Determination of room-temperature superplastic asymmetry and anisotropy of Zn-0.8Ag alloy processed by ECAP

Fine-grained Zn-0.8Ag alloy processed by equal channel angular pressing (ECAP) presents elongation over 650% and strain rate sensitivity 0.45 at room temperature. Examination along three orthogonal directions shows minimal superplastic anisotropy both under tension and compression. Measured tension-...

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Veröffentlicht in:	Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2019-06, Vol.759, p.55-58
Hauptverfasser:	Bednarczyk, Wiktor, Wątroba, Maria, Kawałko, Jakub, Bała, Piotr
Format:	Artikel
Sprache:	eng
Schlagworte:	Anisotropy Asymmetry Biomaterials Compression tests Elongation Equal channel angular pressing Equal channel angular pressing (ECAP) Grain boundary sliding Mechanical properties Plastic deformation anisotropy Room temperature Strain rate sensitivity Superplasticity Yield stress Zinc alloys Zinc base alloys
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Zusammenfassung:	Fine-grained Zn-0.8Ag alloy processed by equal channel angular pressing (ECAP) presents elongation over 650% and strain rate sensitivity 0.45 at room temperature. Examination along three orthogonal directions shows minimal superplastic anisotropy both under tension and compression. Measured tension-compression yield stress asymmetry indicates much easier grain boundary sliding under tension than compression.
ISSN:	0921-5093 1873-4936
DOI:	10.1016/j.msea.2019.05.029