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Influence of Cr on the microstructure and mechanical properties of Ti–Si Eutectic Alloys

  • Yongzhong Zhan , Linbin He , Jianbo Ma , Xinjiang Zhang and Zhaohua Hu
Published/Copyright: June 11, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 100 Issue 5

Abstract

As promising candidates for new high-temperature structural materials, Ti – Si eutectic alloys are required for the next generation of advanced aircraft engines. In this paper, microstructures of the Ti – Si eutectic alloys with various Cr contents were investigated by means of X-ray diffraction, scanning electron microscopy and light optical microscopy. The results show that with the increase of Cr content up to 9 wt.%, β-Ti (Si, Cr)ss matrix and Ti5Si3 form in the as cast alloy, however, the α-Ti (Si, Cr)ss phase disappears. Cr element solute in β-Ti and Ti5Si3 can significantly change the morphology and distribution of Ti5Si3 intermetallic phase. This greatly affects the fracture behavior and mechanical properties of as-cast Ti – Si eutectic alloys.

Keywords: Ti – Si alloy; Mechanical properties; Microstructure; X-ray diffraction; Scanning electron microscopy
* Correspondence address, Dr. Yongzhong Zhan, Institute of Materials Science, School of Materials Science and Engineering, Guangxi University, Nanning, Guangxi 530004, P.R. China, Tel.: +86 771 323 3530, E-mail:

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Received: 2008-6-9
Accepted: 2008-11-21
Published Online: 2013-06-11
Published in Print: 2009-05-01

© 2009, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.110088
Keywords for this article
Ti – Si alloy; Mechanical properties; Microstructure; X-ray diffraction; Scanning electron microscopy

Articles in the same Issue

  1. Contents
  2. Contents
  3. Feature
  4. Nd–Fe–B permanent magnets a quarter century later: implications for patentability
  5. Micromagnetism of advanced hard magnetic materials
  6. Magnetism of nanostructured materials for advanced magnetic recording
  7. Basic
  8. A Study of the Al–Mg–B Ternary Phase Diagram
  9. Effects of Lanthanum on Magnetic Behavior and Hardness of Electroless Ni–Fe–P Deposits
  10. Interfacial Reactions between Lead-Free Solders and the Multilayer Au/Ni/SUS304 Substrate
  11. Melting Behavior of Sn–Bi Alloy Powder Compacts Observed Using Optical Dilatometry
  12. High-Strength Mg-Based Bulk Metallic Glass Composites with Remarkable Plasticity
  13. Determination of Liquidus Temperature in Sn–Ti–Zr Alloys by Viscosity, Electrical Conductivity and XRD Measurements
  14. The coupled FEM analysis of super-high angular speed polishing of diamond films
  15. Applied
  16. Comparison of Depth-Sensing Indentation at Ultramicroscopic Contacts by Single- and Multiple-Partial-Unload Cycles
  17. Sintering Behavior of ZnO: Mn Ceramics Fabricated from Sol-Gel Derived Nanocrystalline powders
  18. Suitability of Maraging Steel Weld Cladding for Repair of Die-Casting Tooling
  19. Enhanced properties of functionally graded Cu–Cr powder compacts
  20. Influence of Cr on the microstructure and mechanical properties of Ti–Si Eutectic Alloys
  21. Notifications
  22. DGM News
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