Characterization of Hot Deformation of CW602N Brass

• Authors: S. Spigarelli , M. El Mehtedi , M. Cabibbo
• Languages of publication: EN

Abstracts

EN

Alpha brasses (in principle single-phase solid solution alloys containing less than 35% Zn) are usually processed by extrusion, forging or rolling. Although these materials are of widespread use, few detailed studies of the flow behavior of brass at high temperature are available. The hot workability of a CW602N brass (Cu-36.5%Zn-2%Pb) was thus investigated by torsion testing in the temperature range between 550 and 800°C, under equivalent strain rates ranging from 0.01 to 10 s^{-1}. The peak flow stress dependence on temperature and strain rate was described by the well-known Garofalo equation, with a stress exponent close to 4 and Q=220 kJ mol^{-1}. A considerably larger scatter of the experimental data was observed in the high temperature range. The detailed microstructural analysis of the deformed samples by scanning electron microscopy revealed substantial differences among the samples deformed in the low temperature regime and those torsioned at 750 and 800°C. These differences were analyzed and discussed to rationalize the different mechanical responses observed in the two hot-deformation regimes.

Keywords

EN

81.05.-t; 81.05.Bx; 81.20.-n; 81.40.Lm

Discipline

• 81.20.-n: Methods of materials synthesis and materials processing(see also 61.72.U- Doping and impurity implantation; for crystal growth, see 81.10.-h; for film growth, deposition and epitaxy, see 81.15.-z)
• 81.05.-t: Specific materials: fabrication, treatment, testing, and analysis(for superconducting materials, see 74.70.-b, and 74.72.-h; for magnetic materials, see 75.50.-y; for optical materials, see 42.70.-a; for dielectric materials, see 77.84.-s; for disperse systems and complex fluids, see 82.70.-y; see also 82.75.-z Molecular sieves, zeolites, clathrates, and other complex solids; for materials properties, see sections 60 and 70)
• 81.05.Bx: Metals, semimetals, and alloys
• 81.40.Lm: Deformation, plasticity, and creep(see also 83.50.-v Deformation and flow in rheology)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 128
• Issue: 4
• Pages: 726-729

Dates

published

2015-10

Contributors

author

S. Spigarelli

• DIISM, Università Politecnica delle Marche, via Brecce Bianche 60131 Ancona, Italy

author

M. El Mehtedi

• DIISM, Università Politecnica delle Marche, via Brecce Bianche 60131 Ancona, Italy

author

M. Cabibbo

• DIISM, Università Politecnica delle Marche, via Brecce Bianche 60131 Ancona, Italy

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Identifiers

DOI

10.12693/APhysPolA.128.726