With the purpose of studying the influence of Nd on the alloy structure and castability of ZM6, under the fixed content of Zn and Zr, this paper observes and analyzes the microstructure morphology of ZM6 alloy fractur...With the purpose of studying the influence of Nd on the alloy structure and castability of ZM6, under the fixed content of Zn and Zr, this paper observes and analyzes the microstructure morphology of ZM6 alloy fracture with dif- ferent Nd content by the means of uniaxial tension experiment and scanning electron microscope （SEM） observation. The search results indicate that the structure of ZM6 alloy after added Nd can be refined to some extent, while it has no obvious influence on the grain structure and dimension of as- ast ZM6 alloy. Through increasing the ratio between Nd and Zn, it turns out that Nd and Zn reduces their own solid solu- bility by each other in α-Mg, and meanwhile, they gather toward the grain boundary, which is beneficial to refine the structure of ZM6 alloy ingot and enables the grain dimension of ZM6 alloy to reach the minimum when the Nd content is 2.5 %. On the basis of the minimization of the grain dimen- sion, the tensile property of ZM6 alloy improves with the Nd content. Thus, it provides theoretical guidance and technical support for the improvement of ZM6 alloy structure.展开更多
基金This project was financially supported by the Fundamental Research Funds for the Central Universities （No.DLI 2C B05）, the National Natural Science Foundation of China （Nos.31170517 and 31070500）, the Research Fund for the Doctoral Program of Higher Education of China （No.20112303120001）, and the Natural Science Foundation of Heilongjiang Province of China （No.E201128）.
文摘With the purpose of studying the influence of Nd on the alloy structure and castability of ZM6, under the fixed content of Zn and Zr, this paper observes and analyzes the microstructure morphology of ZM6 alloy fracture with dif- ferent Nd content by the means of uniaxial tension experiment and scanning electron microscope （SEM） observation. The search results indicate that the structure of ZM6 alloy after added Nd can be refined to some extent, while it has no obvious influence on the grain structure and dimension of as- ast ZM6 alloy. Through increasing the ratio between Nd and Zn, it turns out that Nd and Zn reduces their own solid solu- bility by each other in α-Mg, and meanwhile, they gather toward the grain boundary, which is beneficial to refine the structure of ZM6 alloy ingot and enables the grain dimension of ZM6 alloy to reach the minimum when the Nd content is 2.5 %. On the basis of the minimization of the grain dimen- sion, the tensile property of ZM6 alloy improves with the Nd content. Thus, it provides theoretical guidance and technical support for the improvement of ZM6 alloy structure.
