The effect of Mg and Si content on the microstructure, texture and bendability of Al–Mg–Si alloys

Li, Zhenguo; Zhang, Zhijun; Zhou, Guangwen; Zhao, Ping; Jia, Zhihong; Poole, Warren J.

doi:10.1016/j.msea.2021.141199

Cited by 32 publications

(8 citation statements)

References 44 publications

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“…This is in contradiction to what has been traditionally observed in the literature, i.e., the bending formability usually increases with increasing fracture strain [ 22 , 29 , 30 ]. Datsko and Yang [ 22 ] proposed an empirical relationship between bendability and the reduction area, which is equivalent to the fracture strain, measured from a tensile test.…”

Section: Discussioncontrasting

confidence: 91%

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On the Competition between Intergranular and Transgranular Failure within 7xxx Al Alloys with Tailored Microstructures

et al. 2023

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7xxx aluminium series reach exceptional strength compared to other industrial aluminium alloys. However, 7xxx aluminium series usually exhibit Precipitate-Free Zones (PFZs) along grain boundaries, which favour intergranular fracture and low ductility. In this study, the competition between intergranular and transgranular fracture is experimentally investigated in the 7075 Al alloy. This is of critical importance since it directly affects the formability and crashworthiness of thin Al sheets. Using Friction Stir Processing (FSP), microstructures with similar hardening precipitates and PFZs, but with very different grain structures and intermetallic (IM) particle size distribution, were generated and studied. Experimental results showed that the effect of microstructure on the failure mode was significantly different for tensile ductility compared to bending formability. While the tensile ductility was significantly improved for the microstructure with equiaxed grains and smaller IM particles (compared to elongated grains and larger particles), the opposite trend was observed in terms of formability.

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Section: Discussioncontrasting

confidence: 91%

“…Not that since bending occurs in plane strain, the plane strain fracture strain should be used but a similar relationship can be made with the tensile fracture strain [30]. Several exper imental studies have shown a good agreement with this empirical relationship, such as in 6xxx Al alloys [29].…”

Section: Discussionmentioning

confidence: 99%

On the Competition between Intergranular and Transgranular Failure within 7xxx Al Alloys with Tailored Microstructures

et al. 2023

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“…Here, the formation of Mg 2 Si-phases and dispersoids may be controlled by means of suited twostage homogenisation practices. After the first step of high-temperature soaking, the rolling slab is slowly cooled down to a lower sub-homogenisation temperature before hot rolling commences [31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Formation of intermetallic particles during solidification and homogenisation of two Al–Mg–Si alloys

Engler¹,

Schröter²,

Krause³

2023

Materials Science and Technology

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Several key properties of aluminium semi-finished products, including formability, softening behaviour, strength and ductility, are influenced by the constitution of alloying elements in solid solution or in precipitated form, i.e. by the materials microchemistry. In the present paper, we study microchemistry reactions in two Al–Mg–Si automotive sheet alloys, AA 6005C and AA 6016, with different Mg:Si ratios. The formation of constituent phases and dispersoids during solidification and subsequent homogenisation is analysed by scanning electron microscopy and measurements of the specific electrical resistivity. Type, composition and volume fraction of the constituent phases in the as-cast state are assessed with the Alstruc solidification model. The changes in solute level and precipitation during homogenisation are traced with a statistical microchemistry simulation tool termed ClaNG.

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“…Especially viscoplastic self-consistent (VPSC) modeling has been established as reliable method for investigating texture evolution during plastic deformation [6,7]. It has been successfully employed for investigating different steels and non-iron alloys, including in particular aluminum alloys of the 1xxx [8], 2xxx [9][10][11], 5xxx [11][12][13][14][15][16][17][18][19][20], 6xxx [11,[20][21][22] and 7xxx [11,[22][23][24] series.…”

Section: Introductionmentioning

confidence: 99%

Viscoplastic Self-Consistent (VPSC) Modeling for Predicting the Deformation Behavior of Commercial EN AW-7075-T651 Aluminum Alloy

Domitner

Buzolin

Patil

et al. 2022

KEM

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Viscoplastic self-consistent (VPSC) modeling was used for investigating the deformation behavior of commercial EN AW-7075-T651 aluminum alloy at room temperature under quasi-static tension and compression (i) parallel, (ii) diagonal and (iii) transverse to the rolling direction. Textures of the as-received plate and of the samples after tensile and compression testing were determined using electron backscatter diffraction (EBSD). Euler angles and area fractions of the grains were used as input for calculating direction-dependent flow curves and pole figures of the deformed material. The coefficients of the integrated Voce strain hardening law were adjusted in order to fit the calculated flow curves to flow curves obtained from tensile and compression testing. Pole figures calculated with the VPSC modeling method were validated with pole figures obtained from EBSD analysis of deformed samples. VPSC modeling was successfully applied for predicting the general deformation behavior of EN AW-7075-T651 under both tension and compression. However, texture evolution during tensile testing was negligible, whereas notable texture evolution during compression testing occurred beyond a critical strain value.

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The effect of Mg and Si content on the microstructure, texture and bendability of Al–Mg–Si alloys

Cited by 32 publications

References 44 publications

On the Competition between Intergranular and Transgranular Failure within 7xxx Al Alloys with Tailored Microstructures

On the Competition between Intergranular and Transgranular Failure within 7xxx Al Alloys with Tailored Microstructures

Formation of intermetallic particles during solidification and homogenisation of two Al–Mg–Si alloys

Viscoplastic Self-Consistent (VPSC) Modeling for Predicting the Deformation Behavior of Commercial EN AW-7075-T651 Aluminum Alloy

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