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ChemistryInorganic Chemistry

A Study of Al2Ti Precipitation in a Cu-Modified Al3Ti Alloy

Authors: L. Potez; A. Loiseau; S. Naka; G. Lapasset; OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES CHATILLON-SOUS-BAGNEUX (FRANCE)
Abstract:
An equilibrium precipitation of Al2Ti is shown to occur within a Cu- modified Al3Ti alloy having the L1(2) structure; this precipitation is analyzed by conventional and high resolution electron microscopy and some insights are given concerning the mechanisms of nucleation and growth of Al2Ti within the L1(2) matrix; in the meantime, Vickers microhardness tests have been performed as a first approach to the mechanical behavior of this alloy and the results are compared to measurements obtained in an actual single-phased Li(2) compound; the Al2Ti precipitation seems to have an important hardening effect.

Description: Journal article
Pages: 7
Report Date: 92
Report Number: D599741

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