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Erschienen in: Rare Metals 7/2015

01.07.2015

Quasicrystal dissolution and performance of isothermally heat-treated Mg–Zn–Y alloy

verfasst von: Di-Qing Wan, Xian Luo, Ya-Juan Liu, Tian Yu

Erschienen in: Rare Metals | Ausgabe 7/2015

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Abstract

Conventional casting method was employed to prepare Mg–Zn–Y alloy only with α-Mg+I-phase; however, the grain size of quasicrystal is quite large in the as-cast state. Therefore, isothermal treatment was applied to refine the quasicrystal phase. The result shows that after the Mg–Zn–Y alloy was isothermally treated at 500 °C for several hours, the coarse quasicrystal can be gradually dissolved and thus refined. Generally, the dissolving processes of quasicrystal are slow first and then accelerate; after isothermally treated with 8 h at 500 °C, the quasicrystal is almost completely dissolved into the matrix only with 1–5 μm tiny quasicrystals remained. Refinement of quasicrystal can markedly reduce the wear resistance, but increase the corrosion resistance.

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Metadaten
Titel
Quasicrystal dissolution and performance of isothermally heat-treated Mg–Zn–Y alloy
verfasst von
Di-Qing Wan
Xian Luo
Ya-Juan Liu
Tian Yu
Publikationsdatum
01.07.2015
Verlag
Nonferrous Metals Society of China
Erschienen in
Rare Metals / Ausgabe 7/2015
Print ISSN: 1001-0521
Elektronische ISSN: 1867-7185
DOI
https://doi.org/10.1007/s12598-013-0119-9

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