Effect on mechanical and thermodynamic properties of Al-10Si-0.8Fe alloys with Al-Ti-C and Ce compound additions. (4th May 2022)

• Record Type: Journal Article
• Authors: Tang, Peng; Lai, Jinsheng; Lin, Yuying
• Is Part Of: International journal of cast metals research. Volume 35:Number 1/3(2022)
• Page Start: 33
• Page End: 42
• Publication Date: 2022-05-04
• Subjects: Al-Si-Fe alloys -- AI-Ti-C -- Cerium -- Compound additions -- Mechanical properties -- Thermodynamic properties; Metal castings -- Periodicals; Founding -- Periodicals; Foundry research -- Periodicals; Foundry chemistry -- Periodicals; 671.2
• DOI: 10.1080/13640461.2022.2078552
• Languages: English
• ISSNs: 1364-0461

Abstract

ABSTRACT: In this work, OM, SEM/EDS, XRD, DSC, and tensile test were used to study the effect on mechanical and thermodynamic properties of Al-10Si-0.8Fe alloys with Al-Ti-C (0.5 wt.%) and xCe (viz. 0.2, 0.4, 0.6 and 0.8 wt.%) compound addition. After adding compound additives to Al-10Si-0.8Fe, the average size of SDAS decreased and the mechanical properties increased. When Ce is 0.6 wt.%, The smallest SDAS size and the best mechanical properties were obtained, then the melting range and enthalpy of melting also reached the minimum. Al-Ti-C can form submicron TiC in the melt, which refines the grains, and adding Ce can form Ce5 Si3 to round the needle-like Fe-rich phase and reduce the adverse effect, the composite additions of them synergistically improve the properties of Al-10Si-0.8Fe alloy. But excessive Ce could aggregate Ti and Fe-rich phases, then coarse impurity particles could form in the melt, leading to modification failure and performance deterioration.