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Cassinath, Z, Li, Z, Sridhar, S, Das, A and Kotadia, HR (2019) Microstructural modification of Sn–Bi and Sn–Bi–Al immiscible alloys by shearing. Materials Science and Technology, 35 (18). pp. 2157-2164. ISSN 0267-0836
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Microstructural Modification of SnBi and SnBiAl Immiscible Alloys by Shearing.pdf - Accepted Version Available under License Creative Commons Attribution Non-commercial No Derivatives. Download (1MB) | Preview |
Abstract
Sn–20 wt-%Bi and immiscible Sn–20 wt-%Bi–1 wt-%Al alloys were used to understand the effect of high-intensity shearing on microstructural refinement. Novel ACME (Axial Centrifugal Metal Expeller) shearing device, based on axial compressor and rotor–stator mechanism to generate high shear rate and intense turbulence, was used to condition the melts prior to solidification. Microstructure in the Sn–Bi alloy deviated from dendritic grains with coarse eutectic pockets under conventional solidification to compact grains with well-dispersed eutectic under semisolid-state shearing. Decreasing the shearing temperature and increasing shearing time increased the globularity of grains. Following shearing, remnant liquid solidified into fine grain structure. In the immiscible Sn–Bi–Al alloy, shearing produced uniform dispersion of refined Al-rich particles in Sn-rich matrix as opposed to severe segregation under conventional solidification. The primary effect of shearing appears to originate from the thermo-solutal homogenisation of the melt and its effect on interface stability during solidification.
| Item Type: | Article |
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| Additional Information: | Cassinath Z, Li Z, Sridhar S, Das A, Kotadia HR. Microstructural modification of Sn–Bi and Sn–Bi–Al immiscible alloys by shearing. Materials Science and Technology. 2019;35(18):2157-2164. doi:10.1080/02670836.2019.1661659 Reuse is restricted to non-commercial and no derivative uses |
| Uncontrolled Keywords: | 0912 Materials Engineering; 0913 Mechanical Engineering; Materials |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Engineering |
| Publisher: | SAGE Publications |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 27 Jan 2025 12:36 |
| Last Modified: | 27 Jan 2025 12:45 |
| DOI or ID number: | 10.1080/02670836.2019.1661659 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/25440 |
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