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Article Navigation >  International Journal of Minerals, Metallurgy and Materials  > 2020 > Accepted Manuscript

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Research Article

Bonding of compound casted Ti/Al bimetal by heat treatment

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  • Received: 20 December 2019; Revised: 22 May 2020; Accepted: 25 May 2020; Available online: 27 May 2020
  • The mechanism of the formation of bonding between compound cast Al/Ti bimetal during a heat treatment regime is investigated by casting commercially pure Al melt on a Ti bar in a steel tube and heat treating the compound cast Ti/Al bimetal for different periods of time, after the Al melt was solidified. No bonding was observed between the two metals after the initial casting. This was attributed to the presence of oxide films on the liquid Al and solid Ti alloys and the trapped atmosphere between them. The effect of these layers in preventing the formation of bonding was eliminated after heat treating the cast part at 973 K (700 oC) for at least 15 min and the metals started to bond with each other. A detailed mechanism for this bonding is presented in this paper.
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    [2] Ali Shabani, Mohammad Reza Toroghinejad, and  Alireza Bagheri, Effects of intermediate Ni layer on mechanical properties of Al–Cu layered composites fabricated through cold roll bonding, Int. J. Miner. Metall. Mater., https://doi.org/10.1007/s12613-018-1604-9
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    [6] Jian-long Guo, Yan-ping Bao, and  Min Wang, Cleanliness of Ti-bearing Al-killed ultra-low-carbon steel during different heating processes, Int. J. Miner. Metall. Mater., https://doi.org/10.1007/s12613-017-1529-8
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    [9] Li Zhang, Bao-lin Wu, and  Yu-lin Liu, Microstructure and mechanical properties of a hot-extruded Al-based composite reinforced with core-shell-structured Ti/Al3Ti, Int. J. Miner. Metall. Mater., https://doi.org/10.1007/s12613-017-1536-9
    [10] Mohammadreza Khanzadeh Gharah Shiran, Gholamreza Khalaj, Hesam Pouraliakbar, Mohamma dreza Jandaghi, Hamid Bakhtiari, and  Masoud Shirazi, Effects of heat treatment on the intermetallic compounds and mechanical properties of the stainless steel 321-aluminum 1230 explosive-welding interface, Int. J. Miner. Metall. Mater., https://doi.org/10.1007/s12613-017-1519-x
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Bonding of compound casted Ti/Al bimetal by heat treatment

  • Corresponding author:

    Ramin Raiszadeh    E-mail: rraiszadeh@uk.ac.ir; rraiszadeh@yahoo.com

  • Dept. of Metallurgy and Materials Science, School of Engineering, Shahid Bahonar University of Kerman, Kerman, 7616913439, Iran
    Received: 20 December 2019
    Revised: 22 May 2020
    Accepted: 25 May 2020
    Available online: 27 May 2020

Abstract: The mechanism of the formation of bonding between compound cast Al/Ti bimetal during a heat treatment regime is investigated by casting commercially pure Al melt on a Ti bar in a steel tube and heat treating the compound cast Ti/Al bimetal for different periods of time, after the Al melt was solidified. No bonding was observed between the two metals after the initial casting. This was attributed to the presence of oxide films on the liquid Al and solid Ti alloys and the trapped atmosphere between them. The effect of these layers in preventing the formation of bonding was eliminated after heat treating the cast part at 973 K (700 oC) for at least 15 min and the metals started to bond with each other. A detailed mechanism for this bonding is presented in this paper.

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