Preparation of a novel Al–3B–5Sr master alloy and its modification and refinement performance on A356 alloy

Cui, Xiaoli; Wu, Yuying; Gao, Tong; Liu, X.F.

doi:10.1016/j.jallcom.2014.06.205

Cited by 48 publications

(17 citation statements)

References 15 publications

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“…For this reason, many scholars have carried out a lot of research work. For example, Liu et al prepared Al-3B-5Sr master alloy by in-situ reaction method [9]. Qiu et al prepared Al-6Sr-7La master alloy with rare earth elements and Sr as refining and modifying elements respectively [10].…”

Section: Introductionmentioning

confidence: 99%

“…These intermediate alloys can not only modify eutectic Si phase, but also refine α-Al of Al-Si alloy. However, the interaction between Sr and B will inevitably produce SrB 6 compound in the smelt, which enormously reduces the effect of refining and modification of Al-Si alloy [9]. For the sake of making up for the deficiency of the master alloy containing Sr and B elements, Rao et al [11] together with Zhao et al [8] have successively developed the Al-Ti-C-Sr intermediate alloy, and their refining and modification effects have been studied.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Al-5Ti-0.62C-1.07La intermediate alloy on the microstructure and mechanical properties of A356 aluminum alloy

Ding

Zhang

et al. 2020

Mater. Res. Express

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The physical characters that belong to hypo-eutectic Al-Si alloys are affected by certain important factors including the dimension, distribution together with structure of eutectic Si crystals together with primary α-Al. In this paper, A356-x Al-5Ti-0.62C-1.07La (x=0, 4, 5, 6, 7 wt%) alloys are was prepared by mechanical stirring. The effects of Al-5Ti-0.62C-1.07La intermediate alloy on the microstructures and mechanical properties of A356 alloy are investigated. Results show that the primary α-Al was significantly refined by Al-5Ti-0.62C-1.07La intermediate alloy. The secondary dendrite arm space (SDAS) of unrefined α-Al is approximately 40 μm. When the substance of Al-5Ti-0.62C-1.07La intermediate alloy is 6 wt%, SDAS declines to 10 μm. In addition, the component part of eutectic Si turns from thick acicular/schistose to short rod-like together with a section of pellets. Adding 6 wt% Al-5Ti-0.62C-1.07La intermediate alloy, A356-T6 alloy obtained the best tensile function and hardness. The ultimate tensile strength (UTS), elongation (El) together with Vickers hardness (HV) are 183.5 MPa, 8.2% and 62.3, which is increased by 30.3%, 95.2% and 38.1%, respectively. Furthermore, the variation in mechanical properties change with the development of micro-structure.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Al-5Ti-0.62C-1.07La intermediate alloy on the microstructure and mechanical properties of A356 aluminum alloy

Ding

Zhang

et al. 2020

Mater. Res. Express

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“…Wang found that the morphologies of TiAl 3 , TiB 2 , AlB 2 and AlB 12 phases form different synthesis temperature of the Al-3%Ti-3%B master alloy were effect to reduce the α-Al phase in Al-Si alloys [16]. Cui, reported SrB 6 phase of Al-3B-5Sr master alloy can refine the α-Al of A356 alloy but have not investigated the size and morphology on grain refinement and eutectic modification efficiencies [17].…”

Section: Introductionmentioning

confidence: 99%

Effect of cooling rates of production process of Al-3%B-3%Sr master alloy on grain refinement and eutectic modification efficiency in cast A356 alloy

Eidhed

Muangnoy

2018

MATEC Web Conf.

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Abstract. In this paper, size and morphology of the grain refiner and modifier particles in the Al-3%B-3%Sr master alloy production by using different cooling rates were investigated. Two Al-3%B-3%Sr master alloys were produced with 0.2 and 10°C/s, respectively. The grain refinement and eutectic modification efficiency of the Al-3%B-3%Sr master alloy were tested in casting process of A356 alloy by addition of 4wt.% and holding times for 10-120 min. The experimental result showed that microstructure of the M1 alloy (Slow cooling) consisted of larger solidified particles of AlB2, SrB6 and Al4Sr in the matrix of α-Al compared to the M2 alloy (Rapid cooling). The addition of the M1 alloy in cast A356 alloy, it was found that small grain size and fully modify eutectic silicon were obtained from the holding time in a range of 10-60 min. While the addition of M2 alloy, a small grain size was achieved in shorter holding time in a range of 10-30 min but the eutectic silicon was partly modify. From the thermal analyzed result, solidification of un-modified A356 alloy was changed after addition of Al-3%B-3%Sr master alloy. It was clearly observed that both the undercooling of nucleation and eutectic reaction was reduced and the solidification time was shifted to longer.

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“…As one of the most widely used commercial aluminum alloys, hypoeutectic Al–Si alloys have numerous advantages including lightweight, excellent casting characteristics, abrasive wear resistance, outstanding thermal expansion coefficient, and great thermal conductivity . With the addition of magnesium, Mg 2 Si phase as a heat treatment strengthening phase will precipitate in the alloy to increase the strength of hypoeutectic Al–Si alloys.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Microstructure of In Situ CaB₆–Al₄Ca/Al Composite Inoculant Ribbon and Its Refining and Modifying Effect on Al–10Si–0.3Mg Alloy

et al. 2018

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The Al-B-Ca alloy ingot is prepared by arc-melting with Al-3B and Al-10Ca master alloys and the in situ CaB 6 -Al 4 Ca/Al composite inoculant ribbon is carried out through melt-spinning of Al-B-Ca alloy ingot. Afterwards, Al-B-Ca alloy ingot and CaB 6 -Al 4 Ca/Al inoculant ribbon are added into the melt of Al-10Si-0.3Mg alloy as inoculants to verify their refining and modifying effects, respectively. It is found whether in Al-B-Ca alloy ingot or CaB 6 -Al 4 Ca/Al inoculant ribbon, CaB 6 particles have a cubic shape. Compared to the micron-sized CaB 6 particles in the ingot, the size of CaB 6 particles in the ribbon can reach to subnanoscale and nanoscale level. With the same amount of addition, CaB 6 -Al 4 Ca/Al inoculant ribbon has a better refining effect than Al-B-Ca alloy ingot, but both of them have similar modifying effects for eutectic silicon. In addition, the mechanical properties of Al-10Si-0.3Mg alloy inoculated by the ribbon are superior to that of Al-10Si-0.3Mg alloy inoculated by the ingot. The mismatch between CaB 6 and Al is particularly small and certain orientation relationships are existed between them. Therefore, the impact of CaB 6 particle size on refining effect of the inoculants, the heterogeneous nucleation mechanism of CaB 6 , and the strengthening mechanism of Al-10Si-0.3Mg alloy after inoculation are investigated.

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Preparation of a novel Al–3B–5Sr master alloy and its modification and refinement performance on A356 alloy

Cited by 48 publications

References 15 publications

Effects of Al-5Ti-0.62C-1.07La intermediate alloy on the microstructure and mechanical properties of A356 aluminum alloy

Effects of Al-5Ti-0.62C-1.07La intermediate alloy on the microstructure and mechanical properties of A356 aluminum alloy

Effect of cooling rates of production process of Al-3%B-3%Sr master alloy on grain refinement and eutectic modification efficiency in cast A356 alloy

Preparation and Microstructure of In Situ CaB₆–Al₄Ca/Al Composite Inoculant Ribbon and Its Refining and Modifying Effect on Al–10Si–0.3Mg Alloy

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Preparation of a novel Al–3B–5Sr master alloy and its modification and refinement performance on A356 alloy

Cited by 48 publications

References 15 publications

Effects of Al-5Ti-0.62C-1.07La intermediate alloy on the microstructure and mechanical properties of A356 aluminum alloy

Effects of Al-5Ti-0.62C-1.07La intermediate alloy on the microstructure and mechanical properties of A356 aluminum alloy

Effect of cooling rates of production process of Al-3%B-3%Sr master alloy on grain refinement and eutectic modification efficiency in cast A356 alloy

Preparation and Microstructure of In Situ CaB6–Al4Ca/Al Composite Inoculant Ribbon and Its Refining and Modifying Effect on Al–10Si–0.3Mg Alloy

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Preparation and Microstructure of In Situ CaB₆–Al₄Ca/Al Composite Inoculant Ribbon and Its Refining and Modifying Effect on Al–10Si–0.3Mg Alloy