Chenyang Wang , Xiangyu Liu , Fei Xing , Guojian Xu , Hongyou Bian , Weijun Liu
{"title":"通过线-粉喂激光定向能沉积法制造的 TiC/Ti6Al4V 复合材料的微观结构和力学性能","authors":"Chenyang Wang , Xiangyu Liu , Fei Xing , Guojian Xu , Hongyou Bian , Weijun Liu","doi":"10.1016/j.optlastec.2024.111836","DOIUrl":null,"url":null,"abstract":"<div><div>Laser-directed energy deposition concurrent wire-powder feeding (L-DED-WP) combines the advantages of wire-feeding and powder-feeding laser deposition, offering a novel method for fabricating metal matrix composites at a lower cost and higher efficiency. This work successfully produced defect-free Ti6Al4V alloy and TiC/Ti6Al4V composites using wire-feeding laser deposition and L-DED-WP, respectively. L-DED-WP process was achieved by lateral feeding of Ti6Al4V wire and coaxial feeding of TiC particles, with an additional TiC content of 2.93 wt%. The microstructure characteristics and mechanical performance of Ti6Al4V alloy and TiC/Ti6Al4V composites were analysed. The results indicate that after adding TiC particles, the in-situ eutectic-TiC precipitated in the matrix. Due to the uneven distribution of TiC particles along the build direction during solidification, the quantity of eutectic-TiC gradually increased from the bottom to the middle and top regions of the deposition layer. Correspondingly, the morphology of eutectic-TiC was granular at the bottom, short rod-like in the middle, and a mix of both granular and short rod-like in the top region. Additionally, the eutectic-TiC served as heterogeneous nucleation sites, promoting the refinement and inhibiting the growth of α-Ti, resulting in a decreased aspect ratio of α-Ti and texture strength. Compared to Ti6Al4V, the yield strength of TiC/Ti6Al4V increased by 11.19 %, while the tensile strength improved by 11.46 %. However, during the tensile testing, the non-uniformly distributed brittle eutectic-TiC could only release stress by fracturing, resulting in a 2.57 % decrease in elongation.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"181 ","pages":"Article 111836"},"PeriodicalIF":4.6000,"publicationDate":"2024-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Microstructure and mechanical properties of TiC/Ti6Al4V composite fabricated by concurrent wire-powder feeding laser-directed energy deposition\",\"authors\":\"Chenyang Wang , Xiangyu Liu , Fei Xing , Guojian Xu , Hongyou Bian , Weijun Liu\",\"doi\":\"10.1016/j.optlastec.2024.111836\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Laser-directed energy deposition concurrent wire-powder feeding (L-DED-WP) combines the advantages of wire-feeding and powder-feeding laser deposition, offering a novel method for fabricating metal matrix composites at a lower cost and higher efficiency. This work successfully produced defect-free Ti6Al4V alloy and TiC/Ti6Al4V composites using wire-feeding laser deposition and L-DED-WP, respectively. L-DED-WP process was achieved by lateral feeding of Ti6Al4V wire and coaxial feeding of TiC particles, with an additional TiC content of 2.93 wt%. The microstructure characteristics and mechanical performance of Ti6Al4V alloy and TiC/Ti6Al4V composites were analysed. The results indicate that after adding TiC particles, the in-situ eutectic-TiC precipitated in the matrix. Due to the uneven distribution of TiC particles along the build direction during solidification, the quantity of eutectic-TiC gradually increased from the bottom to the middle and top regions of the deposition layer. Correspondingly, the morphology of eutectic-TiC was granular at the bottom, short rod-like in the middle, and a mix of both granular and short rod-like in the top region. Additionally, the eutectic-TiC served as heterogeneous nucleation sites, promoting the refinement and inhibiting the growth of α-Ti, resulting in a decreased aspect ratio of α-Ti and texture strength. Compared to Ti6Al4V, the yield strength of TiC/Ti6Al4V increased by 11.19 %, while the tensile strength improved by 11.46 %. However, during the tensile testing, the non-uniformly distributed brittle eutectic-TiC could only release stress by fracturing, resulting in a 2.57 % decrease in elongation.</div></div>\",\"PeriodicalId\":19511,\"journal\":{\"name\":\"Optics and Laser Technology\",\"volume\":\"181 \",\"pages\":\"Article 111836\"},\"PeriodicalIF\":4.6000,\"publicationDate\":\"2024-09-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Optics and Laser Technology\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0030399224012945\",\"RegionNum\":2,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"OPTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics and Laser Technology","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0030399224012945","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"OPTICS","Score":null,"Total":0}
Microstructure and mechanical properties of TiC/Ti6Al4V composite fabricated by concurrent wire-powder feeding laser-directed energy deposition
Laser-directed energy deposition concurrent wire-powder feeding (L-DED-WP) combines the advantages of wire-feeding and powder-feeding laser deposition, offering a novel method for fabricating metal matrix composites at a lower cost and higher efficiency. This work successfully produced defect-free Ti6Al4V alloy and TiC/Ti6Al4V composites using wire-feeding laser deposition and L-DED-WP, respectively. L-DED-WP process was achieved by lateral feeding of Ti6Al4V wire and coaxial feeding of TiC particles, with an additional TiC content of 2.93 wt%. The microstructure characteristics and mechanical performance of Ti6Al4V alloy and TiC/Ti6Al4V composites were analysed. The results indicate that after adding TiC particles, the in-situ eutectic-TiC precipitated in the matrix. Due to the uneven distribution of TiC particles along the build direction during solidification, the quantity of eutectic-TiC gradually increased from the bottom to the middle and top regions of the deposition layer. Correspondingly, the morphology of eutectic-TiC was granular at the bottom, short rod-like in the middle, and a mix of both granular and short rod-like in the top region. Additionally, the eutectic-TiC served as heterogeneous nucleation sites, promoting the refinement and inhibiting the growth of α-Ti, resulting in a decreased aspect ratio of α-Ti and texture strength. Compared to Ti6Al4V, the yield strength of TiC/Ti6Al4V increased by 11.19 %, while the tensile strength improved by 11.46 %. However, during the tensile testing, the non-uniformly distributed brittle eutectic-TiC could only release stress by fracturing, resulting in a 2.57 % decrease in elongation.
期刊介绍:
Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication.
The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas:
•development in all types of lasers
•developments in optoelectronic devices and photonics
•developments in new photonics and optical concepts
•developments in conventional optics, optical instruments and components
•techniques of optical metrology, including interferometry and optical fibre sensors
•LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow
•applications of lasers to materials processing, optical NDT display (including holography) and optical communication
•research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume)
•developments in optical computing and optical information processing
•developments in new optical materials
•developments in new optical characterization methods and techniques
•developments in quantum optics
•developments in light assisted micro and nanofabrication methods and techniques
•developments in nanophotonics and biophotonics
•developments in imaging processing and systems