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fusion zone

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Image
Published: 01 November 2011
Fig. 1.3 Weld bead geometry showing fusion zone, heat-affected zone, and base metal. Source: Ref 1.3 More
Image
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
Image
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
Image
Published: 01 December 2018
Fig. 6.163 Close-up view of ID surfaces showing puncture located at fusion zone of the butt weld. Uneven weld penetration forming nonuniform ridges at the weld line are shown. The weld metal had excess penetration (as shown by arrow). More
Image
Published: 01 December 2000
Fig. 9.5 Macrograph showing equiaxed prior-beta grain structure in the fusion zone of a Ti-6Al-4V weld joint produced by gas-tungsten arc welding using titanium microcooler additions. 12× More
Image
Published: 01 December 2000
Fig. 9.6 Postweld heat-treated gas-tungsten arc-welded fusion zone in beta-C sheet. (a) Aged at 482 °C (900 °F) for 24 h, 275×. (b) Same heat treatment as (a). 690×. (c) Aged at 593 °C (1100 °F) for 8 h. 275×. (d) Same heat treatment as (c). 690× More
Image
Published: 01 December 2006
Fig. 3 Metallographic cross section showing preferential fusion zone attack in alloy B-2 (UNS N10665). Sample was a welded coupon placed in a chemical plant process stream for approximately 1 year. Hydrochloric and chromic acid etch. 75× More
Image
Published: 01 July 1997
Fig. 17 Optical micrograph of fusion zone obtained with the Ti-6Al-4V sheet welded using a tantalum shim. Kroll’s reagent was used as the etchant. Microstructure consists of Widmanstätten α + β and α' martensite. More
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Published: 01 July 1997
Fig. 18 X-ray diffraction trace of fusion zone in Ti-6Al-4V sheet welded using a tantalum shim, showing peaks that identify hexagonal structures More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930003
EISBN: 978-1-62708-359-1
... Abstract It is well established that solidification behavior in the fusion zone controls the size and shape of grains, the extent of segregation, and the distribution of inclusions and defects such as porosity and hot cracks. Since the properties and integrity of the weld metal depend...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930329
EISBN: 978-1-62708-359-1
... alloys in terms of grain boundary precipitation, grain growth, and hot cracking in the heat-affected zone; fusion zone segregation and porosity; and postweld heat treatments. Next, the article analyzes the welding characteristics of dissimilar and clad materials. This is followed by sections summarizing...
Image
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
Image
Published: 01 November 2011
Fig. 6.20 Friction stir fusion weld. A, parent metal; 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 December 2006
Fig. 41 Unmixed zone that formed at the fusion boundary between a superaustenitic stainless steel welded with a nickel-base filler metal. Source: Ref 23 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
Image
Published: 01 August 2018
and longitudinal section in the bottom rebar. Fusion zone, flash protruding out of the weld, and the heat-affected zones can be seen in both bars. (c) Region marked as “L” in (b). Longitudinal cross section of the bottom bar. Deformed ferrite and pearlite. (d) Fusion zone, acicular microstructure. (e) Region More
Image
Published: 01 August 2018
to the weld and to the bars. Fusion zone, flash protruding out of the weld, and heat-affected zones in both bars. (c) From left to right, acicular martensite, ferrite, and partially spheroidized pearlite and base material not affected by the thermal cycle. Courtesy of ArcelorMittal Aços Longos, Juiz de Fora More
Image
Published: 31 December 2020
Fig. 20 Effect of normalizing on resistance welded 1015 steel tube. (a) Transverse section with vertical band of the fusion zone and heat affected zone on each side. (b) Normalized tube wit weld zone at center. Light areas are ferrite, dark pearlite. More
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Published: 01 December 1989
Fig. 3.25. Comparison of crack-growth-rate scatter bands for ex-service heat-affected-zone/fusion-zone material and base material for ferritic steels ( Ref 149 ). More
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Published: 01 December 2006
Fig. 3 Grain boundary martensite formation in a type 430 ferritic stainless steel gas-tungsten arc weld. (a) Fusion zone. 100×. (b) Heat-affected zone. 150×. Source: Ref 13 , 14 More