Fig. 1 Relationship between heat-affected zone (HAZ) volume fraction of martensite and the P cm carbon equivalents of thermally cycled specimens. Four thermal programs are included: (1) peak temperature ( T p ) = 1350 °C (2460 °F), cooling time from 800 to 500 °C (Δ t 8/5 ) = 3 s; (2) T More
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Published: 01 July 1997
Fig. 2 Regions of the heat-affected zone (HAZ). (a) The HAZ regions in a single-bevel multipass weld. SCHAZ, subcritical HAZ; ICHAZ, intercritical HAZ; FGHAZ, fine-grained HAZ; GCHAZ, grain-coarsened HAZ; SRGCHAZ, subcritically reheated grain-coarsened HAZ; IRGCHAZ, intercritically reheated More
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Published: 01 July 1997
Fig. 17 Variation of hardness profiles in the heat-affected zone (HAZ) of thermomechanically controlled processed (TMCP) steel welded with various heat inputs. Chemical composition of steel: C, 0.06%; Si, 0.14%; Mn, 1.33%; P, 0.010%; S, 0.001%; Cu, 0.31%; Ni, 0.31 %; Cr, 0.05%; Nb, 0.015 More
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Published: 01 July 1997
Fig. 25 Preferential corrosion in the heat-affected zone of a carbon steel weldment after service in an aqueous environment. 5x. Source: Ref 38 More
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Published: 01 July 1997
Fig. 28 Micrograph of a longitudinal crack in the heat-affected zone of a weld from storage vessel B, described in text. Etched with nital. Source: Ref 41 More
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Published: 01 July 1997
Fig. 29 Photomicrograph of hydrogen-induced crack in weld heat-affected zone. 5× More
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Published: 01 July 1997
Fig. 2 Photomicrograph showing a heat-affected zone microfissure in a nickel-chromium alloy. Specimen is a GMAW 44.4 mm (1.75 in.) plate. Electrolytic phosphoric acid etchant. 75x More