Work

High-temperature mechanical behaviour of Al-10Ce alloy with Sc, Zr, Si, and Mg alloying elements

Year: 2024

Type: article

Abstract: The influence of Sc, Zr, Mg, and Si addition to Al-10Ce hypereutectic alloy on the formation of intermetallics and mechanical properties have been investigated in as-cast condition and after heat treatment. The incorporation of Sc and Zr facilitated the formation of primary Al 3 (Sc, Zr) intermetallics, which effectively refined the α-Al grains due to heterogeneous nucleation. Si addition resulted in the formation of the Al 2 CeSi 2 phase. Aging at 300 °C led to the formation of nanoscale Al 3 (Sc, Zr) precipitates with an average diameter of 3 nm. The hardness of the alloy significantly increased and remained unaffected even after ageing for 100 h which suggests the thermal stability of the Al-Ce alloy containing these precipitates. As a result of thermal stability, Al-10Ce-(Sc, Zr) is observed to exhibit higher yield strength at 300 °C than a range of Al-Cu, Al-Si alloy systems.

Source: Materials & Design

DOI: 10.1016/j.matdes.2024.113524

Authors: Shishir Keerti, Pavel Shurkin, Qing Cai, Hari Babu Nadendla, Animesh Mandal

Institutions: Brunel University of London, Indian Institute of Technology Bhubaneswar

Language: English

Topic: Aluminum Alloy Microstructure Properties

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,200

Funders: Ministry of Education, India, Scheme for Promotion of Academic and Research Collaboration, Engineering and Physical Sciences Research Council