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2007年03月01日

【期刊论文】Microstructures and mechanical characteristics of electromagnetic casting and direct-chill casting 2024 aluminum alloys

曹志强, Cao Zhiqiang, Jia Fei, Zhang Xingguo, Hao Hai, Jin Junze

C. Zhiqiang et al. Materials Science and Engineering A 327 (2002) 133-137,-0001,():

-1年11月30日

摘要

Electromagnetic casting (EMC) technology depends on the electromagnetic force to prevent the metal from touching the mold, leaving the ingot surface very smooth. As a result, the surface imperfections, such as oscillation and subsurface segregation etc. caused by a mold of direct-chill casting (DCC), are avoided. Moreover, the electromagnetic stirring makes the structure become more homogeneous over the entire cross-section. In this paper, 2024 aluminum alloys made by EMC and DCC were analyzed by optical microscope and scanning electron microscope, solution heat treatment and artificial aging was given to investigate the mechanical properties such as hardness, wear resistance and fatigue. Results showed EMC ingots had fine and uniform grain structure, which made the EMC ingots have high hardness and good fatigue. The hardness of EMC specimens increased one time than DCC ones and the fatigue was three times as high as DCC ones in as-cast state. The EMC specimens also expressed an excellent characterization in wear resistance; the weight loss was only a half of DCC specimens.

Electromagnetic casting, Microstructure, Hardness, Wear resistance, Fatigue

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2007年01月24日

【期刊论文】电磁铸造铝合金锭的力学性能

曹志强

,-0001,():

-1年11月30日

摘要

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2007年01月24日

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2007年01月24日

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2007年01月24日

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  • 曹志强 邀请

    大连理工大学,辽宁

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