Near-Surface Microstructure on Twin-Roll Cast 8906 Aluminum Alloy

Wang, Junjie; Zhou, Xiaorong; Thompson, G.E.; Hunter, John; Yuan, Yudie

doi:10.1007/s11661-015-2877-5

Cited by 15 publications

(8 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The grain refinement in the near-surface layer was caused by the high level of shear deformation in the near-surface region of the alloy during the twin-roll cast process. [21] Two types of dark spots are shown in the backscattered electron micrograph. The first type is voids, as indicated by white arrows.…”

Section: Resultsmentioning

confidence: 99%

“…Similar phenomenon has been reported on a variety of aluminum alloys. [2,4,11,19,21,24] Figure 3(b) shows a high population density of oxide particles with sizes ranging from 20 to 150 nm within the near-surface layer of the TRC AlFeMnSi alloy strip, as indicated by the arrows. The composition of the particles was confirmed by EDX analysis, as shown in Figure 6.…”

Section: Resultsmentioning

confidence: 99%

“…These oxide/lubricant residue particles were incorporated into the near-surface region of the alloy strip due to the interaction between the surfaces of the rolls and the solidified workpiece during twin-roll casting. [21] The more severe local tool/workpiece interaction results in higher level of incorporation. Consequently, the distribution of the oxide/lubricant particles within the near-surface layer is not uniform, e.g., the top left area of the micrograph in Figure 3(a) shows less oxide/lubricant particles.…”

Section: Resultsmentioning

confidence: 99%

“…Further, the authors' previous work revealed that the distribution of the oxide/lubricant particles within the near-surface layer of foil stock twin-roll cast (TRC) 8906 AlFeSi alloy was not uniform due to the varying extents of local tool/workpiece interaction. [21] The influence of the local population densities of the oxide/lubricant particles on the thermal stability of the near-surface layer has not been reported. Although elemental redistribution and intermetallic phase transformation in the bulk of continuously cast AlFeMnSi alloys during high temperature annealing has been reported previously, [22,23] the response of intermetallic precipitates in the near-surface layers of TRC aluminum alloys to the homogenization treatment has yet to be investigated.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Microstructure Evolution in the Near-Surface Region During Homogenization of a Twin-Roll Cast AlFeMnSi Alloy

Wang

Zhou

Thompson

et al. 2016

Metall Mater Trans A

Self Cite

View full text Add to dashboard Cite

A near-surface deformed layer, comprising ultrafine grains of 50-500 nm diameters with the grain boundaries being decorated by a high population density of fine cubic a-Al 15 (FeMn) 3 Si 2 dispersoids and oxide/lubricant particles, was generated in a foil stock AlFeMnSi alloy during twin-roll casting due to severe shear deformation within the near-surface region. During a subsequent multi-step homogenization treatment at temperatures in the range of 713 K and 853 K (440°C and 580°C), the fine cubic a-Al 15 (FeMn) 3 Si 2 dispersoids within the near-surface layer were dissolved, while sparse, large lath-shaped Al 3 Fe particles formed in the same region. Significant grain growth took place within the near-surface layer due to the loss of grain boundary pinning by the dispersoids, leading to the removal of the ultrafine-grained microstructure within the near-surface region. However, at local regions where the population density of oxide particles was sufficiently high to provide grain boundary pinning, the ultrafine-grained microstructure was preserved within the near-surface layer.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Microstructure Evolution in the Near-Surface Region During Homogenization of a Twin-Roll Cast AlFeMnSi Alloy

Wang

Zhou

Thompson

et al. 2016

Metall Mater Trans A

Self Cite

View full text Add to dashboard Cite

show abstract

“…Günümüzün önemli bir problem, küresel ısınmayı önlemek için otomotiv sektöründe kritik bir parametre olan yakıt tüketimini azaltmak gerekmektedir [1]. Bu yüzden, araç ağırlıklarının azaltılması yakıt tüketimini düşürecek bir önlem olarak görülmektedir [2]. Bu manada bir aracın önemli bir parçası olan ısı eşanjörü (radyatör) ağırlığının azaltılması da bu konudaki araştırmalara gözle görülür bir katkı sağlamaktadır [3,4].…”

Section: Gi̇ri̇ş (Introduction)unclassified

Otomobil ısı eşanjörlerinde kullanılan doğrudan soğutmalı döküm (DC) ve ikiz merdaneli sürekli döküm (TRC) ile üretilen modifiye edilmiş folyo 3003 alüminyum alaşımlarının elektrokimyasal yöntemler ile korozyon davranışının karakterizasyonu

Küçük

2020

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

View full text Add to dashboard Cite

 Effects of Zn on corrosion resistance is investigated experimentally for 3003 TRC and DC aluminium alloys  Control of change of surface roughness of 3003 TRC and DC aluminium alloys  Determination of surface pit sizes of 3003 TRC and DC aluminium alloys Figure A. a) Schematic view of details of the Gamry's Paintcell three electrode system experimental setup used and b and c) Bode plots obtained from 3003 DC, 3003 DC-Zn and 3003 TRC-Zn samples after EIS measurements collected in 1 molar aqueous solution including NaCI and H2O2. Purpose: In this work, corrosion behaviour of the three different 70 µm thickness finstock foils: commercially available Al-Si-Mn contained 3003 aluminium (3003 DC), and Zinc added 3003 aluminium (3003 DC-Zn) alloys made by direct chill (DC) caster process and twin roll cast Zn added 3003 aluminium (3003 TRC-Zn) alloys was evaluated. Theory and Methods: Advanced electrochemical corrosion test techniques such as open circuit potential (OCP), potantiodynamic curves and electrochemical impedance spectroscopy (EIS) in 1 Molar NaCI + H2O2 solution environment were performed. Also, surface characterization of the samples used in this study was performed by 3D profilometer, scanning electron microscopy (SEM) added EDS tool, and chemical composition analysis methods such as optical spectroscopy and X-ray diffraction before and after electrochemical corrosion tests. Results: The results of the study showed that the surface roughness and corrosion rate and impedance values of the 3003 aluminium alloy modified with Zn (3003 TRC-Zn) produced by TRC method had higher values than that of the 3003 DC and 3003 DC-Zn samples. Conclusion: It was concluded that the 3003 TRC-Zn would be of use as a sacrifice metal in car heat exchanger systems, due to its desired poor corrosion resistance.

show abstract

Tailoring the Materials Properties with a Holistic Approach from Casting to Back Annealing

Işıksaçan¹,

Meydanoğlu²,

Birbaşar³

et al. 2018

The Minerals, Metals &Amp; Materials Series

View full text Add to dashboard Cite

Near-Surface Microstructure on Twin-Roll Cast 8906 Aluminum Alloy

Cited by 15 publications

References 34 publications

Microstructure Evolution in the Near-Surface Region During Homogenization of a Twin-Roll Cast AlFeMnSi Alloy

Microstructure Evolution in the Near-Surface Region During Homogenization of a Twin-Roll Cast AlFeMnSi Alloy

Otomobil ısı eşanjörlerinde kullanılan doğrudan soğutmalı döküm (DC) ve ikiz merdaneli sürekli döküm (TRC) ile üretilen modifiye edilmiş folyo 3003 alüminyum alaşımlarının elektrokimyasal yöntemler ile korozyon davranışının karakterizasyonu

Tailoring the Materials Properties with a Holistic Approach from Casting to Back Annealing

Contact Info

Product

Resources

About