Modification effect of Ni–38wt.%Si on Al–12wt.%Si alloy

Wu, Yuying; Liu, Xiangfa; Jiang, Binggang; Huang, Chuanzhen

doi:10.1016/j.jallcom.2008.09.140

Cited by 8 publications

(8 citation statements)

References 24 publications

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“…It is evident from the micrographs shown in Figure 2 on the right that the solution treatment changes the fibrous interconnected eutectic silicon particles detected in the ascast condition into globular particles with rounded edges. e evolution of the morphology of the eutectic silicon particles from fibrous to globular in these alloys is a direct result to the combined effect of solution-heat treatment and strontium modification, as previously stated by Chen et al [31] and Yuying et al [32].…”

Section: Characteristics Of Eutectic Silicon Particlessupporting

confidence: 58%

“…In addition, the ductility of the solutionized M1S alloy also shows an increase of ∼5% over the ductility value obtained for the as-cast condition. On the other hand, the other alloys, i.e., M2S through M5S, show small improvements, in the range of 2-10 MPa for UTS values, and a noticeable reduction in YS values (18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35)(36) MPa) compared to their strength values in the as-cast condition. e ductility values of alloys M2S through M5S increase after solution treatment.…”

Section: Ambient-temperature Tensilementioning

confidence: 99%

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Mechanical Performance of Zr‐Containing 354‐Type Al‐Si‐Cu‐Mg Cast Alloy: Role of Additions and Heat Treatment

Abdelaziz

Doty

Valtierra³

et al. 2018

Advances in Materials Science and Engineering

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In this article, the volume fraction of intermetallic compounds in Zr-containing 354-type Al-Si-Cu-Mg alloys, characteristics of eutectic Si particles, and tensile, hardness, and impact properties have been evaluated with varying Ni and Mn contents and combination. The results revealed that additions of Ni and Mn in different amounts and combinations increased the volume fraction of intermetallic compounds in the tailored alloys, compared to the base alloy (cf. 12.21% for 4% Ni-containing alloy with 2.5% for base alloy), producing a significant effect on the mechanical performance. The proposed additions enhanced the mechanical performance of the alloys, namely, the ambient- and elevated-temperature tensile properties, hardness values, and impact properties. For the Mn-containing alloys, the improvement in properties was attributed to the formation of sludge particles in the form of blocky α-Al15(Fe,Mn)3Si2 alongside the script-like α-iron phase that resisted crack propagation. The precipitation of Ni-bearing phases such as Al9FeNi, Al3CuNi, and Al3Ni in the Ni-containing alloys improved the mechanical properties through hindering cracks propagation. Interestingly, addition of 0.75 wt.% Mn to the base alloy proved to be competitive in strength values to the addition of 2 and 4 wt.% Ni, and better in terms of ductility values. The investigations showed that the variations in hardness and impact values follow the same trend as variations in the percentage volume fraction of intermetallic compounds, i.e., maximum property value is associated to the alloy with highest volume fraction of intermetallic compounds. Furthermore, the impact properties showed higher dependency on Al2Cu phase particles rather than the eutectic Si particles.

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Section: Characteristics Of Eutectic Silicon Particlessupporting

confidence: 58%

Section: Ambient-temperature Tensilementioning

confidence: 99%

Mechanical Performance of Zr‐Containing 354‐Type Al‐Si‐Cu‐Mg Cast Alloy: Role of Additions and Heat Treatment

Abdelaziz

Doty

Valtierra³

et al. 2018

Advances in Materials Science and Engineering

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“…The phenomenon has been reported in various literatures [96,104,112,126]. Grain refinement substantially promotes the final microstructure and properties of the MMNCs because of structural heredity effects [127][128][129]. The crystallite size (D) of the milled powder can be determined by XRD characterization and Scherrer formula:…”

Section: High Cost; Limited Powder Quantitymentioning

confidence: 92%

Particle-reinforced metal matrix nanocomposites fabricated by selective laser melting: A state of the art review

Sing

Chua

et al. 2019

Progress in Materials Science

424

106

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“…Основным модификатором для заэвтектического силумина является фосфор, уменьшающий размер кристаллов первичного силумина и меняющий их форму, снижая концентрацию напряжений в структуре [18,21,[49][50][51][52][53]. Фосфор вводят в расплав Al−Si различными способами для усиления эффективности модифицирования, в основном в соединении с другими элементами, применяя литые мастер-сплавы на основе Al, Si, Cu [18,21,[49][50][51][52][53]. Вместе с тем формирование таких мастер-сплавов связано с опасными загрязнениями производства и поэтому исследуются другие перспективные направления создания модификаторов с фосфором.…”

Section: модификаторы в промышленныхunclassified

“…В работе [49] исследовали влияние модифицирования фосфором на физические характеристики заэвтектического силумина с использованием дифференциального сканирующего калориметра (ДСК), позволяющего наблюдать кинетику кристаллизации и плавления, и микроанализатора (EPMA). Из результатов расчетов был сделан вывод об уменьшении величин энергии активации и работы образования зародышей эвтектической структуры и в то же время увеличении частоты образования зародышей в сравнении с составом без фосфора.…”

Section: модификаторы в промышленныхunclassified

Влияние модифицирующих элементов на структуру и механические свойства литейных Al-Si-сплавов

Осипов¹

2022

Журнал Технической Физики

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The state of scientific research on the modification of aluminum-silicon (Al-Si) alloy with strontium, sodium, phosphorus, which are widely employed in industrial alloys, and the modification of Al-Si alloy with intensively studied rare-earth elements (cerium, europium, samarium and others) was analyzed. Scientific articles related to the study of the effect of modifiers on the mechanical properties, mainly on the strength and ductility of hypoeutectic, eutectic and hypereutectic alloys was considered. On the basis of a literary data analysis, ways of improving the mechanical properties have been proposed by jointly modifying several elements, the possibility of forming the solely eutectic structure in the hypereutectic composition alloy 0.01 wt% strontium (Sr) modified and directionally crystallized at a rate that provides paired growth of the eutectic components is noted. This composition of Al-Si alloy has superfine-grained eutectic structure, its strength and ductility exceed the mechanical properties of Al-Si alloys obtained by other techniques.

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Modification effect of Ni–38wt.%Si on Al–12wt.%Si alloy

Cited by 8 publications

References 24 publications

Mechanical Performance of Zr‐Containing 354‐Type Al‐Si‐Cu‐Mg Cast Alloy: Role of Additions and Heat Treatment

Mechanical Performance of Zr‐Containing 354‐Type Al‐Si‐Cu‐Mg Cast Alloy: Role of Additions and Heat Treatment

Particle-reinforced metal matrix nanocomposites fabricated by selective laser melting: A state of the art review

Влияние модифицирующих элементов на структуру и механические свойства литейных Al-Si-сплавов

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