Effect of two-pass friction stir processing on the microstructure and mechanical properties of as-cast binary Al–12Si alloy

Aktarer, Semih Mahmut; Sekban, Dursun Murat; Saray, Onur; Küçükömeroğlu, Tevfik; Ma, Z.Y.; Pürçek, G.

doi:10.1016/j.msea.2015.03.111

Cited by 60 publications

(25 citation statements)

References 34 publications

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“…These result demonstrated that the increase in the number of passes resulted in more finer and equiaxed Si particles due to more plastic deformation and breakup of these particles. Similar results were presented in the literature in the case of Al-Si alloys[28][29][30][31].…”

supporting

confidence: 90%

Fabrication and wear characterization of an A413/Ni surface metal matrix composite fabricated via friction stir processing

2015

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supporting

confidence: 90%

Fabrication and wear characterization of an A413/Ni surface metal matrix composite fabricated via friction stir processing

2015

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“…FSP has been used in Al-Si alloys to improved mechanical properties, and shown remarkable improved properties and microstructure refinement [7][8][9]. It was reported that FSP effectively eliminates porosities, refines the coarser large primary silicon particles, and eutectic silicon by breaking up and distributing them into the aluminium matrix [6,10].…”

Section: Introductionmentioning

confidence: 99%

Influence of Friction Stir Process on Microstructure and Tensile Properties of LM28 Hypereutectic Al-Si Alloy

Abdulmalik

Ahmad²

2018

IJIE

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This paper reports an investigation of the influence of friction stir processing (FSP) on the microstructure modification, tensile properties and hardness of as cast hypereutectic LM28 aluminium silicon (Al-Si) alloy, aimed to decrease Silicon particles size, porosity, and enhancing tensile properties. Intense plastic deformation foisted by FSP resulted in a remarkable breaking up of the coarse eutectic and primary silicon particles into smaller ones, and closure of porosity. The area sizes of the fragmented Si particles decreased from 155.1 μm² to around 49.4 μm², aspect ratio of about 2.86 in the as cast condition decreased to around 1.63 after FSP. Porosity was also drastically reduced from 94 µm ECD, in the as cast condition to as low as 7.1 µm ECD. The strength and ductility of the alloy increased simultaneously after FSP. The increase in the tensile strength and ductility values after FSP, as compare to the as cast alloy was around 1.56, and 4.38 times respectively. The LM28 FS-processed alloy displayed an increase in quality index of around 1.97 times higher, than that of the as-cast alloy. The hardness of the alloy increased from 64.6 HV for the as-cast alloy to about 85.74 HV after FSP. Enhancement in all the properties was largely related to the pronounced changes of the shape, area size and distribution of the silicon particles along with the reduction of porosity FSP.

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“…The Mg-6Sn sample after two-pass FSP was named FSP2. The final microstructure and mechanical properties of FSP samples are largely influenced by the processing parameters, such as rotation speed, travel speed, and processing pass [13][14][15]. Compared to single-pass FSP, multi-pass FSP can further refine the grains with an increased level of accumulated strain and make the microstructure more uniform.…”

Section: Methodsmentioning

confidence: 99%

The Effect of Processing Pass on the Microstructure and Mechanical Properties of a Friction Stir Processed As-Cast Mg-6 wt % Sn Alloy

Zhang

Chen

Xiyun

et al. 2018

Metals

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In this study, as-cast Mg-6 wt % Sn alloy is subjected to one-pass and two-pass friction stir processing (FSP). The effect of processing pass on microstructure and mechanical properties of FSP Mg-6Sn alloy is investigated. It is found that one-pass FSP leads to the breakage and partial dissolution of the Mg2Sn phase in the stir zone (SZ) and two-pass FSP leads to the further dissolution and dynamic precipitation of the Mg2Sn phase. Dynamic recrystallization (DRX) takes place in the SZ of an Mg-6Sn alloy undergoing FSP. Compared to one-pass FSP, two-pass FSP brings about further grain refinement in the SZ. A strong {0001} basal texture is developed in the SZ of a Mg-6Sn alloy from FSP and the change of the sample region or processing pass has little influence on the texture. Compared to an as-cast Mg-6Sn sample, one-pass FSP brings about significant improvement in mechanical properties. Two-pass FSP leads to the further increase in yield strength (YS) and ultimate tensile strength (UTS) but elongation (EL) is reduced. The continuous increase in strength is attributed to the grain refinement and the dissolution and dynamic precipitation of Mg2Sn phase achieved by FSP.

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Effect of two-pass friction stir processing on the microstructure and mechanical properties of as-cast binary Al–12Si alloy

Cited by 60 publications

References 34 publications

Fabrication and wear characterization of an A413/Ni surface metal matrix composite fabricated via friction stir processing

Fabrication and wear characterization of an A413/Ni surface metal matrix composite fabricated via friction stir processing

Influence of Friction Stir Process on Microstructure and Tensile Properties of LM28 Hypereutectic Al-Si Alloy

The Effect of Processing Pass on the Microstructure and Mechanical Properties of a Friction Stir Processed As-Cast Mg-6 wt % Sn Alloy

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