Effect of Co and Ni Addition on the Microstructure and Mechanical Properties at Room and Elevated Temperature of an Al–7%Si Alloy

Bogdanoff, Toni; Dahle, A. K.; Seifeddine, Salem

doi:10.1007/s40962-017-0178-z

Cited by 27 publications

(15 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Bogdanoff et al [14] showed that the combined addition of cobalt (Co) and Ni improved the mechanical properties of a cast Al-Si alloy at elevated temperatures with a 32% improvement of UTS at 230 • C, this improvement could be a result of dispersion strengthening or due to higher degree of contiguity in the 3D network of Co-and Ni-rich phases and eutectic Al-Si. Florian et al [15] investigated the effect of Ni on the high-temperature strength of Al-Si cast alloys; the strength can be increased at 250 • C, Al 3 Ni phases stabilized the Al-Si eutectic network.…”

Section: Introductionmentioning

confidence: 99%

The Influence of La and Ce on Microstructure and Mechanical Properties of an Al-Si-Cu-Mg-Fe Alloy at High Temperature

Jarfors

Zheng

et al. 2021

Metals

View full text Add to dashboard Cite

The effect of lanthanum (La)+cerium (Ce) addition on the high-temperature strength of an aluminum (Al)–silicon (Si)–copper (Cu)–magnesium (Mg)–iron (Fe)–manganese (Mn) alloy was investigated. A great number of plate-like intermetallics, Al11(Ce, La)3- and blocky α-Al15(Fe, Mn)3Si2-precipitates, were observed. The results showed that the high-temperature mechanical properties depended strongly on the amount and morphology of the intermetallic phases formed. The precipitated tiny Al11(Ce, La)3 and α-Al15(Fe, Mn)3Si2 both contributed to the high-temperature mechanical properties, especially at 300 °C and 400 °C. The formation of coarse plate-like Al11(Ce, La)3, at the highest (Ce-La) additions, reduced the mechanical properties at (≤300) ℃ and improved the properties at 400 ℃. Analysis of the strengthening mechanisms revealed that the load-bearing mechanism was the main contributing mechanism with no contribution from thermal-expansion mismatch effects. Strain hardening had a minor contribution to the tensile strength at high-temperature.

show abstract

Section: Introductionmentioning

confidence: 99%

The Influence of La and Ce on Microstructure and Mechanical Properties of an Al-Si-Cu-Mg-Fe Alloy at High Temperature

Jarfors

Zheng

et al. 2021

Metals

View full text Add to dashboard Cite

show abstract

“…As the Ni content of the alloy increased, the grain size is observed to increase up to 16.25 μm in Cu-Fe-Ni alloy coatings element and this effect is may be caused by the formation of Cu-rich intermetallic prior to the nucleation of α-Fe dendrites [22]. By increasing the Ni content, This little nodule structure also changes to globular structure [23].…”

Section: Fig 4 Surface Morphology Of Cu-fe-ni Alloys Without and With...mentioning

confidence: 98%

Effect of Ni Concentration in Cu-Fe-Ni alloys Coating on mild steel substrate Prepared by Electrochemical Deposition

Ayoub

Ahmad

Rehman

2022

Preprint

View full text Add to dashboard Cite

Mild steel has applications in construction, automobiles, mechanical engineering and general purpose fabrication, fencing, cages, frames, furniture components for different shapes, pipelines and other in industries. Cu-Fe-Ni alloy coating with different concentration of Ni was produced on low carbon steel substrate by electrodeposition in this research. This technique is favorable to us because of its low cost and easy to approach. The electrolytic bath contained the 31.92g/l CuSO4, 54.2 g/l FeSO4, NiSO4.7H2O (0.00 g/l, 14.04 g/l, 28.08 g/l, 42.12 g/l) and 15.4 g/l H3BO3 as buffer to maintain pH at 3. The electrodeposition is done at suitable deposition parameters. The effect of Ni concentration on the surface morphology, structure and mechanical properties of coating were revealed by scanning electron microscope (SEM), X-ray diffraction (XRD) analysis and Vicker hardness tester respectively. Obtained results showed that with the increase in Ni content grain size increases and elongation decreases while the mechanical properties increases. The thickness of deposited Cu-Fe-Ni alloys has decreasing trend of thickness with increasing of Ni contents.

show abstract

“…Zatezna čvrstoća se povećava sa smanjenjem veličine zrna. Za ispitivani materijal razlika u porastu vrednosti pothlađenja od 0,1ºC/s do 1,8ºC/s povećava zateznu čvrstoću za oko 15 MPa [10,11]. Formirana mikrostruktura u leguri Al-8wt%Si-3wt%Cu pripada tipičnoj nemodifikovanoj livenoj strukturi koja se sastoji od aluminijumske matrice, Al-Si i Al-Si-Cu eutektika (slika 5).…”

Section: Slika 4 -Efekat Brzine Hlađenja Na Vrednosti Pothlađenja Vre...unclassified

The effect of the refractory material on the phase transformation parameteres during forming of the Al-8wt%Si-3wt%Cu structure

Mitrašinović¹,

Nešković²,

Labus³

et al. 2023

Tehnika

View full text Add to dashboard Cite

Solidification of the aluminum alloys takes place in heat-resistant refractory materials made of either metal or oxides that are stable at high temperatures. The significantly different thermal conductivities between metals and heat-resistant oxides cause solidification with significantly different cooling rates. In this work, we formed a secondary Al-8wt%Si-3wt%Cu alloy in a stainless steel mould, a thin-walled stainless steel cup, and a thick-walled zirconium oxide cup. The course of the formation of the solidified structure was monitored by immersed thermocouples, which enabled the computer analysis of the cooling curves. The parameters on which the cooling rate had the most significant influence are the undercooling values of the formation of primary aluminum crystals, the time of the growth of primary aluminum crystals and the total solidification time from the formation of the first solid crystals to the formation of a fully solidified structure. The Al-8wt%Si-3wt%Cu aluminum alloy formed in metal mould has a smaller grain size and consequently higher tensile strength, lower macro-porosity and less rough surface than the alloy formed in refractory oxide coatings. The examined heat-resistant refractory material influenced the formation of three basic micro-constituents in the Al-8wt%Si-3wt%Cu alloy in different time intervals, which led to the formation of a different microstructure, where the decision on the choice of material for the heat-resistant refractory material depends on the profitability of the entire process, the required quality of the external surfaces and required minimum strength of the final product.

show abstract

Effect of Co and Ni Addition on the Microstructure and Mechanical Properties at Room and Elevated Temperature of an Al–7%Si Alloy

Cited by 27 publications

References 18 publications

The Influence of La and Ce on Microstructure and Mechanical Properties of an Al-Si-Cu-Mg-Fe Alloy at High Temperature

The Influence of La and Ce on Microstructure and Mechanical Properties of an Al-Si-Cu-Mg-Fe Alloy at High Temperature

Effect of Ni Concentration in Cu-Fe-Ni alloys Coating on mild steel substrate Prepared by Electrochemical Deposition

The effect of the refractory material on the phase transformation parameteres during forming of the Al-8wt%Si-3wt%Cu structure

Contact Info

Product

Resources

About