Effect of Sc and Zr Additions on Dispersoid Microstructure and Mechanical Properties of Hot-Rolled AA5083

Algendy, Ahmed Y.; Liu, Kun; Rometsch, Paul; Parson, Nick; Chen, X.-Grant

doi:10.1007/978-3-031-22532-1_165

Cited by 1 publication

(3 citation statements)

References 26 publications

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“…It can be shown that Zr additionally increases the hardness [13][14][15]. In addition, it can be demonstrated that further fine dispersoids (size of a few nm) are formed [14][15][16].…”

Section: Introductionmentioning

confidence: 95%

“…Other dispersoid phases can be precipitated by adding further elements. Studies have demonstrated the positive influence of Zr and Sc on the mechanical properties of 3xxx [13], 5xxx [14,15] and 6xxx [16] aluminium alloys. It can be shown that Zr additionally increases the hardness [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…Studies have demonstrated the positive influence of Zr and Sc on the mechanical properties of 3xxx [13], 5xxx [14,15] and 6xxx [16] aluminium alloys. It can be shown that Zr additionally increases the hardness [13][14][15]. In addition, it can be demonstrated that further fine dispersoids (size of a few nm) are formed [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

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The Influence of Homogenisation Parameters on the Microstructure and Hardness of AlMnFeMgSi(Zr) Wrought Alloys

Broer,

Mallow,

Oldenburg

et al. 2023

Metals

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The purpose of this investigation is to improve the mechanical properties of AlMnFeMgSi wrought alloys by forming a high number density of nano-scaled strengthening dispersoids during homogenisation annealing. The process chain for AlMnFeMgSi wrought alloys includes homogenisation annealing after continuous casting. In this step, inhomogeneities and segregations are dissolved and dispersoids are precipitated. The formed dispersoids hinder grain growth, but usually cannot increase the strength due to their coarse size of some 100 nm. Lower homogenisation temperatures should result in the precipitation of smaller dispersoids during homogenisation. The addition of Zr was investigated to increase this effect. Zr should form further dispersoids from the Al3Zr phase. This requires a fundamental understanding of the temperature-dependent kinetics and the nature of precipitation formation during homogenisation. For this purpose, the as-cast state is first characterised via differential scanning calorimetry. Subsequently, a large number of homogenisation parameters are investigated and quantified via hardness testing. The micro- and nanostructure are investigated for promising parameters and a particle analysis is performed. In the present study, it was possible to precipitate fine dispersoids of few 10 nm by reducing the homogenisation temperature, which resulted in a significant increase in hardness. Alloying with Zr enabled the precipitation of further dispersoids with a size of a few nm in a high number density, which further increased the strength.

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“…It can be shown that Zr additionally increases the hardness [13][14][15]. In addition, it can be demonstrated that further fine dispersoids (size of a few nm) are formed [14][15][16].…”

Section: Introductionmentioning

confidence: 95%