Behavior of a submicrocrystalline aluminum alloy 1570 under conditions of cyclic loading

yesA study of the resistance to fatigue-crack growth in a submicrocrystalline alloy Al–6% Mg–0.3% Sc–0.4% Mn in combination with a precision analysis of the fracture surface of the samples has been performe

Behavior of a submicrocrystalline aluminum alloy 1570 under conditions of cyclic loading

A study of the resistance to fatigue-crack growth in a submicrocrystalline alloy Al–6% Mg–0.3% Sc–0.4% Mn in combination with a precision analysis of the fracture surface of the samples has been performedye

The processing route towards outstanding performance of the severely deformed Al–Mg–Mn-Sc-Zr alloy

Aiming at obtaining the enhanced mechanical properties profile for lightweight applications, bulk billets of the commercial 1570C aluminium alloy (Al–5Mg-0.18Mn-0.20Sc-0.08Zr, wt. %) with nanosized aluminides of transition metals (TM) were subjected to various thermomechanical treatments comprising severe plastic deformation for grain refinement and favourable distribution of disperse phases. The potential of multiaxial isothermal forging (MIF) for the fabrication of ultrafine-grain advanced aluminium alloys is unveiled via a multistep pathway involving two primary routes – the one under constant processing temperature and the other with the inter-step temperature reduction from 325 to 175 °C - combined with conventional cold rolling or high-pressure torsion. Processing-dependent microstructural factors controlling the alloy's behaviour under monotonic and cyclic loading at ambient temperature are discussed with the account of the role of the grain size, grain boundary distribution, precipitates of Mg-rich β-phase and TM-aluminides. In particular, it is shown that after MIF followed by cold rolling, the outstanding combination of the tensile strength and ductility was observed concomitantly with the fatigue resistance superior to that in the contemporary alloys of the same class and/or of many currently available commercial high-strength alloys

Effect of precipitates on static and fatigue strength of a severely forged aluminum alloy 1570C

Bulk billets from commercial ingots of the alloy 1570C with different size of aluminides of transition metals were subjected to severe deformation up to the equivalent strain e~24 via multi-step isothermal forging (MIF) with an inter-step temperature decrease from 325 to 175 °C. The high potential of MIF to produce UFG billets with enhanced balance of static and fatigue properties has been demonstrated. The role of precipitates of aluminides of transition metals and regimes of the MIF in the structure of the alloy and for the control of properties is discussed.publishedVersionContent from this work may be used under the terms of theCreative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Lt