Cargando…
Research on Mechanisms and Controlling Methods of Macro Defects in TC4 Alloy Fabricated by Wire Additive Manufacturing
Wire feeding additive manufacturing (WFAM) has broad application prospects because of its advantages of low cost and high efficiency. However, with the mode of lateral wire feeding, including wire and laser additive manufacturing, gas tungsten arc additive manufacturing etc., it is easy to generate...
Autores principales: | , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6073151/ https://www.ncbi.nlm.nih.gov/pubmed/29958436 http://dx.doi.org/10.3390/ma11071104 |
_version_ | 1783344128275251200 |
---|---|
author | Ji, Lei Lu, Jiping Tang, Shuiyuan Wu, Qianru Wang, Jiachen Ma, Shuyuan Fan, Hongli Liu, Changmeng |
author_facet | Ji, Lei Lu, Jiping Tang, Shuiyuan Wu, Qianru Wang, Jiachen Ma, Shuyuan Fan, Hongli Liu, Changmeng |
author_sort | Ji, Lei |
collection | PubMed |
description | Wire feeding additive manufacturing (WFAM) has broad application prospects because of its advantages of low cost and high efficiency. However, with the mode of lateral wire feeding, including wire and laser additive manufacturing, gas tungsten arc additive manufacturing etc., it is easy to generate macro defects on the surface of the components because of the anisotropy of melted wire, which limits the promotion and application of WFAM. In this work, gas tungsten arc additive manufacturing with lateral wire feeding is proposed to investigate the mechanisms of macro defects. The results illustrate that the defect forms mainly include side spatters, collapse, poor flatness, and unmelted wire. It was found that the heat input, layer thickness, tool path, and wire curvature can have an impact on the macro defects. Side spatters are the most serious defects, mainly because the droplets cannot be transferred to the center of the molten pool in the lateral wire feeding mode. This research indicates that the macro defects can be controlled by optimizing the process parameters. Finally, block parts without macro defects were fabricated, which is meaningful for the further application of WFAM. |
format | Online Article Text |
id | pubmed-6073151 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-60731512018-08-13 Research on Mechanisms and Controlling Methods of Macro Defects in TC4 Alloy Fabricated by Wire Additive Manufacturing Ji, Lei Lu, Jiping Tang, Shuiyuan Wu, Qianru Wang, Jiachen Ma, Shuyuan Fan, Hongli Liu, Changmeng Materials (Basel) Article Wire feeding additive manufacturing (WFAM) has broad application prospects because of its advantages of low cost and high efficiency. However, with the mode of lateral wire feeding, including wire and laser additive manufacturing, gas tungsten arc additive manufacturing etc., it is easy to generate macro defects on the surface of the components because of the anisotropy of melted wire, which limits the promotion and application of WFAM. In this work, gas tungsten arc additive manufacturing with lateral wire feeding is proposed to investigate the mechanisms of macro defects. The results illustrate that the defect forms mainly include side spatters, collapse, poor flatness, and unmelted wire. It was found that the heat input, layer thickness, tool path, and wire curvature can have an impact on the macro defects. Side spatters are the most serious defects, mainly because the droplets cannot be transferred to the center of the molten pool in the lateral wire feeding mode. This research indicates that the macro defects can be controlled by optimizing the process parameters. Finally, block parts without macro defects were fabricated, which is meaningful for the further application of WFAM. MDPI 2018-06-28 /pmc/articles/PMC6073151/ /pubmed/29958436 http://dx.doi.org/10.3390/ma11071104 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Ji, Lei Lu, Jiping Tang, Shuiyuan Wu, Qianru Wang, Jiachen Ma, Shuyuan Fan, Hongli Liu, Changmeng Research on Mechanisms and Controlling Methods of Macro Defects in TC4 Alloy Fabricated by Wire Additive Manufacturing |
title | Research on Mechanisms and Controlling Methods of Macro Defects in TC4 Alloy Fabricated by Wire Additive Manufacturing |
title_full | Research on Mechanisms and Controlling Methods of Macro Defects in TC4 Alloy Fabricated by Wire Additive Manufacturing |
title_fullStr | Research on Mechanisms and Controlling Methods of Macro Defects in TC4 Alloy Fabricated by Wire Additive Manufacturing |
title_full_unstemmed | Research on Mechanisms and Controlling Methods of Macro Defects in TC4 Alloy Fabricated by Wire Additive Manufacturing |
title_short | Research on Mechanisms and Controlling Methods of Macro Defects in TC4 Alloy Fabricated by Wire Additive Manufacturing |
title_sort | research on mechanisms and controlling methods of macro defects in tc4 alloy fabricated by wire additive manufacturing |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6073151/ https://www.ncbi.nlm.nih.gov/pubmed/29958436 http://dx.doi.org/10.3390/ma11071104 |
work_keys_str_mv | AT jilei researchonmechanismsandcontrollingmethodsofmacrodefectsintc4alloyfabricatedbywireadditivemanufacturing AT lujiping researchonmechanismsandcontrollingmethodsofmacrodefectsintc4alloyfabricatedbywireadditivemanufacturing AT tangshuiyuan researchonmechanismsandcontrollingmethodsofmacrodefectsintc4alloyfabricatedbywireadditivemanufacturing AT wuqianru researchonmechanismsandcontrollingmethodsofmacrodefectsintc4alloyfabricatedbywireadditivemanufacturing AT wangjiachen researchonmechanismsandcontrollingmethodsofmacrodefectsintc4alloyfabricatedbywireadditivemanufacturing AT mashuyuan researchonmechanismsandcontrollingmethodsofmacrodefectsintc4alloyfabricatedbywireadditivemanufacturing AT fanhongli researchonmechanismsandcontrollingmethodsofmacrodefectsintc4alloyfabricatedbywireadditivemanufacturing AT liuchangmeng researchonmechanismsandcontrollingmethodsofmacrodefectsintc4alloyfabricatedbywireadditivemanufacturing |