Title

Low-Temperature Superplasticity In Ultrafine-Grained Ti5Si3-Tial Composites

Keywords

Ceramic-intermetallic composite; Mechanical alloying; Superplasticity; Tension test; Transmission electron microscopy (TEM)

Abstract

A ceramic-intermetallic composite of Ti5Si3 with 40 vol.% TiAl was synthesized by mechanical alloying and hot isostatic pressing. The microstructure consisted of equiaxed grains of γ-TiAl and ζ-Ti5Si3 with a size of about 400 nm. This composite exhibited a tensile elongation of 150% at 950 °C, using a strain rate of 4 × 10-5 s-1. This temperature for superplastic deformation is just about 0.5 Tm, the lowest normalized superplastic temperature reported for any ceramic-based material. © 2008 Acta Materialia Inc.

Publication Date

8-1-2008

Publication Title

Scripta Materialia

Volume

59

Issue

4

Number of Pages

455-458

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.scriptamat.2008.04.029

Socpus ID

44749088804 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/44749088804

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