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Verification of strength mis-match of electron beam welded heavy thickness titanium alloy

  • Pengfei Fu , Zhiyong Mao , Shuili Gong , Zhenyun Tang and Congjin Zuo
Published/Copyright: May 4, 2017
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 108 Issue 5

Abstract

Electron beam welding was employed on Ti-6Al-4V ELI alloy with 50 mm thickness. The weld morphologies were I and T shape, respectively with and without oscillation. The microhardness profiles and tensile properties of the welds were measured along the penetration, and the mis-match was investigated. The maximum microhardness was in the welds and was at least 1.06 times that of the base metal. In addition, the hardness distribution of the I shape weld was more homogeneous than that of the T shape. The tensile strengths of the welds were higher than the base metal, and the properties of the I shape weld were more homogeneous. The mis-match factors of the welds were above 1.0, and the strengths of the joints were equivalent to the base metal, which verified the overmatching. The microstructure and hardness difference resulted in inhomogeneous stress–strain behavior of the joint, which contributed to the overmatching.

Keywords: Electron beam welding; Weld morphology; Microhardness; Yield strength; Mis-match
*Correspondence address, Dr. Pengfei Fu, Science and Technology on Power Beam Processes Laboratory, Beijing Aeronautical Manufacturing Technology Research Institute, No. 1, Baliqiaobei, Chaoyang Dist., Beijing 100024, P. R. China, Tel.: +86-10-85701588, Fax: +86-10-85701491, E-mail:

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Received: 2016-11-21
Accepted: 2017-02-14
Published Online: 2017-05-04
Published in Print: 2017-05-15

© 2017, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111495
Keywords for this article
Electron beam welding; Weld morphology; Microhardness; Yield strength; Mis-match

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Downloads and the impact of Open Access at IJMR
  5. Original Contributions
  6. A material selection approach using the TODIM (TOmada de Decisao Interativa Multicriterio) method and its analysis
  7. Investigation of the influence of Fe on the microstructure and properties of Ti5553 near-β titanium alloy with combinatorial approach
  8. Evolution of the temperature, microstructures and microsegregation in equiaxed solidification of Al-5 wt.% Cu alloy
  9. Phase composition and microstructure of materials in the Ir–Ru–B system prepared by arc melting and VHP sintering
  10. Thermal shock behavior of rare earth modified alumina ceramic composites
  11. Investigation of tribological and corrosion properties of CuTi–alumina nanocomposite fabricated by mechanical alloying
  12. Effect of acetic acid on corrosion behavior of AISI 201, 304 and 430 stainless steels
  13. Verification of strength mis-match of electron beam welded heavy thickness titanium alloy
  14. Short Communications
  15. Effect of toughening Fe2B by the addition of tungsten on the wear resistance of Fe–B–C alloy
  16. Microstructural stability of heat-resistant high-pressure die-cast Mg-4Al-4Ce alloy
  17. DGM News
  18. DGM News
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