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Microstructure Evolution of TiC Particles In Situ, Synthesized by Laser Cladding
In this paper, a TiC reinforcement metal matrix composite coating is produced using nickel and graphite mixing powder on the surface ofTi-6Al-4V alloy by laser radiation. The microstructure of the coatings is investigated by XRD, SEM and EDS. Results show that most of the TiC phase is granular, with...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5503329/ https://www.ncbi.nlm.nih.gov/pubmed/28772641 http://dx.doi.org/10.3390/ma10030281 |
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author | Liu, Yanhui Ding, Jieqiong Qu, Weicheng Su, Yu Yu, Zhishui |
author_facet | Liu, Yanhui Ding, Jieqiong Qu, Weicheng Su, Yu Yu, Zhishui |
author_sort | Liu, Yanhui |
collection | PubMed |
description | In this paper, a TiC reinforcement metal matrix composite coating is produced using nickel and graphite mixing powder on the surface ofTi-6Al-4V alloy by laser radiation. The microstructure of the coatings is investigated by XRD, SEM and EDS. Results show that most of the TiC phase is granular, with a size of several micrometers, and a few of the TiC phases are petals or flakes. At the cross-section of the coatings, a few special TiC patterns are found and these TiC patterns do not always occur at the observed cross-section. The even distribution of the TiC phase in the coatings confirms that the convection of the laser-melted pool leads to the homogenization of titanium atoms from the molten substrate, and carbon atoms from the preplace powder layer, by the mass transfer. The characteristics of the TiC pattern confirm that the morphology and distribution of the primary TiC phase could be influenced by convection. Two main reasons for this are that the density of the TiC phase is lower than the liquid melt, and that the primary TiC phase precipitates from the pool with a high convection speed at high temperature. |
format | Online Article Text |
id | pubmed-5503329 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-55033292017-07-28 Microstructure Evolution of TiC Particles In Situ, Synthesized by Laser Cladding Liu, Yanhui Ding, Jieqiong Qu, Weicheng Su, Yu Yu, Zhishui Materials (Basel) Article In this paper, a TiC reinforcement metal matrix composite coating is produced using nickel and graphite mixing powder on the surface ofTi-6Al-4V alloy by laser radiation. The microstructure of the coatings is investigated by XRD, SEM and EDS. Results show that most of the TiC phase is granular, with a size of several micrometers, and a few of the TiC phases are petals or flakes. At the cross-section of the coatings, a few special TiC patterns are found and these TiC patterns do not always occur at the observed cross-section. The even distribution of the TiC phase in the coatings confirms that the convection of the laser-melted pool leads to the homogenization of titanium atoms from the molten substrate, and carbon atoms from the preplace powder layer, by the mass transfer. The characteristics of the TiC pattern confirm that the morphology and distribution of the primary TiC phase could be influenced by convection. Two main reasons for this are that the density of the TiC phase is lower than the liquid melt, and that the primary TiC phase precipitates from the pool with a high convection speed at high temperature. MDPI 2017-03-11 /pmc/articles/PMC5503329/ /pubmed/28772641 http://dx.doi.org/10.3390/ma10030281 Text en © 2017 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 Liu, Yanhui Ding, Jieqiong Qu, Weicheng Su, Yu Yu, Zhishui Microstructure Evolution of TiC Particles In Situ, Synthesized by Laser Cladding |
title | Microstructure Evolution of TiC Particles In Situ, Synthesized by Laser Cladding |
title_full | Microstructure Evolution of TiC Particles In Situ, Synthesized by Laser Cladding |
title_fullStr | Microstructure Evolution of TiC Particles In Situ, Synthesized by Laser Cladding |
title_full_unstemmed | Microstructure Evolution of TiC Particles In Situ, Synthesized by Laser Cladding |
title_short | Microstructure Evolution of TiC Particles In Situ, Synthesized by Laser Cladding |
title_sort | microstructure evolution of tic particles in situ, synthesized by laser cladding |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5503329/ https://www.ncbi.nlm.nih.gov/pubmed/28772641 http://dx.doi.org/10.3390/ma10030281 |
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