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Strengthening and toughening of laminated TiAl composite sheets by titanium alloy layers and carbide particles

  • Taotao Ai , Qunfei Niu , Zhifeng Deng , Xinqiang Yuan and Wenhu Li
Published/Copyright: August 7, 2019
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 110 Issue 8

Abstract

Laminated sheets with Ti2AlC/TiAl composite layers synthesized from the Ti–Al–TiC system and TC4 titanium alloy as the toughening layer were fabricated by spark plasma sintering. Their phase composition and microstructure were analyzed and flexural strength and fracture toughness measured. The composite layers mainly comprised Ti2AlC, TiC, TiAl, and Ti3Al phases. The flexural strength and fracture toughness of the sheets perpendicular to the laminated direction were 455.74 MPa and 21.65 MPa · m1/2, respectively. The TC4 layers provided a strengthening–toughening effect by changing the crack propagation model and weakening the fracture energy. Ti2AlC particles provided a strengthening effect. The synergistic effect of the two components enhanced the mechanical properties of these TiAl-based laminated composite sheets.

Keywords: Ti2AlC/TiAl composite; Spark plasma sintering; Laminated structure; Mechanical properties
∗Correspondence address, Taotao Ai, Qunfei Niu, National and Local Joint Engineering Laboratory for Slag Comprehensive Utilization and Environmental Technology, School of Materials Science and Engineering, Shaanxi University of Technology, Hantai district, Shaanxi Hanzhong 723000, P.R. China, Tel.: +86 916 2641576, Fax: +86 916 2641576, e-mail: ,

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Received: 2019-01-14
Accepted: 2019-03-06
Published Online: 2019-08-07
Published in Print: 2019-08-12

© 2019, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111795
Keywords for this article
Ti2AlC/TiAl composite; Spark plasma sintering; Laminated structure; Mechanical properties

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Dendritic solidification of highly undercooled dilute alloys
  5. Dendritic structure formation of magnesium alloys for the manipulation of corrosion properties: Part 2 – corrosion
  6. Thermodynamic properties of cerium molybdate
  7. A new approach to reduce springback in sheet metal bending using digital image correlation
  8. Effects of minor La and Ce additions on microstructure and mechanical properties of A201 alloy
  9. Strengthening and toughening of laminated TiAl composite sheets by titanium alloy layers and carbide particles
  10. A fractal analysis for the microstructures of β-SiC films
  11. Synthesis of La2(Zr0.7Ce0.3)2O7 nanopowder using a simple chemical precipitation method and heat treatment at high temperature
  12. Optimized microstructure with alumina micropowder and its effects on properties of phosphate-bonded castables
  13. Co-deposition and electrokinetic behavior of TiO2–WO3 nanoparticles under non-uniform AC field
  14. 3D nanoflower-structured TiO2 photoanode for efficient photoelectrochemical water splitting
  15. Short Communications
  16. Investigation of Al2O3/TiB2 ceramic cutting tool materials with the addition of core–shell structured Ni–B coated CaF2
  17. DGM News
  18. DGM News
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