Effect of Lanthanum Oxide on the Microstructure and Properties of Ti-6Al-4V Alloy during CMT-Additive Manufacturing
Lanthanum oxide powder was added to improve the microstructure and properties of a Ti-6Al-4V alloy part during cold metal transfer (CMT) based on wire arc additive manufacturing (WAAM). The macrostructure, microstructure and properties of the part were studied by using an optical microscope (OM), sc...
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| Format: | Article |
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MDPI AG
2023-03-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/13/3/515 |
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| author | Huanyu Liu Shuang Wang Jian Liang Hong Hu Qingtao Li Hongrui Chen |
| author_facet | Huanyu Liu Shuang Wang Jian Liang Hong Hu Qingtao Li Hongrui Chen |
| author_sort | Huanyu Liu |
| collection | DOAJ |
| description | Lanthanum oxide powder was added to improve the microstructure and properties of a Ti-6Al-4V alloy part during cold metal transfer (CMT) based on wire arc additive manufacturing (WAAM). The macrostructure, microstructure and properties of the part were studied by using an optical microscope (OM), scanning electron microscope (SEM), electron backscatter(ed) diffraction (EBSD), microhardness evaluation and a tensile test. The results showed that the β grain size and martensite (α) size were reduced by adding lanthanum oxide powder. The texture intensity of the part also decreased due to the change in microstructure. Accordingly, the microhardness and tensile properties of the part obtained by adding lanthanum oxide were improved. In addition, based on the interdependence theory model, adding La<sub>2</sub>O<sub>3</sub> particles in the molten pool as heterogeneous nucleation points could reduce the distance of <i>X<sub>SD</sub></i>, so fine equiaxed β grains can be formed in the deposition layer. |
| first_indexed | 2024-03-11T06:42:55Z |
| format | Article |
| id | doaj.art-8e3d62da1d9f4d3aa94b14d9af8312f4 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-11T06:42:55Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-8e3d62da1d9f4d3aa94b14d9af8312f42023-11-17T10:29:50ZengMDPI AGCrystals2073-43522023-03-0113351510.3390/cryst13030515Effect of Lanthanum Oxide on the Microstructure and Properties of Ti-6Al-4V Alloy during CMT-Additive ManufacturingHuanyu Liu0Shuang Wang1Jian Liang2Hong Hu3Qingtao Li4Hongrui Chen5Institute of Modern Agricultural Equipment, Xihua University, Chengdu 610039, ChinaInstitute of Modern Agricultural Equipment, Xihua University, Chengdu 610039, ChinaInstitute of Modern Agricultural Equipment, Xihua University, Chengdu 610039, ChinaInstitute of Modern Agricultural Equipment, Xihua University, Chengdu 610039, ChinaInstitute of Modern Agricultural Equipment, Xihua University, Chengdu 610039, ChinaSchool of Food and Bioengineering, Xihua University, Chengdu 610039, ChinaLanthanum oxide powder was added to improve the microstructure and properties of a Ti-6Al-4V alloy part during cold metal transfer (CMT) based on wire arc additive manufacturing (WAAM). The macrostructure, microstructure and properties of the part were studied by using an optical microscope (OM), scanning electron microscope (SEM), electron backscatter(ed) diffraction (EBSD), microhardness evaluation and a tensile test. The results showed that the β grain size and martensite (α) size were reduced by adding lanthanum oxide powder. The texture intensity of the part also decreased due to the change in microstructure. Accordingly, the microhardness and tensile properties of the part obtained by adding lanthanum oxide were improved. In addition, based on the interdependence theory model, adding La<sub>2</sub>O<sub>3</sub> particles in the molten pool as heterogeneous nucleation points could reduce the distance of <i>X<sub>SD</sub></i>, so fine equiaxed β grains can be formed in the deposition layer.https://www.mdpi.com/2073-4352/13/3/515cold metal transferTi-6Al-4V alloylanthanum oxidemicrostructurepropertiesWAAM |
| spellingShingle | Huanyu Liu Shuang Wang Jian Liang Hong Hu Qingtao Li Hongrui Chen Effect of Lanthanum Oxide on the Microstructure and Properties of Ti-6Al-4V Alloy during CMT-Additive Manufacturing Crystals cold metal transfer Ti-6Al-4V alloy lanthanum oxide microstructure properties WAAM |
| title | Effect of Lanthanum Oxide on the Microstructure and Properties of Ti-6Al-4V Alloy during CMT-Additive Manufacturing |
| title_full | Effect of Lanthanum Oxide on the Microstructure and Properties of Ti-6Al-4V Alloy during CMT-Additive Manufacturing |
| title_fullStr | Effect of Lanthanum Oxide on the Microstructure and Properties of Ti-6Al-4V Alloy during CMT-Additive Manufacturing |
| title_full_unstemmed | Effect of Lanthanum Oxide on the Microstructure and Properties of Ti-6Al-4V Alloy during CMT-Additive Manufacturing |
| title_short | Effect of Lanthanum Oxide on the Microstructure and Properties of Ti-6Al-4V Alloy during CMT-Additive Manufacturing |
| title_sort | effect of lanthanum oxide on the microstructure and properties of ti 6al 4v alloy during cmt additive manufacturing |
| topic | cold metal transfer Ti-6Al-4V alloy lanthanum oxide microstructure properties WAAM |
| url | https://www.mdpi.com/2073-4352/13/3/515 |
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