Coexistence of adjacent vacancy-ordered and eutectic phases in Al–Cu–Ni alloys. (2nd November 2018)

• Record Type: Journal Article
• Authors: Maity, Shubhadeep; Chanda, Dipak Kr; Ramasamy, Parthiban; Show, Bijay Kumar; Eckert, Jürgen; Bera, Supriya
• Is Part Of: Philosophical magazine letters. Volume 98:Number 11(2018)
• Page Start: 486
• Page End: 493
• Publication Date: 2018-11-02
• Subjects: Eutectic transformation -- XRD -- VOP -- Al–Cu–Ni alloys; Condensed matter -- Periodicals; Physics -- Periodicals; Solid state physics -- Periodicals; Physique -- Périodiques; 530.41
• DOI: 10.1080/09500839.2019.1581381
• Languages: English
• ISSNs: 0950-0839

Abstract

ABSTRACT: Copper-mould-cast Al–Cu–Ni alloys show adjacent coexistence of in situ grown ordered and eutectic phases. A bimodal microstructure of α–Al and eutectic α-Al+θ-Al2 Cu phases with length-scale hierarchy evolves during solidification. Microstructural analysis through Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM) shows the presence of Vacancy-ordered phases (VOPs) with different morphologies in two different compositions.