Effect of Changing Homogenisation Treatment for the Alloys AA3102 and AA3103

Pettersen, Tanja; Furu, Trond; Hákonsen, Arild

doi:10.4028/www.scientific.net/msf.396-402.1067

Cited by 4 publications

(3 citation statements)

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“…During homogenisation the primary particles will transform to stable phases and grow, Mn will migrate from solid solution to particles, dispersoids will nucleate and grow or dissolve depending on their size, exposed temperature-time cycle and alloy chemistry [e.g. 7,8]. The present investigation aims at studying the changes in Mn in solid solution and particle structure during homogenisation, and the effect of Si on these parameters.…”

Section: Resultsmentioning

confidence: 99%

Effect of Changing Homogenization Treatment on the Particle Structure in Mn-Containing Aluminium Alloys

Pettersen

Furu

et al. 2007

MSF

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During casting and homogenisation of aluminium the microstructural fundament for further processing is made. Particle structure (dispersoids and primary particles), grain structure and level of elements in solid solution govern the mechanical and annealing properties of the material. In 3xxx-alloys, Mn in solid solution and Mn-containing dispersoids formed during homogenisation play an important role in controlling the recrystallization behaviour of the material [e.g. 1, 2, 3]. Other elements, such as Si, will have an influence on the formation of dispersoids [4, 5]. Hence, to control the annealing behaviour of the material, it becomes important to control the particle structure. In the present investigation, an AA3103 alloy, and modified versions of this alloy, have been investigated. Various homogenisation treatments have been performed and the resulting material has been studied. Electrical conductivity has been measured and microstructural investigations have been carried out.

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Section: Resultsmentioning

confidence: 99%

Effect of Changing Homogenization Treatment on the Particle Structure in Mn-Containing Aluminium Alloys

Pettersen

Furu

et al. 2007

MSF

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“…The transformation of Al6(MnFe) to -Al(MnFe)Si phase involves the nucleation of the  phase at the interface between Al6(Mn,Fe) particles and the Al matrix 1. Pettersen et al 17 suggest that some Al6(MnFe) precipitates that are formed during solidification will transform into Al15(MnFe)3Si2 during homogenization.…”

Section: Microstructural Analysismentioning

confidence: 99%

Precipitate Extraction From 3003 Aluminum Alloy Produced by Twin Roll Casting/ Extração Precipitada De 3003 Ligas De Alumínio Produzidas Por Fundição Em Rolo Duplo

Martins

Carvalho

Oliveira

et al. 2021

BJD

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In the present study four different precipitate extraction techniques were investigated on a 3003 aluminium alloy samples (twin-roll cast and homogenized conditions). The dissolution product was analyzed with the help of X-ray diffraction, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analysis. The performance of four chemical solutions (iodine solution, perchloric acid, oxine solution, and phenol solution) was compared, and the phenol solution presented the best precipitate extraction results. The phases in the cast and homogenized microstructures were identified, explaining some aspects of the phase transformation during the homogenization.

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“…The precipitation of smaller dispersoids under modified homogenisation conditions has already been reported in the literature. It is shown that at lower homogenisation temperatures, a higher particle density and hardness can be achieved [7,8]. The dispersoids have a smaller size [4,7] and can increase the strength.…”

Section: Introductionmentioning

confidence: 99%

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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Effect of Changing Homogenisation Treatment for the Alloys AA3102 and AA3103

Cited by 4 publications

References 0 publications

Effect of Changing Homogenization Treatment on the Particle Structure in Mn-Containing Aluminium Alloys

Effect of Changing Homogenization Treatment on the Particle Structure in Mn-Containing Aluminium Alloys

Precipitate Extraction From 3003 Aluminum Alloy Produced by Twin Roll Casting/ Extração Precipitada De 3003 Ligas De Alumínio Produzidas Por Fundição Em Rolo Duplo

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

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