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Sokoluk M, Cao C, Pan S, et al. Nanoparticle-enabled phase control for arc welding of unweldable aluminum alloy 7075. Nat Commun. 2019;10(1):98doi: 10.1038/s41467-018-07989-y.
Sokoluk, M., Cao, C., Pan, S., & Li, X. (2019). Nanoparticle-enabled phase control for arc welding of unweldable aluminum alloy 7075. Nature communications, 10(1), 98. https://doi.org/10.1038/s41467-018-07989-y
Sokoluk, Maximilian, et al. "Nanoparticle-enabled phase control for arc welding of unweldable aluminum alloy 7075." Nature communications vol. 10,1 (2019): 98. doi: https://doi.org/10.1038/s41467-018-07989-y
Sokoluk M, Cao C, Pan S, Li X. Nanoparticle-enabled phase control for arc welding of unweldable aluminum alloy 7075. Nat Commun. 2019 Jan 09;10(1):98. doi: 10.1038/s41467-018-07989-y. PMID: 30626876; PMCID: PMC6327098.
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Nat Commun. 2019 Jan 09;10(1):98. doi: 10.1038/s41467-018-07989-y.

Nanoparticle-enabled phase control for arc welding of unweldable aluminum alloy 7075.

Nature communications

Maximilian Sokoluk, Chezheng Cao, Shuaihang Pan, Xiaochun Li

Affiliations

  1. Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, CA, 90095, USA.
  2. Department of Materials Science and Engineering, University of California, Los Angeles, CA, 90095, USA.
  3. Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, CA, 90095, USA. [email protected].
  4. Department of Materials Science and Engineering, University of California, Los Angeles, CA, 90095, USA. [email protected].

PMID: 30626876 PMCID: PMC6327098 DOI: 10.1038/s41467-018-07989-y

Abstract

Lightweight materials are of paramount importance to reduce energy consumption and emissions in today's society. For materials to qualify for widespread use in lightweight structural assembly, they must be weldable or joinable, which has been a long-standing issue for high strength aluminum alloys, such as 7075 (AA7075) due to their hot crack susceptibility during fusion welding. Here, we show that AA7075 can be safely arc welded without hot cracks by introducing nanoparticle-enabled phase control during welding. Joints welded with an AA7075 filler rod containing TiC nanoparticles not only exhibit fine globular grains and a modified secondary phase, both which intrinsically eliminate the materials hot crack susceptibility, but moreover show exceptional tensile strength in both as-welded and post-weld heat-treated conditions. This rather simple twist to the filler material of a fusion weld could be generally applied to a wide range of hot crack susceptible materials.

References

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  3. Nat Commun. 2017 Jan 18;8:14178 - PubMed
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