Study of TLP bonding of Ti-6Al-4V alloy produced by vacuum plasma spray forming and forging
| Autor: | Javad Mostaghimi, Hossein Edris, Hamidreza Salimijazi, Akbar Davoodi Jamaloei |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering Metallurgy Alloy Intermetallic chemistry.chemical_element 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Copper Forging Brittleness chemistry Mechanics of Materials 0103 physical sciences lcsh:TA401-492 Shear strength engineering lcsh:Materials of engineering and construction. Mechanics of materials General Materials Science 0210 nano-technology Thermal spraying |
| Zdroj: | Materials & Design, Vol 121, Iss, Pp 355-366 (2017) |
| ISSN: | 0264-1275 |
| DOI: | 10.1016/j.matdes.2017.02.046 |
| Popis: | Due to the nature of the near-net-shape formed of Ti-6Al-4V alloy produced by vacuum plasma spray forming (VPSF), post-deposition heat treatment is necessary to achieve to the superior mechanical and physical properties. In this study, transient liquid phase (TLP) bonding of VPSF and forging Ti-6Al-4V alloy were investigated. Simultaneous joining process under equi-axed α phase heat treatment cycle was performed to achieve to a suitable microstructure and mechanical properties of both bonding area and parent metal. Different thicknesses of 2, 5, 10, and 25 μm copper interlayer were used and the effect of the interlayer thickness was evaluated. Results showed that the joint region was wider in the TLP bonded VPSF alloy compared to the forged alloy under the same bonding conditions because of the higher diffusion rates in the VPSF alloy. The highest bonding shear strength was achieved for 2 μm interlayer thickness. It was 452 and 492 MPa for the TLP bonded VPSF and forged alloy, respectively. Increasing the interlayer thickness resulted in decreasing the bonding strength and increasing the hardness of the joint area due to the existence of Ti2Cu intermetallic compounds. The fracture analysis showed the brittle behavior due to the existence of the intermetallic compounds. Keywords: Transient liquid phase bonding, Ti-6Al-4V alloy, Vacuum plasma spray forming, Forging, Isothermal solidification, Mechanical properties |
| Databáze: | OpenAIRE |
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