Microstructure and Mechanical Properties of LaB6/Ti-6Al-4V Composites Fabricated by Selective Laser Melting

被引:10
|
作者
He, Dongdong [1 ,2 ]
Wang, Hui [1 ,2 ]
Huang, Weidong [1 ,2 ]
Chen, Xinxi [1 ,2 ]
Lian, Guofu [2 ]
Wang, Yu [1 ,2 ]
机构
[1] Fujian Key Lab Intelligent Machining Technol & Equ, Fuzhou 350118, Peoples R China
[2] Fujian Univ Technol, Sch Mech & Automot Engn, Fuzhou 350118, Peoples R China
基金
中国国家自然科学基金;
关键词
selective laser melting; LaB6; Ti-6Al-4V; fabricating property; microstructure; mechanical properties; IN-SITU; TENSILE PROPERTIES; MATRIX COMPOSITES; EVOLUTION; ALLOY; METAL; BEHAVIOR;
D O I
10.3390/met13020264
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In this study, TiB + La2O3/Ti-6Al-4V composites were successfully prepared by in situ reaction using selective laser melting technology. The effect of LaB6 content on the fabrication quality, microstructure evolution and mechanical properties of the composite samples was investigated. The results show that the relative density of the sample gradually decreased from 98.56% to 96.57% as LaB6 content increased from 0 wt% to 3 wt%. With increasing LaB6 content, TiB precipitates gradually aggregated and grew from a discrete needle-like structure to a dendritic structure, before eventually developing a cell-like structure. The dislocations piled up around the TiB and La2O3 reinforcements, which impeded the motion of the dislocations and led to the enhancement of the tensile strength of the samples. Different from the addition of a single reinforcement due to the combined strengthening effect of the micrometer-scale and nanoscale reinforcements, the strength of the samples was increased significantly. The Ti-6Al-4V sample with 3 wt% LaB6 addition showed the most significant strengthening effect. Compared to the pure Ti-6Al-4V sample, the 3 wt% LaB6 addition sample gained a 35.71% increase in hardness and a 14.5% increase in tensile strength. Additionally, wear volume was reduced by 47.5%. The results revealed that the addition of LaB6 was a potential way to improve the mechanical performance of the titanium alloys in the additive manufacturing process.
引用
收藏
页数:20
相关论文
共 50 条
  • [1] Microstructure and Mechanical Properties of Ti-6Al-4V Fabricated by Selective Laser Melting
    Simonelli, Marco
    Tse, Yau Yau
    Tuck, Christopher
    TMS 2012 141ST ANNUAL MEETING & EXHIBITION - SUPPLEMENTAL PROCEEDINGS, VOL 1: MATERIALS PROCESSING AND INTERFACES, 2012, : 863 - 870
  • [2] Microstructure and inclusion of Ti-6Al-4V fabricated by selective laser melting
    Huang, Qianli
    Hu, Ningmin
    Yang, Xing
    Zhang, Ranran
    Feng, Qingling
    FRONTIERS OF MATERIALS SCIENCE, 2016, 10 (04) : 428 - 431
  • [3] Microstructure and Tensile Properties of Ti-6Al-4V Alloys Fabricated by Selective Laser Melting
    Li Huaixue
    Huang Baiying
    Sun Fan
    Gong Shuili
    RARE METAL MATERIALS AND ENGINEERING, 2013, 42 : 209 - 212
  • [4] Microstructure and Mechanical Properties of Ti-6Al-4V parts build by Selective Laser Melting
    Sakurai, Yuya
    Kakehi, Koji
    JOURNAL OF THE JAPAN INSTITUTE OF METALS AND MATERIALS, 2017, 81 (03) : 120 - 126
  • [5] Microstructure, Mechanical Properties, and Constitutive Models for Ti-6Al-4V Alloy Fabricated by Selective Laser Melting (SLM)
    Tao, Pan
    Zhong, Jiangwei
    Li, Huaixue
    Hu, Quandong
    Gong, Shuili
    Xu, Qingyan
    METALS, 2019, 9 (04):
  • [6] Microstructure and mechanical properties of open-cell porous Ti-6Al-4V fabricated by selective laser melting
    Chen, S. Y.
    Huang, J. C.
    Pan, C. T.
    Lin, C. H.
    Yang, T. L.
    Huang, Y. S.
    Ou, C. H.
    Chen, L. Y.
    Lin, D. Y.
    Lin, H. K.
    Li, T. H.
    Jang, J. S. C.
    Yang, C. C.
    JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 713 : 248 - 254
  • [7] Microstructure-Properties Relationships of Ti-6Al-4V Parts Fabricated by Selective Laser Melting
    Justin Mezzetta
    Joon-Phil Choi
    Jason Milligan
    Jason Danovitch
    Nejib Chekir
    Alexandre Bois-Brochu
    Yaoyao Fiona Zhao
    Mathieu Brochu
    International Journal of Precision Engineering and Manufacturing-Green Technology, 2018, 5 : 605 - 612
  • [8] Microstructure-Properties Relationships of Ti-6Al-4V Parts Fabricated by Selective Laser Melting
    Mezzetta, Justin
    Choi, Joon-Phil
    Milligan, Jason
    Danovitch, Jason
    Chekir, Nejib
    Bois-Brochu, Alexandre
    Zhao, Yaoyao Fiona
    Brochu, Mathieu
    INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING-GREEN TECHNOLOGY, 2018, 5 (05) : 605 - 612
  • [9] Microstructure and Mechanical Properties of Ti-6Al-4V Fabricated by Electron Beam Melting
    Ran, Jiangtao
    Jiang, Fengchun
    Sun, Xiaojing
    Chen, Zhuo
    Tian, Cao
    Zhao, Hong
    CRYSTALS, 2020, 10 (11): : 1 - 18
  • [10] Mechanical Properties of Porous Ti-6Al-4V Titanium Alloys Fabricated by Selective Laser Melting
    Qing, Li
    Zhao Guorui
    Yan Xingchen
    Ma Wenyou
    Yu Hongya
    Min, Liu
    LASER & OPTOELECTRONICS PROGRESS, 2019, 56 (01)