Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Effect of Post Heat Treatment on Bonding Interfaces in Ti/STS409L/Ti Cold Rolled Clad Materials

Ti/STS409L/Ti 냉연 클래드재의 접합계면특성에 미치는 후열처리의 영향

  • Received : 2010.12.10
  • Accepted : 2011.01.18
  • Published : 2011.04.01
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Abstract

The aim of the present study is to derive optimized post heat treatment temperatures to get a proper formability for Ti/STS409L/Ti clad materials. These clad materials were fabricated by cold rolling followed by a post heat treatment process for 10 minutes at temperatures ranging from $500^{\circ}C$ to $850^{\circ}C$. The microstructure of the interface was observed using a Scanning Electron Microscope(SEM) and an Energy Dispersive X-ray Analyser(EDX) in order to investigate the effects of post heat treatment on the bonding properties of the Ti/STS409L/Ti clad materials. Diffusion bonding was observed at the interfaces with a diffusion layer thickness increasing with the post heat treatment temperature. The diffusion layer was composed of a type of(${\varepsilon}+{\zeta}$) intermetallic compound containing additional elements, namely, Fe, Ti and Ni. The micro Knoop hardness of the Ti/STS409L interfaces was found to increase with heat treatment up to $800^{\circ}C$ and then decrease for temperatures rising up to $850^{\circ}C$. The tensile strength was shown to decrease for heat treatment temperature increasing to $750^{\circ}C$ and then increase rapidly for temperature rising up to $850^{\circ}C$. A post heat treatment temperature range of $700{\sim}750^{\circ}C$ was found to optimize the formability of Ti/STS409L/Ti clad materials.

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References

  1. T. Fukuda, T, Fukami, Y. Baba, K. Honma, 1994, Clad steel for seawater service, Desalination, Vol. 97, pp. 121-129. https://doi.org/10.1016/0011-9164(94)00080-8
  2. S. H. Choi, K. H. Kim, K. H. Oh, D. N. Lee,1997, Tensile deformation behavior of stainless steel clad aluminum bilayer sheet, Mater. Sci. and Eng. A, Vol. 222, pp. 158-165. https://doi.org/10.1016/S0921-5093(96)10514-1
  3. T. Mori, S. Kurimoto, 1998, Deformation characteristics of aluminum-clad stainless steel sheet under uniaxial tension, Trans. ASME, Vol. 120, pp. 179-184. https://doi.org/10.1115/1.2834406
  4. N. Kahraman, B. Gulenc, F. Findik, 2005, Joining of titanium/stainless steel by explosive welding and effect on interface, J. Mater. Process. Tech., Vol. 169, pp. 127-133. https://doi.org/10.1016/j.jmatprotec.2005.06.045
  5. K. Y. Rhee, W. Y. Han, H. J. Park, S. S. Kim, 2004, Fablication of aluminium/ copper clad composite using hot hydrostatic extrusion process and its material characteristics, Mater. Sci. Eng., A, Vol. 384, pp. 70-76. https://doi.org/10.1016/j.msea.2004.05.051
  6. K. Raghukandan, 2003, Analysis of the explosive cladding of cu-low carbon steel plates, J. Mater. Proc. Tech., Vol. 139, pp. 573-577. https://doi.org/10.1016/S0924-0136(03)00539-9
  7. D. S. Bae, S. K. Kim, S. P. Lee, T. Shibayama, D. H. Bae, 2007, Interface Properties of Copper/Aluminum/Stainless Steel Clad Materials, Key Eng. Mater., Vol. 345-346, pp. 1497-1500. https://doi.org/10.4028/www.scientific.net/KEM.345-346.1497
  8. S. S. Park, D. S. Bae, J. H. Lee, D. H. Bae, 2007, Development of new bimetal material for home appliances by using the rolling process, Trans. Mater. Proces., Vol. 16, pp. 375-380. https://doi.org/10.5228/KSPP.2007.16.5.375
  9. H. S. Lee, J. H. Yoon, Y. M. Yi, 2007, Oxidation behavior of titanium alloy under diffusion bonding, Thermochimica Acta, Vol. 455, pp. 105-108. https://doi.org/10.1016/j.tca.2006.12.004
  10. D. H. Bae, S. J. Jung, Y. R. Cho, W. S. Jung, H. S. Jung, C. Y. Kang, D. S. Bae, 2009, Effect of Pre-Heat Treatment on Bonding Properties in Ti/Al/STS Clad Materials, J. Kor. Ins. Met. & Mater., Vol. 47, pp. 573-579.
  11. H. Okamoto, 2000, Desk Handbook, Phase Diagrams for Binary Alloys, ASM International, Ohio, USA, p. 29.