Repair of Precision Castings Made of the Inconel 713C Alloy

Inconel 713C precision castings are used as aircraft engine components exposed to high temperatures and the aggressive exhaust gas environment. Industrial experience has shown that precision-cast components of such complexity contain casting defects like microshrinkage, porosity, and cracks. This ne...

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Main Authors:	Łyczkowska K., Adamiec J.
Format:	Article
Language:	English
Published:	Sciendo 2017-09-01
Series:	Archives of Foundry Engineering
Subjects:	Weldability Inconel 713C Precision castings Hot cracks
Online Access:	http://www.degruyter.com/view/j/afe.2017.17.issue-3/afe-2017-0117/afe-2017-0117.xml?format=INT

id	doaj-art-377b8af00bd942b2b21f435f9c2fc364
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spelling	doaj-art-377b8af00bd942b2b21f435f9c2fc3642018-09-02T11:57:43ZengSciendoArchives of Foundry Engineering 2299-29442017-09-0117321021610.1515/afe-2017-0117afe-2017-0117Repair of Precision Castings Made of the Inconel 713C AlloyŁyczkowska K.0Adamiec J.1Silesian University of Technology, Institute of Materials Science, Krasińskiego 13, 40-019 Katowice, PolandSilesian University of Technology, Institute of Materials Science, Krasińskiego 13, 40-019 Katowice, PolandInconel 713C precision castings are used as aircraft engine components exposed to high temperatures and the aggressive exhaust gas environment. Industrial experience has shown that precision-cast components of such complexity contain casting defects like microshrinkage, porosity, and cracks. This necessitates the development of repair technologies for castings of this type. This paper presents the results of metallographic examinations of melted areas and clad welds on the Inconel 713C nickel-based superalloy, made by TIG, plasma arc, and laser. The cladding process was carried out on model test plates in order to determine the technological and material-related problems connected with the weldability of Inconel 713C. The studies included analyses of the macro- and microstructure of the clad welds, the base materials, and the heat-affected zones. The results of the structural analyses of the clad welds indicate that Inconel 713C should be classified as a low-weldability material. In the clad welds made by laser, cracks were identified mainly in the heat-affected zone and at the melted zone interface, crystals were formed on partially-melted grains. Cracks of this type were not identified in the clad welds made using the plasma-arc method. It has been concluded that due to the possibility of manual cladding and the absence of welding imperfections, the technology having the greatest potential for application is plasma-arc cladding.http://www.degruyter.com/view/j/afe.2017.17.issue-3/afe-2017-0117/afe-2017-0117.xml?format=INTWeldabilityInconel 713CPrecision castingsHot cracks
institution	Open Data Bank
collection	Open Access Journals
building	Directory of Open Access Journals
language	English
format	Article
author	Łyczkowska K. Adamiec J.
spellingShingle	Łyczkowska K. Adamiec J. Repair of Precision Castings Made of the Inconel 713C Alloy Archives of Foundry Engineering Weldability Inconel 713C Precision castings Hot cracks
author_facet	Łyczkowska K. Adamiec J.
author_sort	Łyczkowska K.
title	Repair of Precision Castings Made of the Inconel 713C Alloy
title_short	Repair of Precision Castings Made of the Inconel 713C Alloy
title_full	Repair of Precision Castings Made of the Inconel 713C Alloy
title_fullStr	Repair of Precision Castings Made of the Inconel 713C Alloy
title_full_unstemmed	Repair of Precision Castings Made of the Inconel 713C Alloy
title_sort	repair of precision castings made of the inconel 713c alloy
publisher	Sciendo
series	Archives of Foundry Engineering
issn	2299-2944
publishDate	2017-09-01
description	Inconel 713C precision castings are used as aircraft engine components exposed to high temperatures and the aggressive exhaust gas environment. Industrial experience has shown that precision-cast components of such complexity contain casting defects like microshrinkage, porosity, and cracks. This necessitates the development of repair technologies for castings of this type. This paper presents the results of metallographic examinations of melted areas and clad welds on the Inconel 713C nickel-based superalloy, made by TIG, plasma arc, and laser. The cladding process was carried out on model test plates in order to determine the technological and material-related problems connected with the weldability of Inconel 713C. The studies included analyses of the macro- and microstructure of the clad welds, the base materials, and the heat-affected zones. The results of the structural analyses of the clad welds indicate that Inconel 713C should be classified as a low-weldability material. In the clad welds made by laser, cracks were identified mainly in the heat-affected zone and at the melted zone interface, crystals were formed on partially-melted grains. Cracks of this type were not identified in the clad welds made using the plasma-arc method. It has been concluded that due to the possibility of manual cladding and the absence of welding imperfections, the technology having the greatest potential for application is plasma-arc cladding.
topic	Weldability Inconel 713C Precision castings Hot cracks
url	http://www.degruyter.com/view/j/afe.2017.17.issue-3/afe-2017-0117/afe-2017-0117.xml?format=INT
_version_	1612644835185917952

Repair of Precision Castings Made of the Inconel 713C Alloy

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