Mechanical properties of equal channel angular pressed powder extrudates of a rapidly solidified hypereutectic Al-20wt% Si alloy

Yoon, Seung Chae; Hong, Soon‐Jik; Hong, Sun Ig; Kim, Hyoung Seop

doi:10.1016/j.msea.2006.01.164

Cited by 21 publications

(4 citation statements)

References 23 publications

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“…Similarly, the strength of Al–20Si SLM parts is higher than the values obtained by most manufacturing methods [34,35,36,37]. Yoon et al [36] reported an ultimate tensile strength of the Al–20Si alloy after extrusion and equal channel angular pressing of about 350 MPa. Furthermore, high pressure solidified Al–20Si samples show an UTS of 365 MPa after high pressure solidification [37].…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, conventional powder metallurgy techniques were used to fabricate Al–12Si alloys, and the tensile strength was observed to be 174 MPa and 220 MPa, respectively, after hot pressing and hot extrusion [33]. Similarly, the strength of Al–20Si SLM parts is higher than the values obtained by most manufacturing methods [34,35,36,37]. Yoon et al [36] reported an ultimate tensile strength of the Al–20Si alloy after extrusion and equal channel angular pressing of about 350 MPa.…”

Section: Resultsmentioning

confidence: 99%

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Microstructure and Mechanical Properties of Al–(12-20)Si Bi-Material Fabricated by Selective Laser Melting

Zhang

Jia

et al. 2019

Materials

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In this study, a combination of Al–12Si and Al–20Si (Al–(12-20)Si) alloys was fabricated by selective laser melting (SLM) as a result of increased component requirements such as geometrical complexity and high dimensional accuracy. The microstructure and mechanical properties of the SLM Al–(12-20)Si in as-produced as well as in heat-treated conditions were investigated. The Al–(12-20)Si interface was in the as-built condition and it gradually became blurry until it disappeared after heat treatment at 673 K for 6 h. This Al–(12-20)Si bi-material displayed excellent mechanical properties. The hardness of the Al–20Si alloy side was significantly higher than that of the Al–12Si alloy side and the disparity between both sides gradually decreased and tended to be consistent after heat treatment at 673 K for 6 h. The tensile strength and elongation of the Al–(12-20Si) bi-material lies in between the Al–12Si and Al–20Si alloys and fracture occurs in the Al–20Si side. The present results provide new insights into the fabrication of bi-materials using SLM.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Microstructure and Mechanical Properties of Al–(12-20)Si Bi-Material Fabricated by Selective Laser Melting

Zhang

Jia

et al. 2019

Materials

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“…Many researchers have focused on the modification and refinement of Si particles to obtain the optimal mechanical properties with wider applications. Various techniques have been improved to obtain the microstructure refinement of hypereutectic Al–Si alloys, such as spray forming [ 8 , 9 , 10 ], melt modification agent [ 11 , 12 , 13 ], melt thermal-rate treatment [ 14 ], equal channel angular pressing (ECAP) [ 15 , 16 ], squeeze casting [ 17 ], and so on. Among these techniques, chemical melt agent is well accepted as an excellent modifier of Si precipitation of aluminum alloy.…”

Section: Introductionmentioning

confidence: 99%

Study on the Anti-Poison Performance of Al–Y–P Master Alloy for Impurity Ca in Aluminum Alloys

et al. 2017

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In this article, the anti-poison performance of novel Al–6Y–2P master alloy for impurity Ca in hypereutectic Al–Si alloys was investigated in detail. According to the microstructural analysis, it can be found that the primary Si and eutectic Si particles could be relatively modified and refined. In order to investigate the influence mechanism of Ca on the limited refinement performance of Al–6Y–2P master alloy, types of Al–xSi–2Ca–3Y–1P (x = 0, 6, 12, 18, and 30) alloys were prepared. It is observed that Ca takes the form of more stable Ca3P2 compounds by reacting with YP, and the surface of Ca3P2 particles are unsmooth, and even some have wrinkles in Al Al–2Ca–3Y–1P alloy. With the increase of Si content in Al–xSi–2Ca–3Y–1P (x = 6, 12, 18 and 30) systems, the multi-encapsulation structures, i.e., the phosphide (AlP and YP), hexagonal Al2Si2Ca, the Al3Si2Y2 or primary Si from inside to outside in order were examined.The excapsulation of YP and AlP caused by Al2Si2Ca might be the reason for the limited refinement effect of Al–6Y–2P master alloy for hypereutectic Al–18Si alloys.

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“…Consequently, great efforts have been devoted to preparation of a bulk amorphous alloy from amorphous alloy powder by using various techniques of warm pressing, warm extrusion, explosive compaction, hot pressing, and spark plasma sintering [13,24]. The powder metallurgy process promotes high strength bonding between particles and a microstructure similar to that of a wrought product [25][26][27][28][29][30]. The purpose of this study is the investigation of the feasibility of fabricating amorphous Al 80 Fe 10 Ti 5 Ni 5 powders by mechanical alloying and consolidating them into bulk samples by a hot-pressing technique.…”

Section: Introductionmentioning

confidence: 99%

Consolidation of Amorphous Al₈₀Fe₁₀Ti₅Ni₅ Powders by Hot Pressing

Tavoosi

Karimzadeh

Kim

2012

Journal of Nanomaterials

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The current study investigates the feasibility of fabricating amorphous Al80Fe10Ti5Ni5powders by mechanical alloying and consolidating them into bulk samples by a hot-pressing technique. As-milled and hot-pressed samples were examined by X-ray diffraction, scanning electron microscopy, transition electron microscopy, and differential scanning calorimetry. The results showed that milling of Al80Fe10Ti5Ni5powder for 40 h and hot pressing at 550°C under 600 MPa led to a fully dense bulk sample. During consolidation, an AlTi intermetallic phase with average crystallite size of 10 nm precipitates in the amorphous matrix.

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Mechanical properties of equal channel angular pressed powder extrudates of a rapidly solidified hypereutectic Al-20wt% Si alloy

Cited by 21 publications

References 23 publications

Microstructure and Mechanical Properties of Al–(12-20)Si Bi-Material Fabricated by Selective Laser Melting

Microstructure and Mechanical Properties of Al–(12-20)Si Bi-Material Fabricated by Selective Laser Melting

Study on the Anti-Poison Performance of Al–Y–P Master Alloy for Impurity Ca in Aluminum Alloys

Consolidation of Amorphous Al₈₀Fe₁₀Ti₅Ni₅ Powders by Hot Pressing

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Mechanical properties of equal channel angular pressed powder extrudates of a rapidly solidified hypereutectic Al-20wt% Si alloy

Cited by 21 publications

References 23 publications

Microstructure and Mechanical Properties of Al–(12-20)Si Bi-Material Fabricated by Selective Laser Melting

Microstructure and Mechanical Properties of Al–(12-20)Si Bi-Material Fabricated by Selective Laser Melting

Study on the Anti-Poison Performance of Al–Y–P Master Alloy for Impurity Ca in Aluminum Alloys

Consolidation of Amorphous Al80Fe10Ti5Ni5 Powders by Hot Pressing

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Consolidation of Amorphous Al₈₀Fe₁₀Ti₅Ni₅ Powders by Hot Pressing