Experimental investigation and thermodynamic prediction of the Cu–Sb–Zn phase diagram

Minić, Duško; Manasijević, Dragan; Ćosović, Vladan; Talijan, N.; Živković, Živan; Živković, Dragana; Premović, Milena

doi:10.1016/j.jallcom.2011.11.130

Cited by 17 publications

(11 citation statements)

References 13 publications

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“…Besides, in some ED patterns the reflections had a diffuse character. The measured average composition of two needle-like crystals was: Cu 20 Zr 50 Ag 30 .…”

Section: Microstructure Of Master Alloysmentioning

confidence: 99%

Solidification processes in Cu–Zr–Ag amorphisable alloy system

Janovszky

Sycheva

Tomolya

et al. 2014

Journal of Alloys and Compounds

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Abstract:The Cu-Zr-Ag system is one of Cu-Zr based bulk metallic glasses (BMG) that has been in the center of great interest for a long time. This work summarizes results on solidification in the Cu-Zr-Ag ternary alloys and relationship between the cooling rate and their microstructure. The alloys in a wide range of compositions were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and differential scanning calorimetry (DSC) techniques. The surface of stable liquidus miscibility gap has been presented by isothermal sections in this system. The central part of liquidus projection of the ternary Cu-Zr-Ag system is determined based on the harmonization of experimental results and the calculated phase diagrams. Due to the liquid separation, amorphous/crystalline composites could be obtained with a silver content up to 50 at%. The primary solidified phases were identified in different samples cooled with a controlled cooling rate (5 K/min), in the arc melting furnace (master alloys) and in a wedge shape mould. It has been shown that the m-phase (or AgCu 4 Zr) has the lowest and the (CuAg) 10 Zr 7 the highest driving force for nucleation in this system. It has been shown that the glass forming ability depends not only on the properties of atomic constituent but on the phases formed during the solidification of undercooled liquid.

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“…Besides, in some ED patterns the reflections had a diffuse character. The measured average composition of two needle-like crystals was: Cu 20 Zr 50 Ag 30 .…”

Section: Microstructure Of Master Alloysmentioning

confidence: 99%

Solidification processes in Cu–Zr–Ag amorphisable alloy system

Janovszky

Sycheva

Tomolya

et al. 2014

Journal of Alloys and Compounds

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“…The value of those UTS was comparable with the conventional high-strength brasses. 13) Elongations at break of Cu40Zn0.5Cr extruded materials are about 30%, which had suitable ductility. Figure 3 shows the EBSD results of extruded Cu40Zn and Cu40Zn0.5Cr alloys.…”

Section: Consolidation Process and Evaluation Of Materialsmentioning

confidence: 97%

“…A beta phase was increased at 973 K in Cu40Zn matrix. From the CuZn phase diagram, 13) beta phase increased with increasing temperature at over 727 K in the composition of 60 mass% Cu40 mass% Zn. It was considered that the much beta phase of Cu40Zn was precipitated during preheating the billets, and was remained in extrusion.…”

Section: Consolidation Process and Evaluation Of Materialsmentioning

confidence: 98%

“…These elements work as solute strengthening of both ¡ phase and ¢ phase, precipitation strengthening, and grain refinement. 13) These alloys have 500700 MPa ultimate tensile strength (UTS), which is 1.52 times as that of the conventional machinable brass alloy. However, the ductility and machinability of the conventional high strength brass alloys are significantly reduced because of the formation of brittle intermetallic compounds.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure and Mechanical Properties of Cu–40%Zn–0.5%Cr Alloy by Powder Metallurgy

Imai¹,

Kondoh³

et al. 2014

Mater. Trans.

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In this study, the microstructure and mechanical properties of Cu40Zn brass alloy with 0.5 mass% Cr additives produced by powder metallurgy (P/M) process were investigated. Cu40Zn0.5Cr and Cu40Zn brass powders were made by water-atomization process, and used as raw materials. These powders were consolidated by hot extrusion at various temperatures by considering the precipitation behavior of ¢ phase and Cr. Yield stress of Cu40Zn0.5Cr extruded at 773 K was 514.6 MPa, while that of the monolithic Cu40Zn extruded at the same temperature was 332.6 MPa. Solid solution of chromium in the Cu40Zn0.5Cr brass alloy extruded at 773 K was about twice as that of the same brass alloy extruded at 873 K. The strength impact of Cr solid solution was much effective compared to Cr precipitation strengthening. The ratio of solid solution strengthening by chromium additive was 130 MPa/mass% [Cr]. The grain size of extruded materials increased with increasing the extrusion temperature.

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“…Some researchers use the heating curve, some use the cooling curve, yet others use both. [22][23][24][25] In the present study, both heating and cooling curves were taken into account (Fig. 1).…”

Section: Thermal Analysismentioning

confidence: 99%

Effect of Ag and Pb Addition on Microstructural and Mechanical Properties of SAC 105 Solders

Molnár

Janovszky

Kardos

et al. 2015

Journal of Elec Materi

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Melting and crystallization processes of lead-free and lead-contaminated alloys in near-equilibrium state were investigated. In addition, the effect of silver content up to 4 wt.% on the microstructure of Sn-Ag-Cu alloys was studied. The volume fraction of b-Sn decreased by half owing to 4 wt.% Ag content. Furthermore, contamination by lead strongly influences the properties of the solidified microstructure. The Pb grains appear as a result of two processes when the Pb content is equal to 0.5 wt.% or higher: Pb phase solidifies in the quaternary eutectic at 176°C, and Pb grains precipitate from the primary b-Sn solid solution grain during a solid state reaction. The freezing range enlarges to 51°C due to 2 wt.% Pb content owing to quaternary eutectic. Above 1 wt.% Pb content, the mechanical properties also improve due to grains of quaternary eutectic Pb and precipitated Pb grains with a size <1 lm.

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Experimental investigation and thermodynamic prediction of the Cu–Sb–Zn phase diagram

Cited by 17 publications

References 13 publications

Solidification processes in Cu–Zr–Ag amorphisable alloy system

Solidification processes in Cu–Zr–Ag amorphisable alloy system

Microstructure and Mechanical Properties of Cu–40%Zn–0.5%Cr Alloy by Powder Metallurgy

Effect of Ag and Pb Addition on Microstructural and Mechanical Properties of SAC 105 Solders

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Experimental investigation and thermodynamic prediction of the Cu–Sb–Zn phase diagram

Cited by 17 publications

References 13 publications

Solidification processes in Cu–Zr–Ag amorphisable alloy system

Solidification processes in Cu–Zr–Ag amorphisable alloy system

Microstructure and Mechanical Properties of Cu&ndash;40%Zn&ndash;0.5%Cr Alloy by Powder Metallurgy

Effect of Ag and Pb Addition on Microstructural and Mechanical Properties of SAC 105 Solders

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Microstructure and Mechanical Properties of Cu–40%Zn–0.5%Cr Alloy by Powder Metallurgy