Synchrotron X-ray real-time studies of the nucleation and growth of intermetallic phases in solidification

Mi, Jiawei

Abstract

In this paper, real-time, direct observation of the nucleation of primary Al 2 Cu phases on entrained oxide films during the solidification of an Al-35%Cu alloy, and the change of growth mode from planner to dendritic type structure of Al 3 Ni phases in an Al-15%Ni alloy under a pulse magnetic field are presented and discussed. Real-time synchrotron X-ray radiography provides clear and unambiguous evidence to confirm that the entrained oxide films can indeed directly nucleate primary Al 2 Cu intermetallic phases. Combining radiography and tomography together, the critical conditions of changing growth mode from a planner to dendritic type for the Al 3 Ni phases were also clearly revealed. The research demonstrates that synchrotron X-ray-based real-time characterisation techniques are the indispensable tools for quantitative solidification research.

Citation

Mi, J. (2019). Synchrotron X-ray real-time studies of the nucleation and growth of intermetallic phases in solidification. In M. Tiryakioğlu, W. Griffiths, & M. Jolly (Eds.), Shape Casting : 7th International Symposium Celebrating Prof. John Campbell's 80th Birthday (65-71). Springer. https://doi.org/10.1007/978-3-030-06034-3_6

• Online Publication Date: Feb 9, 2019
• Publication Date: 2019
• Deposit Date: Apr 11, 2022
• Print ISSN: 2367-1181
• Electronic ISSN: 2367-1696
• Publisher: Springer
• Pages: 65-71
• Series Title: The Minerals, Metals & Materials Series
• Series ISSN: 2367-1181 ; 2367-1696
• Book Title: Shape Casting : 7th International Symposium Celebrating Prof. John Campbell's 80th Birthday
• ISBN: 9783030060336
• DOI: https://doi.org/10.1007/978-3-030-06034-3_6
• Public URL: https://hull-repository.worktribe.com/output/1989678