| Download | - View final version: Joining of dissimilar alloys Ti-6Al-4V and Ti-6Al-2Sn-4Zr-2Mo-0.1Si using linear friction welding (PDF, 14.0 MiB)
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| DOI | Resolve DOI: https://doi.org/10.3390/ma13173664 |
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| Author | Search for: Rajan, Sidharth1ORCID identifier: https://orcid.org/0000-0001-9066-2419; Search for: Wanjara, Priti1ORCID identifier: https://orcid.org/0000-0001-7662-984X; Search for: Gholipour, Javad1; Search for: Kabir, Abu Syed |
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| Affiliation | - National Research Council of Canada. Aerospace
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| Format | Text, Article |
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| Subject | linear friction welding (LFW); solid-state joining; dissimilar alloy joints; post weld heat treatment (PWHT); stress relief annealing (SRA); titanium alloy; Ti-6Al-4V; Ti-6Al-2Sn-4Zr-2Mo-0.1Si; tensile properties; fractography |
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| Abstract | Dissimilar joints between Ti-6Al-4V (Ti-64) and Ti-6Al-2Sn-4Zr-2Mo-0.1Si (Ti-6242) were manufactured using linear friction welding. The weld quality, in terms of the microstructure and mechanical properties, was investigated after stress relief annealing (SRA) at 750 °C for 2 h and compared with the as-welded (AWed) results. The central weld zone (CWZ) microstructure in the AWed condition consisted of recrystallized prior-β grains with α’ martensite, which transformed into an acicular α+β structure after SRA. The hardness in the AWed condition was highest in the CWZ and decreased sharply through the thermomechanically affected zones (TMAZ) to the parent materials (PMs). After SRA, the hardness of the CWZ decreased, mainly due to tempering of the α’ martensite microstructure. Static tensile testing of the dissimilar welds in both the AWed and stress relief annealed (SRAed) conditions resulted in ductile fracture occurring exclusively in the Ti-6Al-4V side of the joint. The promising results on joining of Ti-64 to Ti-6242 provide valuable insight for tailoring performance of next-generation aero-engine products. |
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| Publication date | 2020-08-19 |
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| Publisher | MDPI |
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| Licence | |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 174c102d-fc7c-4838-a3ea-4c189b36ac9a |
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| Record created | 2021-05-05 |
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| Record modified | 2021-05-05 |
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