Paper Title:
Improved Mechanical Properties of Ti2AlNb-Based Intermetallic Alloys and Composites
  Abstract

Mechanical properties of a Ti2AlNb-based intermetallic alloy both at room and elevated temperatures were considerably improved due to formation of a homogeneous microstructure with the average grain size of about 300 nm. At room temperature, elongations up to 25% were obtained and the ultimate strength reached 1400 MPa. The alloy exhibited superplastic behavior in the temperature range of 850-1000°C. The maximum elongation of 930% and steady state flow stress 50 of about 125 MPa were obtained at 900°C and strain rate of 4.210-3 s-1. The nanostructured material was used for production of intermetallic sheets and multilayer composite plates consisting of alternating layers of orthorhombic intermetallic and commercial high temperature titanium alloy. Ti2AlNb-based sheets and composites exhibited improved mechanical properties.

  Info
Periodical
Edited by
Ch. Linsmeier and M. Reinelt
Pages
105-108
DOI
10.4028/www.scientific.net/AMR.59.105
Citation
M.R. Shagiev, R.M. Galeyev, O. R. Valiakhmetov, R. V. Safiullin, "Improved Mechanical Properties of Ti2AlNb-Based Intermetallic Alloys and Composites", Advanced Materials Research, Vol. 59, pp. 105-108, 2009
Online since
December 2008
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$32.00
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