Mechanical properties and microstructures of W-1%Y2O3 microalloyed with Zr

A design combining the advantages of oxide dispersion-strengthening, grain-boundary strengthening and hot-swaging leads to a high performance W-0.2%Zr-1%Y2O3 alloy with enhanced strength and ductility. The Y2O3 particles in tungsten could improve the strength and high-temperature properties, while t...

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Veröffentlicht in:	Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2016-04, Vol.660, p.19-23
Hauptverfasser:	Liu, R., Xie, Z.M., Zhang, T., Fang, Q.F., Wang, X.P., Hao, T., Liu, C.S., Dai, Y.
Format:	Artikel
Sprache:	eng
Schlagworte:	Design engineering Dispersion hardening alloys Grain boundaries Grain boundary Mechanical properties Microalloying Microstructure Oxide dispersion strengthening Oxides Strength Tungsten Tungsten base alloys
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Beschreibung
Zusammenfassung:	A design combining the advantages of oxide dispersion-strengthening, grain-boundary strengthening and hot-swaging leads to a high performance W-0.2%Zr-1%Y2O3 alloy with enhanced strength and ductility. The Y2O3 particles in tungsten could improve the strength and high-temperature properties, while trace Zr (0.2wt%) could getter oxygen impurity and enhance grain boundary cohesive strength.
ISSN:	0921-5093 1873-4936
DOI:	10.1016/j.msea.2016.02.072