Experimental and numerical analysis of grain refinement effect on hot tearing susceptibility for Al–Mg alloys

Takai, Ryosuke; Endo, Naoki; Hirohara, Rei; Tsunoda, T.; Yoshida, Makoto

doi:10.1007/s00170-018-2791-2

Cited by 14 publications

(2 citation statements)

References 29 publications

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“…The HTS of 5ST was lower than that of 5S, similar to the result for 5T, primarily due to improved feeding capability and IMC dispersion and refinement, which the ref. [32] has also clarified. Increasing the Fe content (i.e., 5F) further raised the α-Al 15 (Fe,Mn) 3 Si 2 content, leading to higher pore density (Figure 10f).…”

Section: Influence Of Compositional Variation On Microstructurementioning

confidence: 97%

Effects of Fe, Si, Cu, and TiB2 Grain Refiner Amounts on the Hot Tearing Susceptibility of 5083, 6061, and 7075 Aluminum Ingots

Liang,

Huang,

Tseng

et al. 2023

Metals

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Aluminum alloys 5083, 6061, and 7075 are prone to hot tearing under direct-chill casting conditions; the defects that form during solidification of those alloys are highly sensitive to variation in the alloying elements, with these elements commonly being Si, Fe, Cu, and Ti. This study investigates the influence of the morphology, content, and size of intermetallic compounds on the hot tearing behavior of the 5083, 6061, and 7075 aluminum alloys by combining a constrained rod casting technique, phase diagram calculation, and multiscale microstructural characterizations. The fishbone-shaped α-Al15(Fe,Mn)3Si2 in 5083 can serve as a path for crack nucleation and growth, and an increase in Si content results in Mg2Si assuming fishbone morphology, thereby increasing hot tearing susceptibility. The amount of plate-like β-Al5FeSi is the primary factor controlling the hot tearing susceptibility of 6061. For 7075, increasing the Cu content can greatly enhance the remaining liquid fraction, feeding, and hot tearing susceptibility. For all three alloys, TiB2 grain refiner minimizes hot tearing. This study elucidates the influences of the amounts of Fe, Si, Cu, and TiB2 grain refiner on hot tearing susceptibility. The findings can help establish compositional control standards for the 5083, 6061, and 7075 aluminum alloy series, particularly when the recycling rate must be increased.

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Section: Influence Of Compositional Variation On Microstructurementioning

confidence: 97%

Effects of Fe, Si, Cu, and TiB2 Grain Refiner Amounts on the Hot Tearing Susceptibility of 5083, 6061, and 7075 Aluminum Ingots

Liang,

Huang,

Tseng

et al. 2023

Metals

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“…The thermal cracking sensitivity coefficient of the alloy can be calculated by Clyne-Davies’ model [18,19]. Up to now, most of the studies on hot tearing have focused on aluminium alloys, and there are relatively few studies on the hot tearing of magnesium alloys [20].…”

Section: Introductionmentioning

confidence: 99%

Effects of Y and Zn/Y on hot tearing susceptibility of Mg–Zn–Y–Zr alloys

Wei

Liu

Sheng³

et al. 2019

Materials Science and Technology

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The effects of Y and Zn/Y on hot tearing susceptibility (HTS) of Mg–6.5Zn– xY–0.5Zr ( x = 4, 9, 12 and 18) and Mg–5Zn–13.5Y–0.5Zr alloys were investigated herein. The results illustrated that HTS of the investigated alloys decreased in the following order: Mg–6.5Zn–4Y–0.5Zr > Mg–6.5Zn–18Y–0.5Zr > Mg–6.5Zn–9Y–0.5Zr > Mg–6.5Zn–12Y–0.5Zr > Mg–5Zn–13.5Y–0.5Zr. The results also showed that HTS of the α-Mg-based alloy containing only LPSO phase was lower than that of the alloy containing only W-phase and (I+W) or (W+LPSO) mixed secondary phases. This was attributed to the coherence relationship between LPSO phase and α-Mg, and the bridging effect of LPSO phase.

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Investigation on the Influence Mechanism of Mg Contents on the Hot Cracking Behavior of Al–Cu–Mg Alloys

Su,

Zhou,

Yue

et al. 2024

Metall Mater Trans B

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Experimental and numerical analysis of grain refinement effect on hot tearing susceptibility for Al–Mg alloys

Cited by 14 publications

References 29 publications

Effects of Fe, Si, Cu, and TiB2 Grain Refiner Amounts on the Hot Tearing Susceptibility of 5083, 6061, and 7075 Aluminum Ingots

Effects of Fe, Si, Cu, and TiB2 Grain Refiner Amounts on the Hot Tearing Susceptibility of 5083, 6061, and 7075 Aluminum Ingots

Effects of Y and Zn/Y on hot tearing susceptibility of Mg–Zn–Y–Zr alloys

Investigation on the Influence Mechanism of Mg Contents on the Hot Cracking Behavior of Al–Cu–Mg Alloys

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