Role of the intermetallic phases in technological process of fixture brasses

Kondracki, M.; Gawroński, J.; Szajnar, J.

doi:10.1016/j.jmatprotec.2005.02.076

Cited by 7 publications

(5 citation statements)

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“…3). Although there is a discrepancy of the numerical results and experimental observations (lack of the Al 6 Mn phase in the structure), analysing the composition of the quaternary phase one can see that the amount of the main elements equals the sum of calculated phases with additional amount of silicon (Al 13 Fe 4 + Al 6 Mn + Si 2 ), which is very active in the systems with iron or manganese [14]. Before the solidus temperature there is another distinct heat effect, connected with Mg 2 Si crystallization (points F-G-H).…”

Section: Resultsmentioning

confidence: 85%

Archives of Foundry Engineering

Nuckowski

Kondracki

Wróbel

2019

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The article presents the results of research concerning to AlCu4MgSi alloy ingots produced using horizontal continuous casting process. The presented research was focused on the precise determination of phase composition of the precipitates formed during the solidification of ingots and the analysis of their thermal stability. In order to assess the morphology of precipitates in the AlCu4MgSi alloy, data obtained by using a computer simulation of thermodynamic phenomena were compiled with results obtained using advanced research techniques, i.e. High-temperature X-ray diffraction (HT-XRD), SEM-EDS, Thermal and derivative analysis (TDA) and Glow discharge optical emission spectroscopy (GD OES). SEM observations and analysis of chemical composition in micro-areas showed that the precipitates are mainly intermetallic θ-Al 2 Cu and β-Mg 2 Si phases, and also presence of Al 19 Fe 4 MnSi 2 intermetallic phase was confirmed by X-ray diffraction studies. Based on the prepared Thermo-Calc simulation data, high-temperature X-ray diffraction measurements were conducted.

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Section: Resultsmentioning

confidence: 85%

Archives of Foundry Engineering

Nuckowski

Kondracki

Wróbel

2019

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“…In order to ensure good friction property, iron, manganese and silicium were introduced in the alloy. These elements segregate into an intermetallic phase, the hardness of which is significantly higher than that of matrix [7]. Small intermetallic precipitates (a few tens or a few hundreds of nm) as well as bigger ones (up to 20 µm) are observed.…”

Section: Materials and Experimental Proceduresmentioning

confidence: 99%

Cyclic Behavior of an Industrial Brass Cu Zn32

Flegeau¹,

Taleb²,

Hauet³

et al. 2013

KEM

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The aim of this study is to investigate the cyclic behavior and the fatigue life of an industrial α/β brass through mechanical tests and microstructural observations. The main obtained results are about the cyclic behavior of the alloy and the characterisation of fatigue life in connection with the evolution of the microstructure. Cyclic tensile test shows a great and rapid evolution of the isotropic hardenig during cycling.

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“…Regardless of the examined fragment, EDS maps show that aluminum is almost completely dissolved into the copper-rich matrix, as already mentioned when discussing the composition of the alloys (Section 3.1). Finally, the presence of tin in interdendritic areas of alloys is probably due to microsegregation phenomena [56,57].…”

Section: Alloy Microstructurementioning

confidence: 99%