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Gotowe bibliografie tematyczne / Heat Effected Zones

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Gotowa bibliografia na temat „Heat Effected Zones”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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Artykuły w czasopismach na temat "Heat Effected Zones"

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Ahmed, Talha, Wali Muhammad, Mustasim Billah Bhatty, Ahnaf Usman Zillohu, and Hamid Zaigham. "Optimization of Maximum Tool Travel Speed for Friction Stir Welded AA-2014-T6 without Compromising the Mechanical Properties." Key Engineering Materials 875 (February 2021): 219–26. http://dx.doi.org/10.4028/www.scientific.net/kem.875.219.

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In this study optimization of maximum travel speed that can be achieved for Friction Stir Welding of Aluminum Alloy 2014-T6 without compromising the mechanical properties was carried out. Joints were made at different travel speeds of 200, 300, 400, 500 and 600 mm/min with constant tool rotational speed of 800 rpm and tool tilt angle of 2.The samples were characterized by stereo microscopy, optical microscopy, scanning electron microscopy, Vickers microhardness testing and tensile testing. Microstructural features of as-welded samples revealed refined equiaxed grains in nugget zone and grain

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Mohammad, Nadeem Khalid, and Chithirai Pon Selvan M. "AN EXPERIMENTAL INVESTIGATION ON WELDING BETWEEN MILD STEEL (AISI 1049) AND STAINLESS STEEL (AISI304) USING GTAW." International Journal of Engineering Research and Modern Education 2, no. 2 (2017): 20–27. https://doi.org/10.5281/zenodo.846404.

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In this study dissimilar metals joints between stainless steel (SS-AISI 304) and mild steel (MS-AISI 1040) were joined by Gas Tungsten Arc Welding (GTAW). To systematically investigate the effects of the chosen process parameters (travel speed, current, gas flow rate, inclination) Taguchi’s robust design of experiments was used. The experiments were performed using four parameters each varied at three levels based on the Taguchi’s L<sub>18</sub> orthogonal array. The weld quality was assessed by bead geometry response parameters and distortion. The results are optimized by means of Multi Objec

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Shchapov, G. V., and N. V. Kazantseva. "Comparative analysis of the chemical composition and mechanical properties of duralumin welded joint produced by friction stir welding." Frontier materials & technologies, no. 2 (2024): 113–19. http://dx.doi.org/10.18323/2782-4039-2024-2-68-10.

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Friction stir welding is an advanced method of joining various metals and alloys in the aircraft and mechanical engineering industries. This type of welding is used to join materials that are difficult to weld or not weldable by conventional methods. The high-strength D16 aluminum alloy is difficult to weld by fusion, which is associated with the formation of a dendritic structure in the fusion zone leading to a decrease in the mechanical strength of the joint. In the work, the microstructure and microhardness of a welded seam of the D16 aluminum alloy produced by friction stir welding was stu

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Sahith, Reddy Madara, M. Chithirai Pon Selvan Dr., and S. Sampath S. "REVIEW OF TOPICAL ENLARGEMENT IN LASER BEAM MACHINING." International Journal of Engineering Research and Modern Education 2, no. 2 (2017): 6–14. https://doi.org/10.5281/zenodo.837875.

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Laser beam technology is a standout amongst the most generally utilized warm vitality based non-contact sort progress machining process which can be connected for entire scope of materials. The cost of slicing hand-to-machine materials by customary mechanical machining procedures is high because of the low material expulsion rate and short device life, and a few materials are unrealistic to be cut by the traditional machining process. Laser beam/pillar is focused for softening and vaporizing the undesirable material from the parent material. It is reasonable for geometrically complex profile c

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Al-Mosawi, Ali I., and Kálmán Marossy. "Heat effected zone in unburned, antimony trioxide containing plasticised PVC." Epitoanyag - Journal of Silicate Based and Composite Materials 70, no. 3 (2018): 86–89. http://dx.doi.org/10.14382/epitoanyag-jsbcm.2018.16.

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Peasura, Prachya, and Lersak Sumarn. "Effect of Post Weld Heat Treatment on Carbon Steel AISI 1050 in Heat Effected Zone." Advanced Materials Research 650 (January 2013): 612–15. http://dx.doi.org/10.4028/www.scientific.net/amr.650.612.

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The research was study the effect of post weld heat treatment parameters on microstructure and hardness in heat affected zone. The specimen was carbon steel AISI 1050 which thickness of 6 mm. The experiments with full factorial design. The factors used in this study were post weld heat treatment(PWHT) temperature of 500, 550, 600, 650 and post weld heat treatment time of 10 and 15 hour. The welded specimens were tested by tensile strength testing and hardness testing according to ASTM code. The result showed that both of post welds heat treatment temperature and post weld heat treatment time h

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Gu, Cai Xiang, Guang Wei Liu, and Yu Dong Xu. "The Influence of Different Gas Welding Flame on Corrosion Behavior of the Carbon Steel’s Heat Affected Zone in Seawater." Advanced Materials Research 1120-1121 (July 2015): 1059–63. http://dx.doi.org/10.4028/www.scientific.net/amr.1120-1121.1059.

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The influence of different flame of gas welding on corrosion behavior of the carbon steel’s heat affected zone in seawater were studied by the weight-loss method, electroanalytical chemistry method and surface and microstructure observation. The result indicate that when gas welding the carbon steel, the corrosion rate of the heat affected zone under the influence of mild carbonizing flame is 0.1252[g／(m2•h)], in contrast, the corrosion rate of that under the influence of neutral flame is 0.1025[g／(m2•h)]; the order of corrosion current shows as follows: Imild carbonizing flame>Ineutral fla

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Sakino, Yoshihiro, Shinya Takahashi, and You-Chul Kim. "OS14-2-2 Effects of Tensile Strength of Weld-Heat-Affected Zones and Strain-Aged Zones on Rate of Increase in Stress Due to High Strain Rate." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2011.10 (2011): _OS14–2–2—. http://dx.doi.org/10.1299/jsmeatem.2011.10._os14-2-2-.

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Slyvins’kyy, О. A., V. V. Kvasnyts’kyy, I. A. Vladymyrskyi, S. P. Bisyk, Ye P. Chvertko, and V. L. Kovalenko. "Effect of Heat Input During Welding on the Microstructure and Mechanical Properties of the Heat-Affected Zone of MIL-A-46100 Armour Steel." METALLOFIZIKA I NOVEISHIE TEKHNOLOGII 46, no. 7 (2024): 663–77. https://doi.org/10.15407/mfint.46.07.0663.

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Kashiyama, Tadayoshi, Shigetaka Okano, and Masahito Mochizuki. "Effect of Process Variable on Temperature Distribution in the Heat-Affected Zone of Temper Bead Welds." QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 35, no. 2 (2017): 13s—17s. http://dx.doi.org/10.2207/qjjws.35.13s.

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Rozprawy doktorskie na temat "Heat Effected Zones"

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Juhas, Mary Catherine. "The effect of low temperature isothermal heat treatments on the intergranular corrosion of AISI 316 stainless steel simulated weld heat affected zones /." The Ohio State University, 1989. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487673114115915.

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Bhattacharya, Neelabhro Madhav. "The effect of niobium in the heat-affected zone of microalloyed steel." Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/270305.

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The controlled, _ne-grained microstructure of thermomechanically processed Nb microalloyed linepipe steels is destroyed in the vicinity of welds used in fabricating pipelines. There are conflicting views on the influence of niobium in the `heat-affected zone', particularly in the region closest to the weld fusion line which is most dramatically impacted by the thermal cycling that occurs during welding. Consequently, there is a need to fully characterise the influence of niobium on the evolution of structures and properties in this zone. The aim of the work presented in this thesis was to quan

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Salama, Adel. "Laser machining of carbon fibre reinforced polymer composite." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/laser-machining-of-carbon-fibre-reinforced-polymer-composite(7310ed95-b876-480b-a8b4-2033b4309cb6).html.

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Carbon fibre reinforced polymer (CFRP) composites have found a wide range of applications in the aerospace, marine, sports and automotive industries owing to their lightweight and acceptable mechanical properties compared to the commonly used metallic materials. The currently dominating method of machining CFRP is by mechanical means that has found many problems including extensive tool wear, fibre pull-out and delamination. Lasers as non-contact tools have been widely applied for cutting and drilling materials. However, machining of CFRP composites using lasers can be challenging due to inhom

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Nuruddin, Ibrahim K. "Effect of welding thermal cycles on the heat affected zone microstructure and toughness of multi-pass welded pipeline steels." Thesis, Cranfield University, 2012. http://dspace.lib.cranfield.ac.uk/handle/1826/7755.

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This research is aimed at understanding the effect of thermal cycles on the metallurgical and microstructural characteristics of the heat affected zone of a multi-pass pipeline weld. Continuous Cooling Transformation (CCT) diagrams of the pipeline steel grades studied (X65, X70 and X100) were generated using a thermo mechanical simulator (Gleeble 3500) and 10 mm diameter by 100 mm length samples. The volume change during phase transformation was studied by a dilatometer, this is to understand the thermodynamics and kinetics of phase formation when subjected to such varying cooling rates. Sampl

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Bevin, Emma, and Matilda Björklund. "Sample quality effects of laser cutting : An empirical study on the heat affected zone and the surface quality in laser cut samples." Thesis, KTH, Materialvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-277878.

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This study has been conducted with the aim to examine the extent of the heat affected zone in order to use laser cutting when making samples for tensile testing. When cutting with a laser the material absorbs heat energy from the laser beams which causes changes in the microstructure. The heat affected zone affects the properties of the materials, lowering the accuracy of the tensile test. Therefore, it is desired to know the extent of the heat affected zone in order to remove it before tensile testing. In this study two materials were used, the high strength steel Docol 1000DP and the duplex

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Lavvafi, Hossein. "EFFECTS OF LASER MACHINING ON STRUCTURE AND FATIGUE OF 316LVM BIOMEDICAL WIRES." Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1352743353.

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Gjønnes, Anders Welde. "Effect of Sulfide Inclusions in Austenitic Stainless Steel on the Initiation of Pitting in Base Metal and Heat Affected Zone after Welding." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for materialteknologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19594.

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The predominant site for the initiation of pitting on austenitic stainless steel has been shown to be sulfide inclusions and notably the manganese types of sulfides. Dissolution of inclusions has been observed and suggested to be the initial step for pit initiation, though several explanations for the mechanisms causing initiation has been proposed. Regarding welded stainless steels, several microstructural changes have been described and suggested to contribute to the decreased corrosion resistance in the weld zone. An area which has not been investigated much is the contribution of inclusion

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Groters, Douglas J. "The temporal and spatial variability of the marine atmospheric boundary layer and its effect on electromagnetic propagation in and around the Greenland Sea marginal ice zone." Thesis, Monterey, California. Naval Postgraduate School, 1988. http://hdl.handle.net/10945/23422.

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Approved for public release; distribution is unlimited<br>Variability of the MABL and its effect on the electromagnetic (EM) refractive structure around the Greenland Sea marginal ice zone were examined. Rawinsonde profiles and surface observations collected from 3 ships during MIZEX-87(20 March-11 April) served as the data set. A program, developed to calculate the refractivity at each vertical level of the rawinsonde profiles, also identified the levels at which trapping, superrefraction and subrefraction occurred. Temporal studies showed that a higher incidence of anomalous refractive layer

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Mert, Emel. "Effect of air gap thickness and contact area on heat transfer through garments in real life situation." Thesis, Mulhouse, 2016. http://www.theses.fr/2016MULH9978.

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Le corps humain et les vêtements sont toujours en interaction directe avec l’environnement, le corps devant maintenir sa température à environ 37°C. Les transferts de chaleur sont affectés non seulement par les propriétés de l’étoffe constitutives du vêtement, mais également par l’épaisseur de la couche d’air entre le corps et le vêtement. Les propriétés thermiques de la couche d’air dépendent de son étendue, influencée par les courbures du corps humain, des propriétés mécaniques de l’étoffe et de la forme du vêtement. Il est donc nécessaire de déterminer la forme 3D du corps et la répartition

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Lightle, Nicole E. "Effects of Air vs. Air+Soil Heating During a Simulated Heat Wave on White Oak (Quercus alba) and Black Oak (Quercus velutina)." University of Toledo / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1365159241.

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Książki na temat "Heat Effected Zones"

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Lundin, C. D. Effect of welding conditions on transformation and properties of heat-affected zones in LWR vessel steels. Division of Engineering, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1990.

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Hopkins, Graeme, and Christine Goodwin. Living Architecture. CSIRO Publishing, 2011. http://dx.doi.org/10.1071/9780643103078.

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Extensively illustrated with photographs and drawings, Living Architecture highlights the most exciting green roof and living wall projects in Australia and New Zealand within an international context. Cities around the world are becoming denser, with greater built form resulting in more hard surfaces and less green space, leaving little room for vegetation or habitat. One way of creating more natural environments within cities is to incorporate green roofs and walls in new buildings or to retrofit them in existing structures. This practice has long been established in Europe and elsewhe

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Części książek na temat "Heat Effected Zones"

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Terekhov, Viktor I., Aleksey Yu Dyachenko, Yaroslav J. Smulsky, Tatyana V. Bogatko, and Nadezhda I. Yarygina. "Effect of Separated Zones on Vortex Formation and Turbulent Heat Transfer in a Round Pipe." In Heat and Mass Transfer. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-94557-2_6.

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Troyer, Greg, and Marjorie Erickson. "Empirical Analyses of Effects of the Heat Affected Zone and Post Weld Heat Treatment on Irradiation Embrittlement of Reactor Pressure Vessel Steel." In Effects of Radiation on Nuclear Materials: 26th Volume. ASTM International, 2014. http://dx.doi.org/10.1520/stp157220130097.

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Karaman, Kardelen. "The Effects of Climate Changes on Livestock Farming and Mitigation Strategies." In Climate Change and Future of Agriculture. Nobel Tip Kitabevleri, 2024. http://dx.doi.org/10.69860/nobel.9786053359449.9.

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The negative impact of climate change on livestock is increasing daily due to rising environmental temperatures. High temperatures and changes in precipitation levels have a negative effect on many aspects of animal health and welfare, as well as livestock performance. Numerous strategies can be used to counteract the negative impact of climate change on livestock, especially by avoiding heat stress and related problems. Ensuring that animals remain in the termo-neutral zone is the basis of these management strategies. The study discussed how the negative impacts of climate change can be mitig

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van der Schaaf, Bob. "Low-Dose Irradiation Effects on Creep Properties of Type 304 Stainless Steel Weld Metal, Heat-Affected Zones, and Welded Joints." In Effects of Radiation on Materials: 12th International Symposium Volume II. ASTM International, 1985. http://dx.doi.org/10.1520/stp87019850011.

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Vilayev, Andrey. "Trigger Effect of a Heat Flow on Distribution of Critical Level of Deformations in Focal Zones." In Springer Proceedings in Earth and Environmental Sciences. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-31970-0_21.

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Acoff, Viola L., Mario Arenas, and Sarah Agee. "Effect of Postweld Heat Treatment on Gamma Titanium Aluminide Fusion Zone Microstructure and Hardness." In Intermetallics and Superalloys. Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607285.ch44.

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Liu, Yurong, Yuanming Zheng, Yu Da, and Jizheng He. "Effect of Soil Hg Stress on Expression of Heat Shock Protein Gene in Springtail Folsomia Candida." In Molecular Environmental Soil Science at the Interfaces in the Earth’s Critical Zone. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-05297-2_17.

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Akihiko, Nagasaka, Naito Junya, Chinzei Shota, et al. "Effect of Heat-Affected Zone on Spot Weldability in Automotive Ultra High Strength Steel Sheet." In HSLA Steels 2015, Microalloying 2015 & Offshore Engineering Steels 2015. John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119223399.ch58.

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Nagasaka, Akihiko, Junya Naito, Shota Chinzei, et al. "Effect of Heat-Affected Zone on Spot Weldability in Automotive Ultra High Strength Steel Sheet." In HSLA Steels 2015, Microalloying 2015 & Offshore Engineering Steels 2015. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48767-0_58.

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Akhtar, Modassir, Akhil Khajuria, and Raman Bedi. "Effect of Re-normalizing and Re-tempering on Inter-critical Heat Affected Zone(S) of P91B Steel." In Lecture Notes on Multidisciplinary Industrial Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4619-8_20.

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Streszczenia konferencji na temat "Heat Effected Zones"

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Shimamura, Junji, Daichi Izumi, Mitsuhiko Hakoda, et al. "Effect of Surface Hardness Distribution on SSC Propagation Behavior in Grade X65 Linepipe." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-19238.

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Abstract UOE linepipe has been long used for high-strength and severe sour application, however, recently hard-zone issue has been often discussed regarding sulfide stress cracking (SSC) in severe sour environment containing H2S gas. One of the possible root cause of SSC was assumed by formation of hard-zones in the steel pipe inner surface. Advanced-OLAC-based cooling rate control for surface and mid-thick area can achieve uniform and low hardness at the surface portion while maintaining sufficient tensile properties. By improving cooling homogeneity as well as surface cooling rate control, h

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Miyata, Yukio, Mitsuo Kimura, Haruo Nakamichi, Kaoru Sato, Noritsugu Itakura, and Katsumi Masamura. "Effects of Thermal Cycle Conditions on Intergranular Stress Corrosion Cracking in Sweet Environment for Supermartensitic Stainless Steel." In CORROSION 2005. NACE International, 2005. https://doi.org/10.5006/c2005-05095.

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Abstract Intergranular stress corrosion cracking (IGSCC) in heat affected zone (HAZ) for supermartensitic stainless steel was studied. Two grades of the steel, lean and high grades, were heat-treated for simulating welding thermal cycles. Cracks were observed in some simulated HAZ specimens by all four methods of SCC test, U-bend, four point bent (4PB), slow strain rate technique (SSRT) and single edge notch bend (SENB) methods. It suggests that even smoothly machined specimen can detect IGSCC as long as the specimen is sensitized sufficiently and immersed in severe corrosion environment. Ther

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Hoerner, Bertrand, David Delafosse, Jacques Stolarz, and Jérome Peultier. "Stress Corrosion Cracking of a Welded Supermartensitic Stainless Steel: Effect of PWHT." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07479.

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Abstract The role of grain boundary sensitization on the intergranular Stress Corrosion Cracking resistance of heat affected zones in welded supermartensitic stainless steels have been studied. Slow strain rate tensile tests are performed on specimen sampled across multiple-pass welds. The effects of the carbon content and chromium to carbon ratio on the resistance to Stress Corrosion Cracking are highlighted. The examination of carbon replica in transmission electron microscopy show that these differences are related to the grain boundary coverage by chromium carbides. A sensitisation phenome

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Matsumoto, K., Y. Kobayashi, K. Ume, K. Murakami, T. Taira, and K. Arikata. "Effect of Centerline Segregations on Hydrogen Induced Cracking Susceptibility of High Grade Line Pipe Steels." In CORROSION 1985. NACE International, 1985. https://doi.org/10.5006/c1985-85239.

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Abstract Effects of chemical compositions, rolling conditions, and homogenization treatment on hydrogen induced cracking (HIC) have been studied metallurgically by simulating center segregation with laboratory heats. Hardness of the center segregation in steels is one of predominant factors affecting susceptibility of high grade line pipe steels to HIC. An increase of carbon equivalent (Ceq) or phosphorus content hardens the segregation zones in conventional-carbon steels produced by controlled-rolling process. Lowering carbon content to the range from 0.01% to 0.05% decreases markedly the har

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Bhattacharya, Ananya, Preet M. Singh, Heikki Leinonen, and Jamshad Mahmood. "Effect of Welding Related Microstructure on Stress Corrosion Cracking Susceptibility in Caustic Solutions." In CORROSION 2006. NACE International, 2006. https://doi.org/10.5006/c2006-06497.

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Abstract Stress Corrosion Cracking in the weld and heat affected zones of Duplex Stainless Steels has been experienced in different industries. Welding can produce changes in the microstructure, especially in the heat affected zones of duplex stainless steels. Welding parameters, such as type of weld, composition of filler metal, heat input and number of passes may affect the dual microstructure of the steel, which in turn may affect its mechanical properties and stress corrosion cracking susceptibility. In this paper, an attempt has been made to study the various aspects of this type of corro

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Ramirez, J. E. "Effect of PWHT on the Heat-Affected Zone Properties of Super-Martensitic Stainless Pipe Steels." In CORROSION 2004. NACE International, 2004. https://doi.org/10.5006/c2004-04136.

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Abstract Significant interest exists in the use of super13Cr materials for oilfield applications. However, the hardness for both the weld deposit and the HAZ of different material combinations may exceed the NACE requirement of 23 HRC (253 HV). The objective of this program was to determine the influence of short post-weld heat treatment (PWHT) on the heat-affected zone (HAZ) mechanical properties and on the microstructure of three super-martensitic stainless pipe steels. The transformation temperatures, AC1 and martensite start formation, for each of the steels was determined by dilatometric

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Huang, Y. Y., G. Yang, and J. Y. Wu. "Mixed Convection Characteristic Inside a Thermal Cycling Chamber With Nonuniform Perforated Plate." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-67640.

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The steady-state flow field and temperature distribution inside a thermal cycling test chamber with nonuniform perforated plate are investigated both numerically and experimentally. Porous zones are set up by pressure loss analogy to simplify the perforated plate. Boussinesq approximation and low-Re model are used in the simulation. The numerical result shows both forced convection and natural convection contribute to the fluid flow and heat transfer. For uniform perforated plate, the temperature at the given height always increases from the center line to the walls. And from top to bottom of

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Till, Michael. "Inhibition of tool surface degradation in hot forging through tailored forming of hybrid dies." In Material Forming. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903599-91.

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Abstract. In forging operations, a high service life of tools is crucial for maintaining efficiency and minimising operational costs. Tools in hot forging are subjected to a complex collective of extreme load mechanisms leading to wear and limited tool life. The primary cause for extensive wear in forging dies is the high temperatures in the surface zone, softening the die material and leading to plastic deformation and ultimately material removal [1]. To repress this mechanism and extend tool life, this work aims at enhancing the effected tool surface zone with a highly temperature-resistant

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Lyzhko, E. "Physiological characteristics of heat and cold weak effects in the Zakharin-Head zones." In 2010 Quantitative InfraRed Thermography. QIRT Council, 2010. http://dx.doi.org/10.21611/qirt.2010.078.

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Reuter, Hanno C. R., Dawie J. Viljoen, and Detlev G. Kro¨ger. "A Method to Determine the Performance Characteristics of Cooling Tower Spray Zones." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22793.

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Cooling tower spray zones play an important role in cooling tower performance. Ideally they must distribute the cooling water uniformly onto the fill and must produce small drops at minimal pressure head to maximise heat and mass transfer in the spray zone with minimal pumping power. Limited thermal performance characteristic data is found in literature for cooling tower spray zones, since it is virtually impossible to measure spray zone performance accurately. In this paper, the method used to model the performance of cooling tower spray zones and results obtained for a medium pressure swirl

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Raporty organizacyjne na temat "Heat Effected Zones"

1

Gill. L51675 Effects of Weldment Property Variations on the Behavior of Line Pipe. Pipeline Research Council International, Inc. (PRCI), 1993. http://dx.doi.org/10.55274/r0010133.

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A steel weldment is a composite of zones or layers of different microstructures that possess different material properties. The zones include the base metal (or the sections of pipe), the weld metal, and a complex heat-affected zone (HAZ) of base metal that has been exposed to a variety of thermal cycles resulting in varying microstructures. The material properties of primary concern with respect to the mechanical behavior of the pipe are the stress-strain response (the constitutive properties) and the resistance to initiation and propagation of cracks or tears in the presence of a crack, notc

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Graville, B. A. L51707 Factors Affecting Heat Affected Zone Root Strains in Pipeline Girth Welds and Repairs. Pipeline Research Council International, Inc. (PRCI), 1993. http://dx.doi.org/10.55274/r0010219.

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A previous study on hydrogen cracking in the heat affected zone of pipeline girth welds and repairs found that large strains in the HAZ transverse to the weld played a major role in causing cracking. Large transverse strains were believed to arise from bending of the weld due to the thermal contraction of the weld around the pipe circumference. Large root strains were simulated in the laboratory using a bend test which enabled the effect of material composition and strength to be studied. In the bend test, the specimen deflection at the onset of cracking, indicated by a drop in load, was used

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Dinovitzer, Aaron. PR-214-144500-R01 Weld Hydrogen Cracking Susceptibility Characterization. Pipeline Research Council International, Inc. (PRCI), 2016. http://dx.doi.org/10.55274/r0010924.

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Hydrogen cracking has been and continues to be observed in both heat-affected zones and weld metals. High carbon equivalent weldment heat-affected zones (HAZ) combined with rapid cooling have been related to the development of hydrogen cracking susceptible microstructures. Weld metal cracking is observed in both high and low strength weldments and is a particular concern for root passes due to the use of cellulosic electrodes, parent metal dilution, applied load, and weld fault stress riser effects promoting cracking. The risk of HAZ and weld cracking are increased for repair and in-service we

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Leis, Groeneveld, and Francini. L51839 Methods for Evaluating the Toughness of Weld Heat-Affected Zones in Line Pipe Steels. Pipeline Research Council International, Inc. (PRCI), 2001. http://dx.doi.org/10.55274/r0010167.

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This report discusses how fracture toughness and weldability are achieved in modern higher-strength line pipe and outlines why a coarse-grain (CG) heat-affected zone (HAZ) develops when welding these steels. The possible effects of this CG-HAZ on the toughness of weld seams in Grade X80 line pipe are reviewed in reference to: 1. criteria in use by pipe producers to achieve and control the toughness of the HAZ and weld metal, 2. test methods to characterize the toughness of the weld metal and HAZ, and 3. the applicability of such test methods to Grade X80 line pipe.

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Schmidt, Walker. L51926 Effects of Welding on HAZ Softening of X70-X80 TMCP Linepipe Steels. Pipeline Research Council International, Inc. (PRCI), 2000. https://doi.org/10.55274/r0010657.

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Experimental work was done to evaluate the effects of welding on the hardness, tensile and toughness properties of the heat affected zone (HAZ) of a series of commercial high strength micro-alloyed linepipe steels, produced through controlled rolling and accelerated cooling (thermo-mechanical control process - TMCP). The test materials, representative of modern low carbon linepipe steels, were selected such as to cover a broad range of chemistries (alloy /micro-alloy designs) and mechanical properties (X 70 and X 80).

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Nanstad, R. K., and D. E. McCabe. Irradiation effects on weld heat-affected zone and plate materials (series 11). Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/223653.

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Dinovitzer, Aaron. PR-214-144500-R05 Weld Hydrogen Cracking Susceptibility Characterization. Pipeline Research Council International, Inc. (PRCI), 2018. http://dx.doi.org/10.55274/r0011495.

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Hydrogen cracking has been and continues to be observed in both heat-affected zones and weld metals. High carbon equivalent weldment heat-affected zones (HAZ) combined with rapid cooling have been related to the development of hydrogen cracking susceptible microstructures. Weld metal cracking is observed in both high and low strength weldments and is a particular concern for root passes due to the use of cellulosic electrodes, parent metal dilution, applied load, and weld fault stress riser effects promoting cracking. The risk of HAZ and weld cracking are increased for repair and in-service we

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Unknown, Author. L51602 Criteria for Hot Tap Welding Further Studies. Pipeline Research Council International, Inc. (PRCI), 1989. http://dx.doi.org/10.55274/r0010102.

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In the gas transmission industry there is a frequent need for modification of existing pipework. Modifications are made primarily by welding on additional pipes and branch connections to existing pipelines. The associated costs of shutting down a pipeline creates a situation whereby it becomes economically feasible to weld onto pipelines containing flowing, pressurized products. The risk of burn through and in particular, the susceptibility to cracking are greatly increased by the rapid cooling rates associated with the high heat sink effect of the flowing gas and in turn can result in excessi

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Dorling. L51497 Investigating the Weldability of Quenched and Tempered Pipeline Materials. Pipeline Research Council International, Inc. (PRCI), 1985. http://dx.doi.org/10.55274/r0010629.

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This program studied the effects of girth welding on the mechanical properties of four quenched and tempered pipeline materials. The study revealed the presence of low-toughness regions in the heat-affected zone of shielded metal arc welds in heavy-wall pipe and fitting materials rated for above-ground service. High-strength, microalloyed steels produced by other processes are also known to be susceptible to similar localized toughness degradation. Because the significance of these regions, with regards to service performance, is not fully understood, further research involving full-scale frac

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Lundin, C. D., and S. Mohammed. Effect of welding conditions on transformation and properties of heat-affected zones in LWR (light-water reactor) vessel steels. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/6337784.

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