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You searched for subject:(Inconel 738). Showing records 1 – 2 of 2 total matches.

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Université de Bordeaux I

1. Danis, Yann. Etude de la soudabilité d’un superalliage base nickel fortement chargé en éléments durcissants titane et aluminium : l’inconel 738 : Characterization of human gingival stem cells and preclinical culture protocol for human bone therapy.

Degree: Docteur es, Sciences physiques pour l'ingénieur. Mécanique et ingénierie, 2008, Université de Bordeaux I

L’Inconel 738 est un superalliage base nickel utilisé dans les turbines de moteurs aéronautiques. Le soudage engendre souvent l’apparition de fissures, ce qui constitue un handicap pour ce matériau car on ne peut ni le réparer par rechargement, ni concevoir de pièces assemblées par soudage. L'objectif de la thèse est de définir les conditions de soudage de ce superalliage, de manière à exclure tout risque de fissuration à la suite d’opérations de rechargement, de réparation ou d'assemblage par soudage.Une étude expérimentale a tout d’abord permis de comprendre et de relier les mécanismes de fissuration aux paramètres opératoires du procédé (intensité, tension…). Puis un modèle de simulation numérique du soudage a été développé sur la base d’un couplage entre aspects thermiques, métallurgiques et mécaniques. La corrélation entre les résultats expérimentaux et numériques a permis de déterminer des critères de fissuration pour ce superalliage et d’optimiser les paramètres de soudage.

Abstract

Advisors/Committee Members: Quenisset, Jean-Michel (thesis director), Lacoste, Eric (thesis director).

Subjects/Keywords: Superalliage base nickel; Soudabilité; Inconel 738

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Danis, Y. (2008). Etude de la soudabilité d’un superalliage base nickel fortement chargé en éléments durcissants titane et aluminium : l’inconel 738 : Characterization of human gingival stem cells and preclinical culture protocol for human bone therapy. (Doctoral Dissertation). Université de Bordeaux I. Retrieved from http://www.theses.fr/2008BOR13761

Chicago Manual of Style (16th Edition):

Danis, Yann. “Etude de la soudabilité d’un superalliage base nickel fortement chargé en éléments durcissants titane et aluminium : l’inconel 738 : Characterization of human gingival stem cells and preclinical culture protocol for human bone therapy.” 2008. Doctoral Dissertation, Université de Bordeaux I. Accessed January 26, 2020. http://www.theses.fr/2008BOR13761.

MLA Handbook (7th Edition):

Danis, Yann. “Etude de la soudabilité d’un superalliage base nickel fortement chargé en éléments durcissants titane et aluminium : l’inconel 738 : Characterization of human gingival stem cells and preclinical culture protocol for human bone therapy.” 2008. Web. 26 Jan 2020.

Vancouver:

Danis Y. Etude de la soudabilité d’un superalliage base nickel fortement chargé en éléments durcissants titane et aluminium : l’inconel 738 : Characterization of human gingival stem cells and preclinical culture protocol for human bone therapy. [Internet] [Doctoral dissertation]. Université de Bordeaux I; 2008. [cited 2020 Jan 26]. Available from: http://www.theses.fr/2008BOR13761.

Council of Science Editors:

Danis Y. Etude de la soudabilité d’un superalliage base nickel fortement chargé en éléments durcissants titane et aluminium : l’inconel 738 : Characterization of human gingival stem cells and preclinical culture protocol for human bone therapy. [Doctoral Dissertation]. Université de Bordeaux I; 2008. Available from: http://www.theses.fr/2008BOR13761

2. Amegadzie, Mark Yao. Effect of forging pressure on the microstructure of linear friction welded Inconel 738 superalloy.

Degree: Mechanical and Manufacturing Engineering, 2012, University of Manitoba

Inconel 738, which is a nickel base superalloy used for hot section components of aircraft and industrial turbines is difficult to fabricate and repair by fusion welding due to its susceptibility to heat affected zone (HAZ) intergranular cracking. Crack-free joining of the difficult-to-weld alloy is currently achieved by using linear friction welding (LFW). Nevertheless, oxidation along the joint during LFW is a major problem. Information about the effect of process parameters on the microstructural evolution of linear friction welded nickel base alloys is very limited. In this work, the effect of forging pressure on the microstructure of linear friction welded Inconel 738 was studied. The results as elucidated in this work showed that increased forging pressure caused strain-induced rapid solidification of metastable liquid, which resulted in complete elimination of deleterious liquid phase oxides in bonded material contrasting the generally accepted view that assumes extrusion of solid state oxides during LFW. Advisors/Committee Members: Chaturvedi, Mahesh (Mechanical and Manufacturing Engineering) Ojo, Olanrewaju (Mechanical and Manufacturing Engineering) (supervisor), Richards, Norman (Mechanical and Manufacturing Engineering) Shalaby, Ahmed (Civil Engineering) (examiningcommittee).

Subjects/Keywords: Friction welding; Forging pressure; Oxidation; Nickel superalloy; Re-solidified eutectics; Inconel 738; Recrystallization; Weld temperature; Vacancy diffusion; Pipe diffusion

…friction welding processes will be presented. 2.2 Physical Metallurgy of IN 738 Inconel 738 is a… …Inconel 738 consists of an fcc (face centered cubic) austenitic solid solution matrix… …of solution-heat-treated (SHT) IN 738 showing (a) primary and secondary… …x28;b) EDS spectrum of Al-rich oxide on the weld line of IN 738 superalloy linear… …x29; IN 738 sample oxidized at 1230oC in an ordinary laboratory furnace… 

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Amegadzie, M. Y. (2012). Effect of forging pressure on the microstructure of linear friction welded Inconel 738 superalloy. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/8125

Chicago Manual of Style (16th Edition):

Amegadzie, Mark Yao. “Effect of forging pressure on the microstructure of linear friction welded Inconel 738 superalloy.” 2012. Masters Thesis, University of Manitoba. Accessed January 26, 2020. http://hdl.handle.net/1993/8125.

MLA Handbook (7th Edition):

Amegadzie, Mark Yao. “Effect of forging pressure on the microstructure of linear friction welded Inconel 738 superalloy.” 2012. Web. 26 Jan 2020.

Vancouver:

Amegadzie MY. Effect of forging pressure on the microstructure of linear friction welded Inconel 738 superalloy. [Internet] [Masters thesis]. University of Manitoba; 2012. [cited 2020 Jan 26]. Available from: http://hdl.handle.net/1993/8125.

Council of Science Editors:

Amegadzie MY. Effect of forging pressure on the microstructure of linear friction welded Inconel 738 superalloy. [Masters Thesis]. University of Manitoba; 2012. Available from: http://hdl.handle.net/1993/8125

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