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Relevant bibliographies by topics / Heat-affected zone liquation

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Journal articles

Academic literature on the topic 'Heat-affected zone liquation'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Heat-affected zone liquation"

1

Chaturvedi, Mahesh C. "Liquation Cracking in Heat Affected Zone in Ni Superalloy Welds." Materials Science Forum 546-549 (May 2007): 1163–70. http://dx.doi.org/10.4028/www.scientific.net/msf.546-549.1163.

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Precipitation hardened nickel-based superalloys are widely used in aero and industrial gas turbine engines due to their excellent high temperature strength and remarkable hot corrosion resistance. A drawback of many of these alloys is that they are very difficult to weld due to their high susceptibility to heat affected zone (HAZ) cracking, both during welding and post weld heat treatments (PWHT). Weld cracking in many of these alloys has been attributed mostly to constitutional liquatioin of grain boundary NbC precipitates. however, HAZ cracking has been observed in carbon-free superalloys as

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2

Jeong, Ye-Seon, Kyeong-Min Kim, Hyungsoo Lee, Seong-Moon Seo, and Eun-Joon Chun. "Evaluation and Control of Liquation Cracking Susceptibility for CM247LC Superalloy Weld Heat-Affected Zone via Visualization-Based Varestraint Test." Korean Journal of Metals and Materials 59, no. 7 (2021): 445–58. http://dx.doi.org/10.3365/kjmm.2021.59.7.445.

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The metallurgical aspects of weld cracking in Ni-based superalloys remain relatively unexplored in existing research. The present study performed comprehensive metallurgical and manufactural investigations into the weldability of an Ni-based superalloy, CM247LC, from the viewpoint of the liquation cracking behavior and its susceptibility. Metallurgical solutions to suppress the liquation-cracking susceptibility were derived via the visualization-based Varestraint test, and the possibility of liquation crack-free welding was explored by employing pre-weld heat treatments and laser beam welding.

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3

Jeong, Ye-Seon, Kyeong-Min Kim, Uijong Lee, Hyungsoo Lee, Seong-Moon Seo, and Eun-Joon Chun. "Evaluation of Liquation Cracking Behavior and Susceptibility in Heat-Affected Zone of CM247LC Superalloy Welds for Turbine Blade Application." Korean Journal of Metals and Materials 58, no. 12 (2020): 875–86. http://dx.doi.org/10.3365/kjmm.2020.58.12.875.

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In this study, the weldability of the as-cast CM247LC superalloy for turbine blade applications was metallurgically evaluated in terms of its hot cracking behavior and susceptibility. For this purpose, a real blade was manufactured using a directional solidification casting process, and gas tungsten arc welding was performed at the tip and cavity of the upper blade. Hot cracking was confirmed in the heat-affected zone (HAZ) of gas tungsten arc welds, and the cracks were characterized as liquation cracks, since a cobble or dropletshaped crack surface consistent with a liquid film was clearly co

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4

Rakoczy, Łukasz, Fabian Hanning, Joel Andersson, Małgorzata Grudzień-Rakoczy, Rafał Cygan, and Anna Zielińska-Lipiec. "Microstructure evolution of the Gleeble-simulated heat-affected zone of Ni-based superalloy." MATEC Web of Conferences 287 (2019): 06002. http://dx.doi.org/10.1051/matecconf/201928706002.

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The formation of liquation cracking in a simulated heat affected zone of René108 is reported. The stress controlled thermo-mechanical experiments were carried out on a Gleeble®3800 testing system. The base alloy was lost-wax cast and then solution treated and aged. Light and scanning electron microscopy of this material revealed high volume fraction of γ' precipitates in the dendrite arms and residual eutectic γ/γ' islands in the interdendritic areas. As a result of short-term exposure to high homologous temperature, the volume fraction of γ' phase was significantly decreased due to the dissol

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5

Chen, Kai-Cheng, Tai-Cheng Chen, Ren-Kae Shiue, and Leu-Wen Tsay. "Liquation Cracking in the Heat-Affected Zone of IN738 Superalloy Weld." Metals 8, no. 6 (2018): 387. http://dx.doi.org/10.3390/met8060387.

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6

Baeslack, W. A., and D. E. Nelson. "Morphology of weld heat-affected zone liquation in cast alloy 718." Metallography 19, no. 3 (1986): 371–79. http://dx.doi.org/10.1016/0026-0800(86)90024-8.

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7

Saha, Dulal Chandra, InSung Chang, and Yeong-Do Park. "Heat-affected zone liquation crack on resistance spot welded TWIP steels." Materials Characterization 93 (July 2014): 40–51. http://dx.doi.org/10.1016/j.matchar.2014.03.016.

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8

Messler, R. W., and L. Li. "Weld heat affected zone liquation cracking in type 347 stainless steel." Science and Technology of Welding and Joining 2, no. 2 (1997): 43–52. http://dx.doi.org/10.1179/stw.1997.2.2.43.

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9

Raza, Hurtig, Asala, Andersson, Svensson, and Ojo. "Influence of Heat Treatments on Heat Affected Zone Cracking of Gas Tungsten Arc Welded Additive Manufactured Alloy 718." Metals 9, no. 8 (2019): 881. http://dx.doi.org/10.3390/met9080881.

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The weldability of additive manufactured Alloy 718 was investigated in various heat-treated conditions. The microstructure of the base metal was examined in detail in order to understand the effect of different pre-weld heat treatments; i.e., solution, solution and aging, and hot isostatic pressing. After welding, the variation in total crack lengths, maximum crack length and the total number of cracks in the heat affected zone (HAZ) were used as criteria for the cracking susceptibility of each material condition where wrought Alloy 718 was used as the reference material. Selective laser melti

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10

Singh, Sukhdeep, Fabian Hanning, and Joel Andersson. "Influence of Hot Isostatic Pressing on the Hot Ductility of Cast Alloy 718: The Effect of Niobium and Minor Elements on the Liquation Mechanism." Metallurgical and Materials Transactions A 51, no. 12 (2020): 6248–57. http://dx.doi.org/10.1007/s11661-020-06004-8.

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AbstractThe influence of two hot isostatic pressing (HIP) treatments on liquation behavior was investigated and compared with regard to the extent of heat-affected zone liquation cracking in cast Alloy 718. The extent of liquation was seen to increase after HIP treatment at 1190 °C due to solute changes caused by the homogenization of Nb, which contributed to extensive grain boundary melting. The HIP treatment at 1120 °C exhibited lower liquation with contributions from particle liquation of the Laves phase and constitutional liquation of NbC carbides. This was also reflected in a lower ductil

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