A. Patarić, M. Mihailović, B. Marković, M. Sokić, A. Radovanović, B. Jordović
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引用次数: 1
Abstract
Microstructure assessment is crucial for the design and production of high-quality alloys such as cast aluminum alloy ingots. Along with the effect of a more homogeneous microstructure to result in much better mechanical properties, better as-cast alloy quality indicates a higher efficiency of the aluminum alloys production process. During the aluminum alloy solidification process many microstructural defects can occur, which deteriorate the mechanical properties and hence decrease the usability of such an ingot. Application of the electromagnetic field during the vertical continuous casting process significantly reduces occurrence of these defects. In the present study, EN AW 7075 alloy samples were cast with and without application of an electromagnetic field and examined regarding the microstructure, electrical conductivity, and changes in the phase composition. The obtained results clearly show that it is possible to decrease or avoid casting defects by the electromagnetic field application as verified by the microstructure characterization and quantification, electrical conductivity tests and differential thermal analysis (DTA).
微观结构评估对于设计和生产高质量合金(如铸铝合金锭)至关重要。除了更均匀的微观结构产生更好的机械性能的效果外,更好的铸态合金质量表明铝合金生产工艺的效率更高。在铝合金凝固过程中,可能会出现许多微观结构缺陷,这会降低机械性能,从而降低这种铸锭的可用性。在垂直连铸过程中应用电磁场显著减少了这些缺陷的发生。在本研究中,EN AW 7075合金样品在施加和不施加电磁场的情况下进行铸造,并检查微观结构、电导率和相组成的变化。通过微观结构表征和定量、电导率测试和差热分析(DTA)验证,所获得的结果清楚地表明,通过施加电磁场可以减少或避免铸造缺陷。
期刊介绍:
The Journal Hemijska industrija (abbreviation Hem. Ind.) is publishing papers in the field of Chemical Engineering (Transport phenomena; Process Modeling, Simulation and Optimization; Thermodynamics; Separation Processes; Reactor Engineering; Electrochemical Engineering; Petrochemical Engineering), Biochemical Engineering (Bioreactors; Protein Engineering; Kinetics of Bioprocesses), Engineering of Materials (Polymers; Metal materials; Non-metal materials; Biomaterials), Environmental Engineeringand Applied Chemistry. The journal is published bimonthly by the Association of Chemical Engineers of Serbia (a member of EFCE - European Federation of Chemical Engineering). In addition to professional articles of importance to industry, scientific research papers are published, not only from our country but from all over the world. It also contains topics such as business news, science and technology news, information on new apparatus and equipment, and articles on environmental protection.