Influence of Cu and Mn content on the properties of Al-Mg4.5-(Mn,Cu) type alloy sheets
Апстракт
Influence of Cu and Mn content on the grain structure, precipitation effects and mechanical properties of two Al-Mg4.5-(Mn,Cu) type sheets was considered. It was found that a variety of grain size can be obtained in alloy with no Mn after different annealing conditions. In Mn-containing alloy the grain growth was suppressed by Mnbearing particles and the grain size was not affected by the annealing temperature. The presence of 0.52 % Mn brought an appropriate strength increase (ΔYS ≤ 30%, ΔUTS ≤ 10%), but the ductility was not influenced by Mn content. The electrical resistivity used to follow precipitation/dissolution processes was mostly affected by precipitation or dissolution of Cu-bearing precipitates, which were found dominantly formed during the interstage recrystallization annealing. During final annealing sizeable change of the electrical resistivity was noticed only after high temperature annealing (as 470°C) when intensive dissolution occurs. The ageing response of the teste...d alloys was effective after ageing treatment at 140°C and 160°C. The high ageing potential of alloy I, with Mn and higher Cu content, was assumed to be due to higher content of Cu/Mg clusters and S' (Al2MgCu) phase particles. Since the age hardening effect was effective even at 140°C, this type of alloys becomes suitable for paint baking procedure at lower temperatures than the currently used of 160°-180°C.
Кључне речи:
Al-Mg4.5-(Mn,Cu) alloy / grain structure / ageing / tensile propertiesИзвор:
Metalurgija, 2009, 15, 2, 91-98Издавач:
- Savez inženjera metalurgije Srbije, Beograd
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Romhanji, Endre AU - Popović, Miljana PY - 2009 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1398 AB - Influence of Cu and Mn content on the grain structure, precipitation effects and mechanical properties of two Al-Mg4.5-(Mn,Cu) type sheets was considered. It was found that a variety of grain size can be obtained in alloy with no Mn after different annealing conditions. In Mn-containing alloy the grain growth was suppressed by Mnbearing particles and the grain size was not affected by the annealing temperature. The presence of 0.52 % Mn brought an appropriate strength increase (ΔYS ≤ 30%, ΔUTS ≤ 10%), but the ductility was not influenced by Mn content. The electrical resistivity used to follow precipitation/dissolution processes was mostly affected by precipitation or dissolution of Cu-bearing precipitates, which were found dominantly formed during the interstage recrystallization annealing. During final annealing sizeable change of the electrical resistivity was noticed only after high temperature annealing (as 470°C) when intensive dissolution occurs. The ageing response of the tested alloys was effective after ageing treatment at 140°C and 160°C. The high ageing potential of alloy I, with Mn and higher Cu content, was assumed to be due to higher content of Cu/Mg clusters and S' (Al2MgCu) phase particles. Since the age hardening effect was effective even at 140°C, this type of alloys becomes suitable for paint baking procedure at lower temperatures than the currently used of 160°-180°C. PB - Savez inženjera metalurgije Srbije, Beograd T2 - Metalurgija T1 - Influence of Cu and Mn content on the properties of Al-Mg4.5-(Mn,Cu) type alloy sheets EP - 98 IS - 2 SP - 91 VL - 15 UR - https://hdl.handle.net/21.15107/rcub_technorep_1398 ER -
@article{ author = "Romhanji, Endre and Popović, Miljana", year = "2009", abstract = "Influence of Cu and Mn content on the grain structure, precipitation effects and mechanical properties of two Al-Mg4.5-(Mn,Cu) type sheets was considered. It was found that a variety of grain size can be obtained in alloy with no Mn after different annealing conditions. In Mn-containing alloy the grain growth was suppressed by Mnbearing particles and the grain size was not affected by the annealing temperature. The presence of 0.52 % Mn brought an appropriate strength increase (ΔYS ≤ 30%, ΔUTS ≤ 10%), but the ductility was not influenced by Mn content. The electrical resistivity used to follow precipitation/dissolution processes was mostly affected by precipitation or dissolution of Cu-bearing precipitates, which were found dominantly formed during the interstage recrystallization annealing. During final annealing sizeable change of the electrical resistivity was noticed only after high temperature annealing (as 470°C) when intensive dissolution occurs. The ageing response of the tested alloys was effective after ageing treatment at 140°C and 160°C. The high ageing potential of alloy I, with Mn and higher Cu content, was assumed to be due to higher content of Cu/Mg clusters and S' (Al2MgCu) phase particles. Since the age hardening effect was effective even at 140°C, this type of alloys becomes suitable for paint baking procedure at lower temperatures than the currently used of 160°-180°C.", publisher = "Savez inženjera metalurgije Srbije, Beograd", journal = "Metalurgija", title = "Influence of Cu and Mn content on the properties of Al-Mg4.5-(Mn,Cu) type alloy sheets", pages = "98-91", number = "2", volume = "15", url = "https://hdl.handle.net/21.15107/rcub_technorep_1398" }
Romhanji, E.,& Popović, M.. (2009). Influence of Cu and Mn content on the properties of Al-Mg4.5-(Mn,Cu) type alloy sheets. in Metalurgija Savez inženjera metalurgije Srbije, Beograd., 15(2), 91-98. https://hdl.handle.net/21.15107/rcub_technorep_1398
Romhanji E, Popović M. Influence of Cu and Mn content on the properties of Al-Mg4.5-(Mn,Cu) type alloy sheets. in Metalurgija. 2009;15(2):91-98. https://hdl.handle.net/21.15107/rcub_technorep_1398 .
Romhanji, Endre, Popović, Miljana, "Influence of Cu and Mn content on the properties of Al-Mg4.5-(Mn,Cu) type alloy sheets" in Metalurgija, 15, no. 2 (2009):91-98, https://hdl.handle.net/21.15107/rcub_technorep_1398 .