Results 271 to 280 of about 66,661 (295)
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Small Punch test for weld heat affected zones
Materials at High Temperatures, 2006AbstractSmall Punch tests (SPT) have been performed on four different zones of P91 welded joint, namely the base metal (BM), the weld metal (WM), the heat affected zone at base metal side (HAZ-BM) and the heat affected zone at weld metal side (HAZ-WM).
Roman Šturm, Yingzhi Li
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Prediction of tensile properties of intercritical heat affected zone
Materials Science and Technology, 1994AbstractThe tensile properties of the intercritical heat affected zone of structural steels have been examined using the weld thermal simulation technique. The investigation includes one normalised C–Mn steel, one normalised and one rapidly cooled low carbon microalloyed steel, and two quenched and tempered high strength low alloy steels.
A. O. Kluken, G. Rørvik, O. M. Akselsen
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Characteristics of GTA fusion zones and heat affected zones in superalloy 713C
Materials Science-Poland, 2012In this paper, metallographic examinations, characterising microstructural changes in the 713C superalloy subjected to remelting by GTA method, are presented. In the fusion zone, precipitation of M23C6 or M6C carbides based on chromium and molybdenum was observed.
W. Dudziński, M. B. Lachowicz
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Heat Affected Zone in Grinding Operations
1974The temperature rise, due to the passage of a grinding wheel, may have detrimental effects on the surface integrity of the outermost layers of the ground workpiece. In this contribution, a comparison has been made of various models, worked out for evaluating the heat affected zone.
M Maris, R. Snoeys
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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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