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A new investigated method on hot tearing behavior in aluminum alloys

  • Physical Metallurgy and Heat Treatment
  • Published:
Russian Journal of Non-Ferrous Metals Aims and scope Submit manuscript

Abstract

A new investigated method based on the applied forces for assessment on hot tearing behavior in aluminum alloys is introduced in the paper. In this method, molten metal is cast in the rod-shaped mold cavity. One side of the casting specimen is hooked by a steel bolt which restrains its free contraction and transfers the tensile forces during solidification. A steel threaded rod connected to a load cell which records the realtime measurement of the tensile forces during every experiment. Thermal history is monitored by k-type thermocouple. The data of the temperature and tensile forces are acquired by a data acquisition system. Through the use of this method, it is possible to estimate the initiation of hot tearing, its propagation and cracking during solidification. It is also obtained the critical tensile stress for hot tearing initiated and fractured. Experiment is conducted with A356 alloys to investigate the accuracy of the apparatus and modify its operating parameter. Accordingly, the tensile forces curves, the temperature curves and the microstructure of the test specimen are obtained. This data provide useful information about hot tearing formation and solidification characteristics, from which their quantitative relations are derived. In this manner, the hot tearing behavior in aluminum alloys can be studied.

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Authors and Affiliations

  1. Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China

    Rongfu Xu, Hongliang Zheng, Fengxiang Guo & Xuelei Tian

  2. Jinan Foundry and Metalforming Machinery Research Institute Co., Ltd., Jinan, 250022, China

    Supei Ding

Authors
  1. Rongfu Xu
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  2. Hongliang Zheng
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  3. Fengxiang Guo
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  4. Supei Ding
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  5. Xuelei Tian
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Corresponding author

Correspondence to Xuelei Tian.

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The article is published in the original.

Male, born in 1963, Ph.D, Professor.

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Xu, R., Zheng, H., Guo, F. et al. A new investigated method on hot tearing behavior in aluminum alloys. Russ. J. Non-ferrous Metals 54, 377–382 (2013). https://doi.org/10.3103/S106782121305009X

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  • DOI: https://doi.org/10.3103/S106782121305009X

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