In Situ Production of Titanium Aluminides during Wire Arc Additive Manufacturing with Hot-Wire Assisted GMAW Process
As part of a feasibility study, an alternative production process for titanium aluminides was investigated. This process is based on in situ alloying by means of a multi-wire technique in the layer-wise additive manufacturing process. Thereby, gas metal arc welding (GMAW) was combined with additiona...
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doaj-5952316404c34b72ba04fd815cfdaed82020-11-25T02:08:00ZengMDPI AGMetals2075-47012019-05-019557810.3390/met9050578met9050578In Situ Production of Titanium Aluminides during Wire Arc Additive Manufacturing with Hot-Wire Assisted GMAW ProcessPhilipp Henckell0Yarop Ali1Andreas Metz2Jean Pierre Bergmann3Jan Reimann4Production Technology Group, Technische Universität Ilmenau, D-98693 Ilmenau, GermanyProduction Technology Group, Technische Universität Ilmenau, D-98693 Ilmenau, GermanyProduction Technology Group, Technische Universität Ilmenau, D-98693 Ilmenau, GermanyProduction Technology Group, Technische Universität Ilmenau, D-98693 Ilmenau, GermanyProduction Technology Group, Technische Universität Ilmenau, D-98693 Ilmenau, GermanyAs part of a feasibility study, an alternative production process for titanium aluminides was investigated. This process is based on in situ alloying by means of a multi-wire technique in the layer-wise additive manufacturing process. Thereby, gas metal arc welding (GMAW) was combined with additional hot-wire feeding. By using two separate wires made of titanium and aluminum, it is possible to implement the alloy formation of titanium aluminides directly in the weld bead of the welding process. In this study, wall structures were built layer-by-layer with alloy compositions between 10 at% and 55 at% aluminum by changing the feeding rates. During this investigation, the macroscopic characteristics, microstructural formation, and the change of the microhardness values were analyzed. A close examination of the influence of welding speed and post-process heat treatment on the Ti−47Al alloy was performed; this being particularly relevant due to its economically wide spread applications.https://www.mdpi.com/2075-4701/9/5/578additive manufacturingGMAWwire arc additive manufacturingtitanium aluminidesmicrostructurecross sectionshardness measurementsX-ray diffractionhot wire |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Philipp Henckell Yarop Ali Andreas Metz Jean Pierre Bergmann Jan Reimann |
spellingShingle |
Philipp Henckell Yarop Ali Andreas Metz Jean Pierre Bergmann Jan Reimann In Situ Production of Titanium Aluminides during Wire Arc Additive Manufacturing with Hot-Wire Assisted GMAW Process Metals additive manufacturing GMAW wire arc additive manufacturing titanium aluminides microstructure cross sections hardness measurements X-ray diffraction hot wire |
author_facet |
Philipp Henckell Yarop Ali Andreas Metz Jean Pierre Bergmann Jan Reimann |
author_sort |
Philipp Henckell |
title |
In Situ Production of Titanium Aluminides during Wire Arc Additive Manufacturing with Hot-Wire Assisted GMAW Process |
title_short |
In Situ Production of Titanium Aluminides during Wire Arc Additive Manufacturing with Hot-Wire Assisted GMAW Process |
title_full |
In Situ Production of Titanium Aluminides during Wire Arc Additive Manufacturing with Hot-Wire Assisted GMAW Process |
title_fullStr |
In Situ Production of Titanium Aluminides during Wire Arc Additive Manufacturing with Hot-Wire Assisted GMAW Process |
title_full_unstemmed |
In Situ Production of Titanium Aluminides during Wire Arc Additive Manufacturing with Hot-Wire Assisted GMAW Process |
title_sort |
in situ production of titanium aluminides during wire arc additive manufacturing with hot-wire assisted gmaw process |
publisher |
MDPI AG |
series |
Metals |
issn |
2075-4701 |
publishDate |
2019-05-01 |
description |
As part of a feasibility study, an alternative production process for titanium aluminides was investigated. This process is based on in situ alloying by means of a multi-wire technique in the layer-wise additive manufacturing process. Thereby, gas metal arc welding (GMAW) was combined with additional hot-wire feeding. By using two separate wires made of titanium and aluminum, it is possible to implement the alloy formation of titanium aluminides directly in the weld bead of the welding process. In this study, wall structures were built layer-by-layer with alloy compositions between 10 at% and 55 at% aluminum by changing the feeding rates. During this investigation, the macroscopic characteristics, microstructural formation, and the change of the microhardness values were analyzed. A close examination of the influence of welding speed and post-process heat treatment on the Ti−47Al alloy was performed; this being particularly relevant due to its economically wide spread applications. |
topic |
additive manufacturing GMAW wire arc additive manufacturing titanium aluminides microstructure cross sections hardness measurements X-ray diffraction hot wire |
url |
https://www.mdpi.com/2075-4701/9/5/578 |
work_keys_str_mv |
AT philipphenckell insituproductionoftitaniumaluminidesduringwirearcadditivemanufacturingwithhotwireassistedgmawprocess AT yaropali insituproductionoftitaniumaluminidesduringwirearcadditivemanufacturingwithhotwireassistedgmawprocess AT andreasmetz insituproductionoftitaniumaluminidesduringwirearcadditivemanufacturingwithhotwireassistedgmawprocess AT jeanpierrebergmann insituproductionoftitaniumaluminidesduringwirearcadditivemanufacturingwithhotwireassistedgmawprocess AT janreimann insituproductionoftitaniumaluminidesduringwirearcadditivemanufacturingwithhotwireassistedgmawprocess |
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