Evaluation of microstructure and mechanical properties of M-SIMA processed Al–7Si alloy. Issue 13 (2nd September 2022)

• Record Type: Journal Article
• Authors: Choudhary, Chandan; Pramanick, A. K.; Sahoo, K. L.; Mandal, Durbadal
• Is Part Of: Materials science and technology. Volume 38:Issue 13(2022)
• Page Start: 912
• Page End: 925
• Publication Date: 2022-09-02
• Subjects: Al–Si alloy -- modified SIMA process -- eutectic Si -- mechanical properties; Materials science -- Periodicals; Microstructure -- Periodicals; Metallurgy -- Periodicals; 620.1105
• DOI: 10.1080/02670836.2022.2067614
• Languages: English
• ISSNs: 0267-0836

Abstract

Abstract : In this research article, the effect of the strain-induced melt activation (SIMA) process on the microstructure and mechanical properties of the Al–7Si alloy has been investigated. The morphology of α-Al grains is changed from dendritic to fine spherical and flaky type eutectic Si to a fine fibrous eutectic Si after the modified strain-induced melt activation (M-SIMA) process. The intermetallic compounds are refined and distributed uniformly throughout the matrix after the M-SIMA process. The mechanical properties have been improved due to fine spherical grain formation with refined eutectic Si. A high tensile strength (UTS: 204 MPa) with a remarkable improvement in ductility (El: 30%) is achieved after the M-SIMA process at 585°C for 30 min in comparison to the as-cast Al–7Si alloy (UTS: 117 MPa, El: 16%).