Effect of secondary processing on the microstructure and wear behavior of spray formed Al–30Mg2Si–2Cu alloy

Goudar, Dayanand M.; Raju, K.; Srivastava, V. C.; Rudrakshi, G.B.

doi:10.1016/j.matdes.2012.11.010

Cited by 20 publications

(5 citation statements)

References 18 publications

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“…It can be observed from the micrographs that most of the secondary phases ('θ' and 'Q') are dissolved in the α-Al matrix which results in increased super saturation in the matrix. It is observed from the microstructure that the spheriodised Mg Si-2Cu [6] .…”

Section: Resultsmentioning

confidence: 99%

“…This indicates the crystalline growth of primary Mg 2 Si phase in SF alloy. [6] . Si-2Cu alloy [6] .…”

Section: Resultsmentioning

confidence: 99%

“…Due to slow cooling rate and broad temperature interval between the liquidus and solidus at higher Mg 2 Si content in the pseudo binary section of the phase diagram will cause castings with a coarse microstructure of Mg 2 Si phase as well as the eutectic constituents [7] . Si-2Cu [6] . In spray forming process, the solidification phenomena changes due to the effect of high cooling rate during the atomization stage and the unique microstructural evolution mechanism during deposition.…”

Section: Resultsmentioning

confidence: 99%

“…Figure 7. SEM micrograph of SF+HP + age hardened alloys (a) Al-20Mg 2 Si-2Cu, (b) Al-25Mg 2 Si-2Cu and a Al-30Mg 2 Si-2Cu lloy [6] . The fine Mg 2 Si phase combined with the Al 2 Cu precipitates can significantly increase the strength of the alloy.…”

Section: Resultsmentioning

confidence: 99%

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Microstructure and Mechanical Properties of Spray Formed and Hot Pressed/Heat Treated Al-(20-30 wt%) Mg2Si-2% Cu Alloy

Dm¹,

Vc²,

Rudrakshi³

2018

Res. Rev. J Mat. Sci

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The hypereutectic Al-Si alloys with alloying elements such as Mg, Cu, Fe and Mn have been successfully produced by modern processing technologies to improve strength to weight ratio, mechanical properties and wear behavior at elevated temperature [1]. Alloying of Al with high content of Mg and Si results in the formation of Mg 2 Si phase and eutectic Al-Mg-Si phase. Offers the possibility of significant decrease in density (density of Mg 2 Si-1.99 gcm-3) and increase in stiffness compared to other Al alloys and makes them superior material for the light weight automotive applications [2]. However, the slow cooling rate of the melt associated with conventional casting methods results in a coarse microstructure of primary phase and formation of large intermetallic phases with a high degree of micro-macro segregation. Al alloy with high content of Mg 2 Si poses several difficulties by conventional casting processes due to excessive slag formation and generation of porosity caused by high solubility of hydrogen

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Section: Resultsmentioning

confidence: 99%

“…This indicates the crystalline growth of primary Mg 2 Si phase in SF alloy. [6] . Si-2Cu alloy [6] .…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Microstructure and Mechanical Properties of Spray Formed and Hot Pressed/Heat Treated Al-(20-30 wt%) Mg2Si-2% Cu Alloy

Dm¹,

Vc²,

Rudrakshi³

2018

Res. Rev. J Mat. Sci

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“…This paper aims to study the TLP brazing of Al-25Si-4Cu-1Mg spray-formed alloy. Al-25Si-4Cu-1Mg alloy is a hypereutectic Al-Si alloy with Cu and Mg addition in which the formation of Al 2 Cu precipitation and Mg 2 Si or AlCuMgSi phases was helpful to improve the mechanical properties [25,27]. Pure Cu was selected as the intermediate layer because Cu is an element capable of solid solution strengthening and precipitation hardening in Al, and Cu can improve the high temperature and normal temperature performance of Al-Si alloy.…”

Section: Introductionmentioning

confidence: 99%

Interfacial Behavior and Shear Strength of Al-25Si-4Cu-1Mg Joints by Transient Liquid Phase Bonding with Cu as Interlayer

Gao

Wang

2021

Metals

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Spray-formed hypereutectic Al-Si-Cu-Mg alloy is the candidate for automotive and aerospace industries due to its superior wear resistance, lower thermal expansion coefficient and density, and higher thermal conductivity. This paper aims to investigate the bonding properties of hypereutectic Al-25Si-4Cu-1Mg alloys using the transient liquid phase (TLP) method with Cu as an interlayer. To obtain the suitable bonding parameters, the interfacial microstructure and shear strength of Al-25Si-4Cu-1Mg joints were investigated with the effect of different bonding temperatures and holding times. The results showed that TLP bonding between Al-Si-Mg-Cu alloy was mainly realized by large amounts of Al2Cu intermetallic compounds (IMCs), primary Si and α-Al phases. With the brazing temperature increasing, the width of the brazing seam gradually increased, and the voids began to be produced. With the holding time increasing, θ-Al2Cu phases approached into the base metal and Si particles in the brazing seam were obviously coarsened. With the formation of θ-Al2Cu phases into the base metal, more Si particles were segregated at the interface between brazing seam and base metal, and the shear test confirmed that it was the weakest bonding location. Finally, the effect of bonding parameters on the joint strength indicated that the joint brazed at 540 °C for 7.5 min presented the best shear performance with the shear strength reaching 75 MPa because the size of Si particles in the brazing seam was closest to the size of Si particles in base metal under this parameter.

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Spray Forming of Aluminium Alloys

Krug

2017

Metal Sprays and Spray Deposition

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Effect of secondary processing on the microstructure and wear behavior of spray formed Al–30Mg2Si–2Cu alloy

Cited by 20 publications

References 18 publications

Microstructure and Mechanical Properties of Spray Formed and Hot Pressed/Heat Treated Al-(20-30 wt%) Mg2Si-2% Cu Alloy

Microstructure and Mechanical Properties of Spray Formed and Hot Pressed/Heat Treated Al-(20-30 wt%) Mg2Si-2% Cu Alloy

Interfacial Behavior and Shear Strength of Al-25Si-4Cu-1Mg Joints by Transient Liquid Phase Bonding with Cu as Interlayer

Spray Forming of Aluminium Alloys

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