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Microstructure, texture and mechanical properties of a hot rolled Mg–6.5Gd–1.3Nd–0.7Y–0.3Zn alloy
Highlights ► A weak non-basal texture characterized by splitting basal poles toward transverse direction of the sheet was observed. ► The eutectic phase particles were effective on the grain refinement and texture weakening during hot rolling. ► Strength and elongation of the rolling direction specimen were both higher than those of the transverse direction specimen.
Abstract In present work, the microstructure, texture and mechanical properties of hot rolled Mg–6.5Gd–1.3Nd–0.7Y–0.3Zn alloy were investigated. The as-rolled alloy reveals a fully recrystallized grain structure, consisting of equiaxed grains of about 8μm diameter. And the eutectic phase in this alloy has been fragmented to small particles, which brings a promotion of grain refinement during rolling processing. A weak non-basal texture characterized by splitting basal poles toward transverse direction (TD) of the alloy sheet is obtained. The as-rolled alloy exhibits mechanical anisotropy that the 0.2% yield strengths and elongations in the rolling direction (RD) are both higher than those in the TD. It results from the non-basal texture and distribution of eutectic phase particles in the alloy sheet. Significant strengthening is achieved in the peak-aged alloy owing to the fine precipitates produced by isothermal ageing. And the mechanical anisotropy still exists.
Microstructure, texture and mechanical properties of a hot rolled Mg–6.5Gd–1.3Nd–0.7Y–0.3Zn alloy
Highlights ► A weak non-basal texture characterized by splitting basal poles toward transverse direction of the sheet was observed. ► The eutectic phase particles were effective on the grain refinement and texture weakening during hot rolling. ► Strength and elongation of the rolling direction specimen were both higher than those of the transverse direction specimen.
Abstract In present work, the microstructure, texture and mechanical properties of hot rolled Mg–6.5Gd–1.3Nd–0.7Y–0.3Zn alloy were investigated. The as-rolled alloy reveals a fully recrystallized grain structure, consisting of equiaxed grains of about 8μm diameter. And the eutectic phase in this alloy has been fragmented to small particles, which brings a promotion of grain refinement during rolling processing. A weak non-basal texture characterized by splitting basal poles toward transverse direction (TD) of the alloy sheet is obtained. The as-rolled alloy exhibits mechanical anisotropy that the 0.2% yield strengths and elongations in the rolling direction (RD) are both higher than those in the TD. It results from the non-basal texture and distribution of eutectic phase particles in the alloy sheet. Significant strengthening is achieved in the peak-aged alloy owing to the fine precipitates produced by isothermal ageing. And the mechanical anisotropy still exists.
Microstructure, texture and mechanical properties of a hot rolled Mg–6.5Gd–1.3Nd–0.7Y–0.3Zn alloy
Hou, Xiuli (author) / Cao, Zhanyi (author) / Zhao, Lei (author) / Wang, Lidong (author) / Wu, Yaoming (author) / Wang, Limin (author)
2011-06-29
6 pages
Article (Journal)
Electronic Resource
English
Microstructure, texture and mechanical properties of a hot rolled Mg-6.5Gd-1.3Nd-0.7Y-0.3Zn alloy
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