Mechanical and microstructural properties of Mg-based AZ31 alloy processed by ARB

• Autorzy: Palán J. , Kubina T. , Köver M. , Slama P.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Severe plastic deformation techniques are known to produce materials with ultrafine-grained structures and enhanced mechanical properties. In magnesium alloys, these techniques improve both strength and ductility, as the latter is normally low at room temperature. In the present experiment, properties of rolled products after two rolling passes were examined. Rolling was carried out at 350°C and 400°C. At 350°C, the rolled sheets did not bond. Mechanical properties of the rolled products were determined. Microhardness profiles were measured to map the deformation distribution. The impact of the number of passes on mechanical properties was evaluated. It was found that with increasing number of passes, ultimate strength yield strength improve, and elongation does not decrease. Metallographic examination of the rolled products was carried out to assess the quality of the resulting joint. In certain locations, the joint was not distinctly visible, which proves its high quality. Design/methodology/approach: The evaluation was performed by simple tensile testing and light microscopy. The first conclusions were derived from the determined mechanical properties and based on analogies in available publications on a similar topic. Findings: This study confirmed that the SPD process improves mechanical properties and does not impair the ductility of the material. With increasing number of passes, the mechanical properties of the sample become more uniform.

Słowa kluczowe

EN

magnesium alloys; accumulative roll-bonding (ARB); ARB; SPD; grain refining

PL

magnez; akumulacyjne walcowanie pakietowe; ARB; SPD; rozdrobnienie ziarna

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2015
• Tom: Vol. 76, nr 2
• Strony: 129--133
• Opis fizyczny: Bibliogr. 8 poz.

Twórcy

autor

Palán J.

• COMTES FHT a.s., Průmyslová 995, Dobřany 334 41, Czech Republic

autor

Kubina T.

• COMTES FHT a.s., Průmyslová 995, Dobřany 334 41, Czech Republic

autor

Köver M.

• COMTES FHT a.s., Průmyslová 995, Dobřany 334 41, Czech Republic

autor

Slama P.

• COMTES FHT a.s., Průmyslová 995, Dobřany 334 41, Czech Republic

Bibliografia

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• [7] J. Gubiš, Properties of ultrafine steel prepared by severe plastic deformation, Institute of Chemical Technology in Prague (in Czech).
• [8] K Kubota, M. Mabuchi, K. Higashi, Processing and mechanical properties of fine-grained magnesium alloys, Materials Science Forum 34 (1999) 2255-2262.