The effect of Zn on the age hardening response in an Al–Mg–Si alloy

Ding, Xianfei; Cui, Hua; Zhang, J.X.; Li, H.X.; Guo, Min; Li, Zhi; Zhuang, Linzhong

doi:10.1016/j.matdes.2014.09.086

Cited by 74 publications

(29 citation statements)

References 25 publications

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“…The precipitates reported in the literature are given in Table V. [20,21,30] The precipitates observed in this study agree with those reported in the literature. This study reveals that the g¢-MgZn 2 phase exists in the Al-8.1 wt pct Mg-2.6 wt pct Si-3.59 wt pct Zn alloy after heat treatment (solution treatment at 510°C for 180 minutes, water quenching and then aging at 180°C for 90 minutes).…”

Section: Resultssupporting

confidence: 90%

“…[19] Similarly, Yan et al [20] found that the mechanical properties of Al-Mg-Si-Cu alloys are enhanced by Zn addition, yielding an alloy with a yield strength of 270 MPa, an UTS of 335 MPa, and an elongation of 26.5 pct. Ding et al [21] also found that the addition of 3.0 wt pct Zn can significantly enhance age hardening of Al-Mg-Si alloys. Therefore, it is worthwhile investigating the effect of Zn addition to Al-Mg-Si alloys processed by gravity die casting, the improvement in the properties, and the strengthening mechanism.…”

Section: Introductionmentioning

confidence: 94%

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Effect of Zn Concentration on the Microstructure and Mechanical Properties of Al-Mg-Si-Zn Alloys Processed by Gravity Die Casting

Zhu

et al. 2018

Metall Mater Trans A

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The microstructure and mechanical properties of Al-8.1Mg-2.6Si-(0.08 to 4.62)Zn alloys (in wt pct) have been investigated by the permanent mold casting process. X-ray diffraction analysis shows that the s-Mg 32 (Al, Zn) 49 phase forms when the Zn content is 1.01 wt pct. With higher Zn contents of 2.37 and 3.59 wt pct, the g-MgZn 2 and s-Mg 32 (Al, Zn) 49 phases precipitate in the microstructure, and the g-MgZn 2 phase forms when the Zn content is 4.62 wt pct. Metallurgical analysis shows that the g-MgZn 2 and s-Mg 32 (Al, Zn) 49 phases strengthen the Al-8.1Mg-2.6Si-(0.08 to 4.62)Zn alloys. After solutionizing at 510°C for 180 minutes and aging at 180°C for 90 minutes, the g¢-MgZn 2 phase precipitates in the a-Al matrix, which significantly enhances the mechanical properties. Addition of 3.59 wt pct Zn to the Al-8.1Mg-2.6Si alloy with heat treatment increases the yield strength from 96 to 280 MPa, increases the ultimate tensile strength from 267 to 310 MPa, and decreases the elongation from 9.97 to 1.74 pct.

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Section: Resultssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 94%

Effect of Zn Concentration on the Microstructure and Mechanical Properties of Al-Mg-Si-Zn Alloys Processed by Gravity Die Casting

Zhu

et al. 2018

Metall Mater Trans A

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“…Recently, extensive studies [9][10][11][12][13][14][15][16][17][18] were performed on the Al-Si-Cu/Mg alloy in the as-cast and heat treated states. Karamouz et al [9] studied the effect of Li addition in A380 cast alloy in the as-cast and T4 heat treated states.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, additions of Sr modified the alloy microstructure which significantly improved the alloy properties at room temperature. Recent studies [11,12,15,17,14] showed that aging characteristics of the Al-Si-Cu/Mg alloy can also be influenced by additions of Mg, Fe, Zn and Cu which considerably alter the alloy mechanical properties, especially the impact and tensile strength.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of Al–Si cast alloy with additions of Zr–V–Ti

et al. 2015

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“…Thus, investigating the interplay between various factors that give rise to anisotropy is crucial to achieve control over direction-dependent properties in these alloys. Precipitation hardenable wrought aluminium alloys find extensive applications in aerospace and automotive industry for structural parts because of their ability to show many fold increase in the strength upon artificial ageing [3,4]. The enhanced strength of a precipitation hardenable alloy is attributed to the interaction of glissile or mobile dislocations with finely dispersed precipitates [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Effect of crystallographic texture on precipitation induced anisotropy in an aluminium magnesium silicon alloy

2015

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Please cite this article as: Sumeet Mishra, Kaustubh Kulkarni, N.P. Gurao, Effect of crystallographic texture on precipitation induced anisotropy in an aluminium magnesium silicon alloy, (2015), AbstractThe effect of crystallographic texture on precipitation induced anisotropy in yield strength of an aluminium magnesium silicon alloy was investigated. Solutionized samples were subjected to unidirectional and multi-step cross rolling to yield distinct crystallographic textures in the Al-Mg-Si alloy. The rolled sheets were then subjected to annealing followed by second solutionizing treatment to provide sheets with similar grain size and dislocation content but distinct texture. Ageing experiments were carried out on these sheets at 443K for different time intervals. It was observed that the evolution of anisotropy in yield strength of the age hardened alloy depends on texture. The difference in age hardening response brought about by varying initial texture controls the evolution of anisotropy in mechanical properties of the alloy. This was manifested in terms of transition from anisotropic to isotropic mechanical properties in the unidirectionally rolled samples after peak ageing. On the contrary, a transition from isotropic to anisotropic yield behaviour was observed for multistep cross rolled samples. This is attributed to enhanced precipitation hardening in crystallographically softer orientations compared to crystallographically harder orientations.

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The effect of Zn on the age hardening response in an Al–Mg–Si alloy

Cited by 74 publications

References 25 publications

Effect of Zn Concentration on the Microstructure and Mechanical Properties of Al-Mg-Si-Zn Alloys Processed by Gravity Die Casting

Effect of Zn Concentration on the Microstructure and Mechanical Properties of Al-Mg-Si-Zn Alloys Processed by Gravity Die Casting

Microstructure and mechanical properties of Al–Si cast alloy with additions of Zr–V–Ti

Effect of crystallographic texture on precipitation induced anisotropy in an aluminium magnesium silicon alloy

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