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DOI 10.1590/0104-9224/si24.03
Additive Techniques to Refurbish Ni Based Components
2019
Cardozo, Eloisa Pereira
;
Pardal, Gonçalo Rodrigues
;
Rios Contesse, Sergio Eduardo
;
Ganguly, Supriyo
;
D’Oliveira, Ana Sofia C. M.
Abstract The attractiveness of additive techniques to refurbish worn components requires the availability of data from different process. This study correlates two additive techniques, Plasma Transferred Arc (PTA – AM) and Direct Laser Deposition (DLD), using IN 625 wire. Specific features of each technique are discussed regarding their potential use to recover geometry and properties of worn components. Multilayers were processed with each technique on a section of a blade and the interaction between materials together with the effect of post deposition heat treatment were characterized. Results show that there are differences in the final microstructure and in the interaction with the part being refurbished imposed by the additive technique used. Competitive changes can be made by changing the feedstock. PTA-AM using powder material exhibits a microstructure that approaches that obtained in DLD using wire.
Scopus© Citations 7 3
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DOI 10.1007/s00170-018-2340-z
Assessment of the effect of different forms of Inconel 625 alloy feedstock in Plasma Transferred Arc (PTA) additive manufacturing
2018-09
Cardozo, Eloisa Pereira
;
Rios Contesse, Sergio Eduardo
;
Ganguly, Supriyo
;
D'Oliveira, Ana Sofia C. M.
Additive manufacturing (AM) is an emerging fabrication technology, which can offer a faster, versatile, flexible, easily customizable, and a cheaper production path, when compared to conventional manufacturing. There are different additive manufacturing techniques differentiated by the way of material is made available and melted in each layer. The Plasma Transferred Arc (PTA) is a promising AM technique became of its superior energy efficiency compared to laser-related processes. PTA allows to process materials both in powder and wire forms. Recent evidences suggested that the characteristics of the feedstock will impact the final microstructure and consequently the mechanical properties of the deposit. This work carried out a detailed analysis on effects of the feedstock form using PTA to build multilayers with wire and powder IN625 alloy. It considered the specific features of each feedstock for the processing and explored the relationship with the characteristics of the deposited multilayers. Powder plus arc and wire plus arc multilayers were analyzed using confocal microscopy, scanning electron microscopy, X-ray diffraction, and micro-hardness profile. It is shown that the microstructure and mechanical properties of a multilayer component are influenced on choice of the feedstock, mainly because of the differing parameters that will be required in their processing.
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DOI 10.1007/s00170-018-2340-z
Assessment of the effect of different forms of Inconel 625 alloy feedstock in Plasma Transferred Arc (PTA) additive manufacturing
2018-09
Cardozo, Eloisa Pereira
;
Rios Contesse, Sergio Eduardo
;
Ganguly, Supriyo
;
D'Oliveira, Ana Sofia C. M.
Additive manufacturing (AM) is an emerging fabrication technology, which can offer a faster, versatile, flexible, easily customizable, and a cheaper production path, when compared to conventional manufacturing. There are different additive manufacturing techniques differentiated by the way of material is made available and melted in each layer. The Plasma Transferred Arc (PTA) is a promising AM technique became of its superior energy efficiency compared to laser-related processes. PTA allows to process materials both in powder and wire forms. Recent evidences suggested that the characteristics of the feedstock will impact the final microstructure and consequently the mechanical properties of the deposit. This work carried out a detailed analysis on effects of the feedstock form using PTA to build multilayers with wire and powder IN625 alloy. It considered the specific features of each feedstock for the processing and explored the relationship with the characteristics of the deposited multilayers. Powder plus arc and wire plus arc multilayers were analyzed using confocal microscopy, scanning electron microscopy, X-ray diffraction, and micro-hardness profile. It is shown that the microstructure and mechanical properties of a multilayer component are influenced on choice of the feedstock, mainly because of the differing parameters that will be required in their processing.
Scopus© Citations 22 1
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DOI 10.1007/s00170-018-2394-y
Assessment of the effect of different forms of Inconel 625 alloy feedstock in Plasma Transferred Arc (PTA) additive manufacturing (vol 98, pg 1695, 2018)
2018-9
Cardozo, Eloisa Pereira
;
Rios Contesse, Sergio Eduardo
;
Ganguly, Supriyo
;
D'Oliveira, Ana Sofia C. M.
The original version of this article contained a mistake. Fig. 8 in the original article is incorrect. The correct image is shown below.
Scopus© Citations 3 2

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