Effect of rapid solidification on structure and mechanical properties of Al-6Mn-3Mg alloy

• Autorzy: Lobry P. , Błaż L. , Sugamata M. , Kula A.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Experiments on rapidly solidified (RS) and industrially manufactured (IM) Al-6Mn-3Mg alloy were performed to test the effect of RS on the structure and mechanical properties of the material. Design/methodology/approach: Annealing of as-extruded RS and IM samples was performed at 500°C in order to test the stability of structural components and related hardness of the materials. Mechanical properties of as-extruded RS and IM materials as well as the samples preliminarily annealed at 500°C / 6 h were tested by compression at 20°C-500°C. Structural investigations were performed using analytical transmission electron microscopy techniques. Findings: The flow stress for RS-samples was found to be about 240 MPa higher at 293 K than that for IM material. However, the difference between the flow stress values observed for RS and IM samples was remarkably reduced at higher deformation temperatures. Annealing at 500°C was found to result in reduction of the RS-material hardness due to the recovery process and slightly marked coarsening of Al6Mn particles. The particles observed in both as extruded and RS-samples annealed 500°C / 7 days were at least 10-times smaller than that for the industrial material. Practical implications: Due to refined structure and the negligible particle coarsening at high annealing temperatures, the products made from RS Al-6Mn-3Mg alloy can be used at high service temperature applications. Originality/value: Hardening of non-heat-treatable Al-6Mn-3Mg alloy is possible due to effective refining of Al6Mn particles using the rapid solidification and adequate consolidation procedure of RS-powders. The highest flow stress was observed for RS samples tested at room temperature. However, increasing deformation temperature was found to result in reduced difference between the flow stress values received for RS and IM materials.

Słowa kluczowe

EN

plasticity; rapid solidification; hot deformation

PL

plastyczność; szybkie krzepnięcie; odkształcenie na gorąco

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2011
• Tom: Vol. 49, nr 2
• Strony: 97--102
• Opis fizyczny: Bibliogr. 14 poz.

Twórcy

autor

Lobry P.

autor

Błaż L.

autor

Sugamata M.

autor

Kula A.

• AGH-University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland,

Bibliografia

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