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Heat affected zone COD testing
Theoretical and Applied Fracture Mechanics, 1986Abstract The paper focusses on additional COD test validity criteria which are seen as necessary to ensure the accurate assessment of heat affected zone toughness. Theoretical considerations indicate that it is necessary for the COD notch to intersect the heat affected zone for at least 8% of the specimen thickness in order to ensure accurate ...
G. Kohler, R. Whitfield, C. Chipperfield
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Heat-Affected Zones in Grinding Steel
CIRP Annals, 1994Summary Two well known forms of metallurgical damage of ground surfaces involve untempered and overtempered martensite. Both of these forms of metallurgical damage involve martensitic transformations. This paper reviews the nature of such transformations and the special characteristics that pertain in grinding where the time at temperature before ...
M.C. Shaw, A. Vyas
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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
S.J. Heikkilä +5 more
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Heat Affected Zone in Microwave Polymer Welding
Advanced Materials Research, 2016This paper aims to present some specific aspects regarding the heat affected zone in microwave polymer welding. It presents several results of investigation of the physical and mechanical modification of the HDPE100 polymer when the microwave heating is applied.
Sorin Vasile Savu +2 more
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Simulated Heat-Affected Zone of Steel 4330V
Materials Performance and Characterization, 2019Abstract Steel 4330V is a material that contains an addition of vanadium (approximately 0.06 wt. %). The steel is widely used in the mining and petroleum industries. The steel microstructure contains tempered martensite. The high carbon equivalent of the steel makes it difficult to weld.
Marcin Żuk +2 more
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Heat affected zones in polymer laser marking
Journal of Thermal Analysis and Calorimetry, 2013Laser marking is based on the laser heating of the subjected material, the heating being below the melting temperature or thermal degradation starting point. Within and nearby the mark, the material is chemically, physically and mechanically affected.
Ionel Danut Savu +2 more
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Heat Affected Zone Induced by Laser Forming
Volume 1, 2004Laser forming induces mechanical and structural modifications around the Laser Scanning Path. Various conventional methods are currently available to estimate properties of materials like X-ray and neutron diffraction, strain/curvature measurement, hole drilling, layer removal, chemical etching, etc.
CASAMICHELE L +2 more
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Prediction of residual stresses in the heat affected zone
Journal de Physique IV, 2004In this paper the behavior of a disc made up of carbon manganese steel and subjected to an axisymmetric heating in its middle zone is considered. The applied thermal cycle generates localized metallurgical solid-solid phase transformations. Contrary to the study performed some years ago, the present work is concerned with relatively thick discs that ...
Petit-Grostabussiat, S. +2 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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Fatigue crack propagation through weld heat affected zones
Metallurgical Transactions, 1971Fatigue tests were performed on specimens containing weld heat affected zones at two orientations to the stress axis. Two heat affected zones were studied, one in Ducol W30 (a low alloy steel) and the other in mild steel. Under conditions of constant alternating and maximum stress intensity a fatigue crack only propagated at a uniform rate when it was ...
K. R. Dowse, C. E. Richards
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