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Dispersoid-free zones in the heat-affected zone of aluminum alloy welds
Metallurgical and Materials Transactions A, 2000The local microstructure in the heat-affected zone 1 (HAZ1) of a laser beam-welded Al-Mg-Si-Cu aluminum alloy is investigated closely. Dispersoid-free zones (DFZs), where the dispersoids of the base material (BM) are dissolved, are found in the vicinity of the fusion line (FL).
B. C. Meyer +5 more
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Study in Simulated Heat-Affected Zone of Ship Steel
Advanced Materials Research, 2011The experiments were carried out upon the determination of simulated heat-affected zone continuous cooling transformation (SH-CCT) diagrams, the characteristics of microstructure and Vickers hardness of SH-CCT specimens, and impact toughness in simulated coarse grain heat-affected zone (CGHAZ) of ship steels under different heat input based on physical
Wen Yan Liu +3 more
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Hardness Profiles of Quenched Steel Heat Affected Zones
Materials Science Forum, 2013This paper reports the effects of chemical composition on the hardness of the heat affected zone of re-austenitized and water quenched steels. Heat affected zone peak temperatures in the range 300–1350 °C were simulated using a Gleeble 3800 simulator using thermal cycles appropriate to welds with cooling times between 800 and 500 °C of 12s. The maximum
Sakari Tihinen +5 more
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Heat-Affected Zone Hardness Limits for In-Service Welding
2008 7th International Pipeline Conference, Volume 3, 2008Welds made onto in-service pipelines are particularly susceptible to hydrogen cracking. During qualification of welding procedures, limits are often imposed on heat-affected zone hardness (e.g., 350 HV max.) as a way to avoid cracking. The hardness level below which hydrogen cracking does not occur is not a fixed value, but varies as a function of ...
Andrew Carman +2 more
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Diagram for the prediction of weld heat-affected zone microstructure
Metals Technology, 1977Abstract The performance of welded joints, both during fabrication and operation, can depend critically upon the microstructure ofthe heat-affected zone, which, in a steel of given composition, is a function of the welding procedure andjoint geometry. The selection of suitable welding conditions which avoid the formation of crack-sensitive structures ...
P. J. Alberry, W. K. C. Jones
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Heat affected zone cracking in cast inconel 718
Materials Characterization, 1992Abstract Electron beam welding parameters have been shown to influence heat-affected zone (HAZ) microfissuring behavior in cast Inconel 718 (Inconel is a trademark of INCO Alloys). Travel speed was shown to be the most significant factor in influencing HAZ cracking behavior by modifying the thermal gradient(s) and subsequently the stress state in the
Xiao Huang +2 more
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Corrosion of the heat‐affected zone of stainless steel weldments
Anti-Corrosion Methods and Materials, 2010PurposeThe purpose of this paper is to investigate the corrosion of the heat‐affected zone (HAZ) and weld zone of austenitic stainless steels that have been welded using two different processes. The corrosion behavior is evaluated in synthetic seawater using the electrochemical polarization technique.Design/methodology/approachWelded and unwelded UNS ...
S.N. Santillan +4 more
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Prediction of heat-affected zone using Grey theory
Journal of Materials Processing Technology, 2002Abstract The amount of deformation and the residual stress, which influence welded plates, are related directly to three aspects of the welding process: the method of heat input; the welding speed and the geometrical conditions; limitations of the weldment.
Hsing-Chia Kuo, Li-Jen Wu
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‘Subsolidus melting’ of heat affected zone metal in welding
Welding International, 1988(1988). ‘Subsolidus melting’ of heat affected zone metal in welding. Welding International: Vol. 2, No. 6, pp. 501-504.
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Structure of the heat-affected zone in weldments of steel 24Kh2NMFA
Metal Science and Heat Treatment, 19771. With multipass welding of rotor steel 24Kh2NMFA granular bainite is formed in the HAZ. The matrix of the bainite is the α solid solution formed by martensitic kinetics; small areas of granular or elongated form evenly distributed in the matrix consist of martensite and retained austenite. 2.
O. P. Fomina +3 more
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