EFFECT OF THIRD ALLOYING ELEMENTS ON DOUBLE-PHASE STRUCTURE OF TiAI BASE ALLOYS

Acta Metall Sin

1993, Vol. 29

Issue (4): 13-18 DOI:

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EFFECT OF THIRD ALLOYING ELEMENTS ON DOUBLE-PHASE STRUCTURE OF TiAI BASE ALLOYS

XIE Yingxiu;CAO Mingzhou;XU Zengji Institute of Metal Research; Academia Sinica; Shenyang associate professor;Institute of Metal Research;Academia Sinica; Shenyang 110015

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XIE Yingxiu;CAO Mingzhou;XU Zengji Institute of Metal Research; Academia Sinica; Shenyang associate professor;Institute of Metal Research;Academia Sinica; Shenyang 110015. EFFECT OF THIRD ALLOYING ELEMENTS ON DOUBLE-PHASE STRUCTURE OF TiAI BASE ALLOYS. Acta Metall Sin, 1993, 29(4): 13-18.

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Abstract The phasse transformation temperature of α→α+γ and the volume fractions ofprimary γ-phase and lamellar zone after solution treatment at different temperatures were de-termined for Ti_(50)Al_(48)M_2(M=Ti, V, Cr, Mn, Zr, Ga, Cu and Nb) alloys. The thickness of γand α_2 lamellae in lamellar zone of some Ti_(50)Al_(48)M_2 alloys and the concentration of Al, Cr,Mn, Nb in α and γ_p phases were measured statistically. These results seem to be available toselect reasonably the third alloying element and heat treatment regime of TiAl base alloy.

Key words: TiAl alloy alloying element volume fraction lamellae thickness

Received: 18 April 1993

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