A STUDY OF THE T<SUB>1</SUB>' PHASE IN THE Al-2.6Li-1.3Cu ALLOY ELECTRO-SUPERPLASTICITY IN 209 1 Al-Li ALLOYO

ISSN: 1003-6326
CN: 43-1239/TG
CODEN: TNMCEW

Vol. 4 No. 1 March 1994

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A STUDY OF THE T₁' PHASE IN THE Al-2.6Li-1.3Cu ALLOY ELECTRO-SUPERPLASTICITY IN 209 1 Al-Li ALLOYO

Cui Yuexian; Sun Dongli; Mao Jianfu; Yang Dezhuang

(Harbin Institute of Technology，Harbin 150006 China)

Abstract: T₁'phase in Al-2. 6Li-1. 3Cu alloy was studied systematically by selected area electrondiffraction , serial rotution and matrix analysis of electron diffraction pattern. The results showthat the crystalline structure of T₁'phase is orthohombic. The lattice parameters are a =0. 2876 nm, b = 0. 86 nm , c = 0. 406 nm , and orientation relationship with the matrix is(010) T₁'//(110)_α，[001] _T1'//[100]_α

Key words: AI-Li alloy T₁' phase orientation relationship crystalline structure

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