Microstructure and mechanical properties of ZrAl binary alloys

Jiang, Xiaoxiang; Zhang, Yiduan; Li, C.L.; Liang, Guoli; Han, Rihong; Zhang, X.Y.

doi:10.1016/j.jallcom.2019.152068

Cited by 14 publications

(5 citation statements)

References 30 publications

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“…It can be seen from Figure 6 a that the composed of microstructures are the light-colored Zr-Al phase and dark-colored Zr phase, and the distribution is relatively uniform. The morphology of sintered Zr-Al alloy is obviously different from that of melted Zr-Al alloy [ 9 , 21 ]. The XRD result of the workpieces is shown in Figure 7 .…”

Section: Resultsmentioning

confidence: 99%

“…Through an overall consideration, it is suggested that the deformation temperature should be higher than the phase transition temperature of α -Zr to β -Zr (863 °C), but lower than the decomposition temperature of Zr 3 Al (1019 °C). β -Zr and Zr 3 Al both have relatively good plasticity, which is beneficial to improve the uniformity of microstructure and reduce the possibility of defects [ 9 , 10 , 11 ].…”

Section: Resultsmentioning

confidence: 99%

“…Through an overall consideration, it is suggested that the deformation temperature should be higher than the phase transition temperature of α-Zr to β-Zr (863 °C), but lower than the decomposition temperature of Zr3Al (1019 °C). β-Zr and Zr3Al both have relatively good plasticity, which is beneficial to improve the uniformity of microstructure and reduce the possibility of defects [9][10][11]. On the whole, for sintered Zr-6Al-0.1B alloy, the high deformation rate can provide a large recrystallization nuclear force, which is conducive to improving the grain refinement.…”

Section: Microstructure Evolution Of Sintered Zr-6al-01b Alloymentioning

confidence: 99%

“…The studies of Zr-Al compounds have found that the Zr 2 Al phase has high hardness and almost no plasticity at room temperature. Conversely, the Zr 3 Al phase has a face-centered cubic structure, because of the large number of actuated slip systems and good isotropic properties, so it has excellent plasticity, and is more suitable as an ideal matrix phase for structural materials [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

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Microstructure and Thermal Deformation Behavior of Hot-Pressing Sintered Zr-6Al-0.1B Alloy

et al. 2022

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Zr-6Al-0.1B alloy rich in Zr3Al phase is prepared by hot-pressing sintering. The thermal deformation behavior of sintered Zr-6Al-0.1B is analyzed by isothermal compression tests at deformation temperatures of 950, 1050, and 1150 °C with strain rates of 0.01, 0.1, and 1 s−1. The results indicate that at the early stage of thermal deformation, the stress increases rapidly with the increase of strain and then reaches the peak value. Subsequently, the stress decreases with the increase of strain under the softening effect. On the whole, the true stress-strain curve shifts to the high stress area with the increase of strain rate or the decrease of deformation temperature, so the sintered Zr-6Al-0.1B alloy belongs to the temperature and strain rate sensitive material. For the microstructure evolution of sintered Zr-6Al-0.1B during the isothermal compression, the high strain rate can improve the grain refinement. However, because sintered Zr-6Al-0.1B is a low plastic material, too high strain rate will exceed the deformation capacity of the material, resulting in an increase in defects. The increase of deformation temperature also contributes to grain refinement, but when the temperature is too high, due to the decomposition of Zr3Al phase, the deformation coordination of the material decreases, leading to the increase of the probability of the occurrence of defects. This study verified the feasibility of hot-pressing sintering to prepare Zr-6Al-0.1B alloy rich in Zr3Al phase and laid the foundation of “hot-pressing sintering + canning hot-extrusion” process of Zr-6Al-0.1B alloy components.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…Through an overall consideration, it is suggested that the deformation temperature should be higher than the phase transition temperature of α-Zr to β-Zr (863 °C), but lower than the decomposition temperature of Zr3Al (1019 °C). β-Zr and Zr3Al both have relatively good plasticity, which is beneficial to improve the uniformity of microstructure and reduce the possibility of defects [9][10][11]. On the whole, for sintered Zr-6Al-0.1B alloy, the high deformation rate can provide a large recrystallization nuclear force, which is conducive to improving the grain refinement.…”

Section: Microstructure Evolution Of Sintered Zr-6al-01b Alloymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microstructure and Thermal Deformation Behavior of Hot-Pressing Sintered Zr-6Al-0.1B Alloy

et al. 2022

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“…По данным ряда авторов, в сплавах системы Al -Zr выявлены 6 видов наночастиц промежуточных фаз, таких как Zr 3 Al [38,39], Zr 2 Al [40], Zr 5 Al 3 [41], Zr 3 Al 2 [42], Zr 4 Al 3 [43] и ZrAl [44][45][46]. Дополнительное легирование иттрием приводит к ускорению кинетики выделения дисперсоидов фазы Al 3 Zr и формированию частиц фазы Al 3 (Zr, Y) размерами 50-80 нм [38].…”

Section: сплавы системы Al -Zrunclassified