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Simulation and Heat Treatment Process of Carbon Nanotube Modified Aluminum Alloy (ZL105)

Zhang Zigi, Pan Zhilin, Li Rong, Zeng Qi, Liu Yong, Wu Quan

Archives of Foundry Engineering

2023

Vol. 23, iss. 3

38--50

To further improve the mechanical properties of carbon nanotubes (CNTs) modified aluminum alloy (ZL105), the first principle was used to build the atomic structure of the alloy system and the alloy system was simulated by the VASP. After that, the heat treatment process of the cast aluminium alloy material with CNTs to enhance the alloy performance by the orthogonal experiment. The results of the research show that: (1) The energy status of the alloy system could be changed by adding the C atoms, but it did not affect the formation and structural stability of the alloy system, and the strong bond compounds formed by C atoms with other elements inside the solid solution structure can significantly affect the material properties. (2) The time of solid solution has the greatest influence on the performance of material that was modified by CNTs. The solution temperature and aging temperature were lower strength affection, and the aging time is the lowest affection. This paper provides a new research method of combining the atomic simulation with the casting experiment, which can provide the theoretical calculations to reduce the experiment times for the casting materials’ performance improvement.

Methodological conditionings of a modified low cycle fatigue method of tempered 41Cr4 steel in comparison to some other materials

Maj M., Moćko W., Pietrzak K., Klasik A.

Archives of Foundry Engineering

2009

Vol. 9, iss. 4

129-134

In the research work results of the application of modified LCF method in the assessment of fatigue parameters of various materials were discussed. The new software algorithm was proposed in the determination of fatigue parameters. A comparative verification of the new procedure with bibliographical data confirmed the possibility of the replacement of classical LCF by proposed original MLCF method as especially suitable test in the case of heterogeneous materials microstructure, particularly when it is hard to design Wöhler's diagrams as well as to carry on research according to the classical LCF method.