Developing Superplasticity in A AZ91 Magnesium Alloy Through a Combination of Rolling, ARB and ECAP
作者： Miroslav Greger , David Žáček
DOI: 10.21062/UJEP/X.2013/A/1213-2489/MT/13/4/450
关键词:
摘要: The paper summarises results of experiments aimed at development structure modified Mg-Al-Zn alloys hot deformation. Methods ARB and ECAP were used in the described experiment. It was proved that hardly forming materials could achieve very high plastics properties. After making deformation, using alloy AZ91 analysed superplastics behaviour, it certified by obtaining results, when ductility to rupture 418 %, is demostrated conclusion article. experiment big influence previous deformation ending values mechanical verified better are rolling more steps compared one pass. low submission temperature last pass through die ,it causes higher final obtained material about grain size d ≈ 0.7 μm during technology ECAP. Abreast enabled get interval 1-10 μm. sekond brings strength Only 3 cycles sufficient lower original under limit 10
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