Role of Equiaxed Primary Alpha (α׳) and Mechanical Properties of Ti-6Al-4V Alloy

A. Ahmad; Amjad Ali; G.H. Awan; Khalid Mehmood Ghauri; R. Aslam

doi:10.4028/www.scientific.net/KEM.510-511.420

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 510-511Role of Equiaxed Primary Alpha (α׳) and Mechanical...

Role of Equiaxed Primary Alpha (α׳) and Mechanical Properties of Ti-6Al-4V Alloy

Abstract:

The paper presents the role of equiaxed α׳ in the bimodal microstructure to attain an optimal combination of ductility and strength. The study revealed that the production of bimodal microstructure and volume fraction of equiaxed α׳ were reliant on the forging temperature and subsequent heat treatment. The Ti-6Al-4V alloy was forged in the two phase region and different heat treatment cycles were employed to get the desired bimodal microstructure and thus the combination of strength and ductility. The mechanical properties of fully lamellar microstructure were compared with bimodal microstructure containing equiaxed α׳. The experimental results showed that the amount of equiaxed α׳ in the bimodal microstructure was critical for achieving a well-balanced profile of mechanical properties.

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Periodical:

Key Engineering Materials (Volumes 510-511)

Pages:

420-428

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.510-511.420

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Online since:

May 2012

Authors:

A. Ahmad, Amjad Ali, G.H. Awan, Khalid Mehmood Ghauri, R. Aslam

Keywords:

Bimodal Microstructure, Equiaxed Primary Alpha (α׳), Heat Treatment, Lamellar Microstructure, α+β Alloy

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