Effects of Cr addition on the microstructure and mechanical behavior of 6061-T6 continuously cast and rolled redraw rod

Jeniski, Richard A.

doi:10.1016/s0921-5093(97)00116-0

Cited by 23 publications

(13 citation statements)

References 3 publications

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“…Dynamic recrystallization occurred in both aluminum alloys in the hot extrusion step, but the grain sizes of the two alloys are not identical due to Mn retarding Even though the extrusion ratios of 6061 and 6061-Mn are identical, the initial grain size of 6061 is larger than that of 6061-Mn. Dynamic recrystallization occurred in both aluminum alloys in the hot extrusion step, but the grain sizes of the two alloys are not identical due to Mn retarding grain growth after dynamic recrystallization, since it increases the temperature of recrystallization [10,13,14].…”

Section: Effects Of Extrusion Conditions and Chemical Composition On mentioning

confidence: 99%

“…Besides Mg and Si, Cu, Mn, Cr, Zr, Sc, and V are added to these alloys. Adding Mn inhibits grain growth, enhances strength, and increases recrystallization temperature [10,13,14]. Adding Cu improves strength and hardness due to the refining of the precipitated phase during artificial aging [15,16].…”

Section: Introductionmentioning

confidence: 99%

“…Adding Cu improves strength and hardness due to the refining of the precipitated phase during artificial aging [15,16]. Adding Cr promotes corrosion resistance [13]. Adding Zr enhances strength, since Al 3 Zr is generated and grain growth is inhibited, and adding Sc or V retards grain growth [17,18].…”

Section: Introductionmentioning

confidence: 99%

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Microstructure Evolution and Microstructural Characteristics of Al–Mg–Si Aluminum Alloys Fabricated by a Modified Strain-Induced Melting Activation Process

Lin

Hung

Lui

2017

Metals

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Abstract:A modified strain-induced melting activation (SIMA) process is shown to improve high-temperature formability. The microstructural characteristics of the spheroidized grains of SIMA-processed alloys affect high-temperature formability. The effects of hot extrusion parameters and chemical composition on the evolution of spheroidized grains were investigated using several 6xxx series aluminum alloys subjected to a modified SIMA process. The results show that 6066 aluminum alloy is the most suitable alloy for the SIMA process, as it contains sufficient Mg, Si, Cu, and Mn. Adequate amounts of Mg, Si, and Cu lead to a high liquid fraction, and a sufficient addition of Mn inhibits grain growth. Proper hot extrusion parameters are essential, because initial fine and uniform recrystallized grains lead to fine and uniform globules. The phases at the global grain boundaries of 6066 aluminum alloy are eutectic phases of Al and Si, Al and Mg 2 Si, and Al and Al 2 Cu, as analyzed using transmission electron microscopy.

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Section: Effects Of Extrusion Conditions and Chemical Composition On mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microstructure Evolution and Microstructural Characteristics of Al–Mg–Si Aluminum Alloys Fabricated by a Modified Strain-Induced Melting Activation Process

Lin

Hung

Lui

2017

Metals

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“…According to the literature, it is most likely the high-melting-point Al 15 (Fe,Mn,Cr) 3 Si 2 phase. 27,28) The hardness data evaluated using the HR test are shown in Fig. 8(a).…”

Section: Microstructure Characteristicsmentioning

confidence: 99%

Structural Characteristics and Particle Erosion Resistance of SIMA-Processed Al-Mg-Si Alloy

et al. 2016

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The aim of this research is to investigate the effects of the strain-induced melt activation (SIMA) process on the microstructure and particle erosion properties of 6066 Al-Mg-Si alloy. The erosion data of the SIMA-processed alloy were compared to those of the original extruded alloy (F) and a high-hardness artificially aged alloy (T6). The microstructure results show that spheroidized grains formed via the SIMA process. Globular and soft ¡-Al grains were surrounded by hard multi-element grain boundaries, creating a network structure. The erosion resistance of T6 was better than that of F at all impact angles due to the increase in hardness via artificial aging. The erosion resistance of the SIMA-processed alloy was higher than that of T6 at low impact angles. The SIMA process thus improves the low-angle erosion resistance of Al alloys. The hard and brittle grain boundaries of the SIMA-processed alloy protect soft grains from being destroyed by erosion particles at oblique impact. The low-angle erosion resistance decreases with spheroidized grain growth due to a decrease in the surface area of grain boundaries.

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“…Le fer (Fe) n'a qu'une influence limitée à ces faibles concentrations en ne jouant que sur la quantité et l'épaisseur de phases formées et non pas sur la cinétique de transformation [4]. Un autre élément, le Cr, a aussi une influence notable sur sa conversion en <x-Ali2(Fe, Cr) 3 Si [11] mais son impact, lors de l'homogénéisation, est moins bien documenté. Cet élément accroît aussi la stabilité de la phase a à la solidification et augmente la quantité présente par rapport à des alliages sans Cr.…”

Section: Cinétique De La Transformation (3 -> Aunclassified

Effet du temps et de la température sur l'homogénéisation d'un alliage d'aluminium AA6061 destiné au forgeage à chaud /

Racine¹

2009

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Effects of Cr addition on the microstructure and mechanical behavior of 6061-T6 continuously cast and rolled redraw rod

Cited by 23 publications

References 3 publications

Microstructure Evolution and Microstructural Characteristics of Al–Mg–Si Aluminum Alloys Fabricated by a Modified Strain-Induced Melting Activation Process

Microstructure Evolution and Microstructural Characteristics of Al–Mg–Si Aluminum Alloys Fabricated by a Modified Strain-Induced Melting Activation Process

Structural Characteristics and Particle Erosion Resistance of SIMA-Processed Al-Mg-Si Alloy

Effet du temps et de la température sur l'homogénéisation d'un alliage d'aluminium AA6061 destiné au forgeage à chaud /

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