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Microstructure and formability development in Al strip casting for thin gauge foil production = Razvoj mikrostrukture in preoblikovalnoasti kontilitih Al-trakov za proizvodnjo tankih folijKevorkijan, Varužan ...The changeover to cast Al strip for foil production has been defined by the management of Impol as the key part of its strategy for the plant's development and the restructuring of roll-casting ... technology. In comparison with hot-rolled strip, continuous cast strip is a cost-effective raw material for foil production, but different in terms of microstructure, phase composition, formability and other technological characteristics. Due to the very rapid solidification of molten metal in continuous thin strip, the microstructure consists of a strongly supersaturated aluminium solid solution and an increased fraction of fine particles of intermetallic phases, precipitated in Al crystal grains. This has a negative effect on ca st-strip formability, and more over, the cast strip's surface is oxidized and contaminated with graphite. For the purpose of producing strip from technical aluminium (group AAlxxx) and alloys of the Al-Fe type (group AA8xxx) it was necessary to change the casting parameters as well as the parameters for further strip processing, which differ from conventional roll-casting procedures. Continuous cast strip is primarily intended for insulation, converter and household foils of different widths. The principal foil characteristics, prescribed by EN standards, are the mechanical characteristics, surface quality, porosity and the thermostability. The research work was focused on achieving the listed characteristics by changing the alloy composition and the conditions of transformation of continuous cast strip into foil. A sui table thermomechanical treatment changes the distribution of alloy elements in the existing microstructural phases and there by also their effect on static recrystallisation, thereby affecting the surface quality and the mechanical characteristics of the foil. In this study the optimum composition and the process parameters of continuous casting that make it possible to use the strip as raw material for producing sheets and insulation, converter and household foils of standard quality are presented.Source: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 39, št. 4, 2005, str. 125-128)Type of material - article, component partPublish date - 2005Language - englishCOBISS.SI-ID - 9789206
Author
Kevorkijan, Varužan |
Smolej, Anton, 1941- |
Doberšek, Mirko |
Lažeta, Marjana |
Slaček, Edvard, 1951- |
Kosec, Ladislav |
Šarler, Božidar |
Torkar, Matjaž |
Skrbinek, Robert |
Robič, Aleksandra |
Kolmanič, Andrej, strojni inženir, 1975 |
Pšeničnik, Milica |
Kočevar, Leonida |
Kegl, Alojz |
Pleterski, Jožef
Topics
kontinuirno litje |
proizvodnja aluminijevih folij |
Impol |
Slovenska Bistrica |
continuous casting |
production of Aluminium thin foils |
Impol |
Slovenska Bistrica
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Kevorkijan, Varužan | 04968 |
Smolej, Anton, 1941- | 00735 |
Doberšek, Mirko | 09434 |
Lažeta, Marjana | 15911 |
Slaček, Edvard, 1951- | 22944 |
Kosec, Ladislav | 00050 |
Šarler, Božidar | 04101 |
Torkar, Matjaž | 05438 |
Skrbinek, Robert | ![]() |
Robič, Aleksandra | ![]() |
Kolmanič, Andrej, strojni inženir, 1975 | ![]() |
Pšeničnik, Milica | ![]() |
Kočevar, Leonida | ![]() |
Kegl, Alojz | 15908 |
Pleterski, Jožef | ![]() |
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