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Effects of Al content on structure and mechanical properties of hot-rolled ZrTiAlV alloys
Highlights Phase structure is greatly dependent on the Al content. Intermetallic compound will precipitates while Al content is over 6.9wt%. Equiaxed α-phase grains present in the hot-rolled alloy with 6.9wt% Al. Alloys with Al content from 3.3wt% to 5.6wt% have good mechanical properties.
Abstract Zirconium alloys show attractive properties for astronautic applications where the most important factors are anti-irradiation, corrosion resistance, anti-oxidant, very good strength-to-weight ratio. The effects of Al content (2.2–6.9wt%) on structure and mechanical properties of the hot-rolled ZrTiAlV alloy samples were investigated in this study. Each sample of the hot-rolled ZrTiAlV alloys with Al contents from 2.2wt% to 5.6wt% is composed of the α phase and β phase, meanwhile, the relative content of the α phase increased with the Al content. However, the (ZrTi)3Al intermetallic compound was observed as the Al content increased to 6.9wt%. Changes of phase compositions and structure with Al content distinctly affected mechanical properties of ZrTiAlV alloys. Yield strength of the alloy with 2.2wt% Al is below 200MPa. As Al content increased to 5.6wt%, the yield strength, tensile strength and elongation of the examined alloy are 1088MPa, 1256MPa and 8%, respectively. As Al content further increased to 6.9wt%, a rapid decrease in ductility was observed as soon as the (ZrTi)3Al intermetallic compound precipitated. Results show that the ZrTiAlV alloys with Al contents between 3.3wt% and 5.6wt% have excellent mechanical properties.
Effects of Al content on structure and mechanical properties of hot-rolled ZrTiAlV alloys
Highlights Phase structure is greatly dependent on the Al content. Intermetallic compound will precipitates while Al content is over 6.9wt%. Equiaxed α-phase grains present in the hot-rolled alloy with 6.9wt% Al. Alloys with Al content from 3.3wt% to 5.6wt% have good mechanical properties.
Abstract Zirconium alloys show attractive properties for astronautic applications where the most important factors are anti-irradiation, corrosion resistance, anti-oxidant, very good strength-to-weight ratio. The effects of Al content (2.2–6.9wt%) on structure and mechanical properties of the hot-rolled ZrTiAlV alloy samples were investigated in this study. Each sample of the hot-rolled ZrTiAlV alloys with Al contents from 2.2wt% to 5.6wt% is composed of the α phase and β phase, meanwhile, the relative content of the α phase increased with the Al content. However, the (ZrTi)3Al intermetallic compound was observed as the Al content increased to 6.9wt%. Changes of phase compositions and structure with Al content distinctly affected mechanical properties of ZrTiAlV alloys. Yield strength of the alloy with 2.2wt% Al is below 200MPa. As Al content increased to 5.6wt%, the yield strength, tensile strength and elongation of the examined alloy are 1088MPa, 1256MPa and 8%, respectively. As Al content further increased to 6.9wt%, a rapid decrease in ductility was observed as soon as the (ZrTi)3Al intermetallic compound precipitated. Results show that the ZrTiAlV alloys with Al contents between 3.3wt% and 5.6wt% have excellent mechanical properties.
Effects of Al content on structure and mechanical properties of hot-rolled ZrTiAlV alloys
Liang, S.X. (author) / Yin, L.X. (author) / Che, H.W. (author) / Jing, R. (author) / Zhou, Y.K. (author) / Ma, M.Z. (author) / Liu, R.P. (author)
2013-05-21
5 pages
Article (Journal)
Electronic Resource
English
Effects of Al content on structure and mechanical properties of hot-rolled ZrTiAlV alloys
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Effects of Al content on structure and mechanical properties of hot-rolled ZrTiAlV alloys
| British Library Online Contents | 2013