+Advanced Search
Parametric investigation on Ti6Al4V single beads produced by electron beam freeform fabrication: Geometry, microstructure, composition and hardness
Author:
Affiliation:

School of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics

Clc Number:

Fund Project:

NSFC(Grant No.51975286), Postgraduate Research & Practice Innovation Program of Jiangsu Province (Grant No. KYCX18_0272); Opening Project of Jiangsu Key Laboratory of Advanced Metallic Materials; Priority Academic Program Development of Jiangsu Higher Education Institution

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    Ti6Al4V single beads were prepared by electron beam freeform fabrication (EBF3) to investigate their geometry, microstructure, composition and the resulting hardness in terms of the wire-feed rate, beam power and travel speed. Results showed that an increased wire-feed rate favored to increase the deposition efficiency and geometry accuracy, but it required an affordable heat input to success in deposition. The narrowed columnar β grains filled with the fine microstructural features inside and the decreased Al evaporation loss were available at an increased wire-feed rate/travel speed or a decreased beam power, which was attributed to the decreased temperature and dimension of molten pool. Therefore, the beads produced at such process variables possess the increased hardness. This investigation reveals the correlation between the process parameters and the process outcomes of deposited beads, which offers a valuable guidance for accurate manufacturing of multi-layered components with reliable microstructure and mechanical properties.

    Reference
    Related
    Cited by
Get Citation

[Xuewei Tao, Zhengjun Yao, Shasha Zhang. Parametric investigation on Ti6Al4V single beads produced by electron beam freeform fabrication: Geometry, microstructure, composition and hardness[J]. Rare Metal Materials and Engineering,2020,49(9):2913~2919.]
DOI:10.12442/j. issn.1002-185X. E20190090

Copy
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:June 11,2019
  • Revised:November 12,2019
  • Adopted:November 12,2019
  • Online: October 15,2020
  • Published: