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Duplex Nucleation and Its Effect on the Grain Size and Properties of Near Eutectic Al-Si Alloys

Materials, 2022-03, Vol.15 (7), p.2507 [Peer Reviewed Journal]

2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;2022 by the authors. 2022 ;ISSN: 1996-1944 ;EISSN: 1996-1944 ;DOI: 10.3390/ma15072507 ;PMID: 35407840

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  • Title:
    Duplex Nucleation and Its Effect on the Grain Size and Properties of Near Eutectic Al-Si Alloys
  • Author: Li, Wenbo ; Wu, Yuying ; Wu, Yongjie ; Li, Yang ; Ehti, Amanisha ; Liu, Xiangfa
  • Subjects: Al-Si alloy ; Alloys ; Aluminum ; Aluminum base alloys ; duplex nucleation ; Experiments ; Grain size ; Ion beams ; Master alloys ; Metal fatigue ; Nucleation ; Nuclei ; primary Si ; Scanning electron microscopy ; Silicon ; Spectrum analysis ; Tensile strength ; Titanium diboride
  • Is Part Of: Materials, 2022-03, Vol.15 (7), p.2507
  • Description: Duplex nucleation and its effect on the grain size and properties of near eutectic Al-Si alloys were investigated in this work. It is found that the grain size of Al-13Si-1Cu alloy can be greatly refined by addition of Al-2Ti-0.5B-0.5C and Al-P master alloys, and TiB /AlP duplex nucleation was observed at the nuclei of primary silicon in the process of studying the refinement mechanism. TiB phase coated by Al co-existed with AlP in the nuclei of primary Si. The existence of Al phase should not only guarantee the promotion of TiB particles on the nucleation of AlP particles, but also made TiB particle stable in the core of primary silicon through the interaction with the Si phase. Duplex nucleation can not only affect the grain size of Al-Si alloy, but also effect of the distribution of strengthening phases in Al-Si alloy and improve the properties. Compared with single Al-P master alloy treatment, the tensile strength of Al-12Si-4Cu-2Ni-1Mg alloy after duplex nucleation treatment are improved obviously. The fatigue performance of Al-12Si-4Cu-2Ni-1Mg alloy is also improved significantly by the duplex nucleation.
  • Publisher: Switzerland: MDPI AG
  • Language: English
  • Identifier: ISSN: 1996-1944
    EISSN: 1996-1944
    DOI: 10.3390/ma15072507
    PMID: 35407840
  • Source: Open Access: DOAJ Directory of Open Access Journals
    Open Access: PubMed Central
    Geneva Foundation Free Medical Journals at publisher websites
    AUTh Library subscriptions: ProQuest Central
    ROAD: Directory of Open Access Scholarly Resources
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