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Site Occupation of Ternary Element in an Alti Compound by Alchemi
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Site occupation of alloying additions in AlTi compounds is important for high temperature alloys development. In this paper, we intend to locate the ternary element Nb in an AITi compound using the ALCHEMI technique. With the L10_type structure, the planes of either (110) or (001) are composed of Al and Ti atoms alterately. Therefore, the ternary element dissolved in the AITi compound can be easily located by ALCHEMI technique[1,2].A Specimen of 51.1 at%Al-41.5at%Ti-7.4at%Nb alloy was used. The structure of this specimen is composed of AlTi, Ti3Al, and other intermetallic compounds which were examined by x_ray diffraction and electron diffraction. The electron micrograph of Fig. 1 shows the compounds structure with lamellar features. Lamellae of AlTi phase of about 1 μm in width were chosen for analysis. The composition of this AlTi phase is about 45at%Al, 44at%Ti, and 11 at%Nb by x_ray analysis in non_channelling condition.
Cambridge University Press (CUP)
Title: Site Occupation of Ternary Element in an Alti Compound by Alchemi
Description:
Site occupation of alloying additions in AlTi compounds is important for high temperature alloys development.
In this paper, we intend to locate the ternary element Nb in an AITi compound using the ALCHEMI technique.
With the L10_type structure, the planes of either (110) or (001) are composed of Al and Ti atoms alterately.
Therefore, the ternary element dissolved in the AITi compound can be easily located by ALCHEMI technique[1,2].
A Specimen of 51.
1 at%Al-41.
5at%Ti-7.
4at%Nb alloy was used.
The structure of this specimen is composed of AlTi, Ti3Al, and other intermetallic compounds which were examined by x_ray diffraction and electron diffraction.
The electron micrograph of Fig.
1 shows the compounds structure with lamellar features.
Lamellae of AlTi phase of about 1 μm in width were chosen for analysis.
The composition of this AlTi phase is about 45at%Al, 44at%Ti, and 11 at%Nb by x_ray analysis in non_channelling condition.
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