Saheed Adisa
- Name
- Saheed Adisa
- Institution
- University of Idaho
- Position
- Graduate Student
- Affiliation
- American Nuclear Society
- h-Index
- ORCID
- 0000-0002-0310-0168
| "APT characterization and modeling of irradiation-induced Nb-rich nanoclustering in Zr-1.0%Nb alloys" Matthew Swenson, Saheed Adisa, Materialia Vol. 16 2019 Link | ||
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"Comparison of microstructure evolution in Fe2+ or neutron-irradiated T91 at 500 C"
Matthew Swenson, Saheed Adisa, Ryan Blair,
Materialia
Vol. 12
2020
100770
Link
The objective of this study is to evaluate dose rate effects on microstructure evolution in ferritic-martensitic alloy T91 following neutron or Fe2+ irradiation to a common dose (3 dpa) and temperature (500 °C). Characterization via TEM and APT is also conducted following Fe2+ irradiation to 100 dpa at 500 °C. Dislocation loop morphologies are consistent following each irradiation to 3 dpa, with only minor growth observed at 100 dpa. Each irradiation exhibits favorability for a<100> loops over a/2<111>. Si-Mn-Ni-rich and Cu-rich nanoclusters are more coarsely distributed following Fe2+ irradiation, while the same solutes exhibit strong evidence of segregation to grain boundaries, dislocation loops, and dislocation lines following both irradiations to 3 dpa. However, after 100 dpa, solutes are likely redistributed. While the invariance theory likely explains dislocation loop evolution with variations in dose rate, it is not sufficient to predict temperature shift requirements for solute cluster evolution at 3 dpa. |
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| "Comparison of microstructure evolution in Fe2+ or neutron-irradiated T91 at 500°C" Ryan Blair , Saheed Adisa, Matthew Swenson, Materialia Vol. 12 2020 Link |
| "Modeling of irradiation-induced precipitates in ferritic-martensitic alloy T91" Matthew Swenson, Saheed Adisa, National Society of Black Engineers Annual Convention March 27-31, (2018) | |
| "Modeling temperature shift for solute clustering in T91 when using variable dose rate irradiations" Matthew Swenson, Saheed Adisa, TMS March 10-14, (2019) | |
| "Study of Niobium clustering in Zr-1.0%Nb alloy irradiated with Kr2+ ions or neutrons to ~9 dpa at 310 °C" Matthew Swenson, Saheed Adisa, Jing Hu, TMS 2020 Annual Meeting February 23-27, (2020) | |
| "Temperature shift evaluation for G-phase clustering in ferritic-martensitic alloys" Matthew Swenson, Saheed Adisa, TMS 2020 Annual Meeting February 23-27, (2020) |
| "Comparison of microstructure evolution in Fe2+ or neutron-irradiated T91 at 500°C" R. Blair, M.J. Swenson, S.B. Adisa, [2020] Materialia · DOI: 10.1016/j.mtla.2020.100770 | |
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"Effect of Laser Welding Process Parameters and Filler Metals on the Weldability and the Mechanical Properties of AA7020 Aluminium Alloy"
Irina Loginova, Asmaa Khalil, Alexey Solonin, Saheed B. Adisa,
[2018]
Journal of Manufacturing and Materials Processing
· DOI: 10.3390/jmmp2020033
This research work aims at finding the optimum process parameters for the laser welding of AA7020 aluminium alloys. The use of 7xxx series alloys is limited because of weldability problems, such as hot cracking, porosity, and softening of the fusion zone despite its higher specific strength-to-weight ratio. AA7020 aluminium alloy was welded while varying the process parameters so as to obtain optimal welding efficiency. The welded samples were analysed to reveal the microstructure, defects, and mechanical properties of the welded zone. The samples were prepared from a plate of AA7020, which was hot rolled at a temperature of 470 °С to a thickness of 1 mm. The welding was carried out at an overlap of 0.25 mm, duration of 14 ms and argon shield gas flow rate of 15 L/min. Process parameters, such as peak power, welding speed, and pulse shaping, were varied. The samples were welded with Al-5Ti-B and Al-5Mg as filler metals. The welding speed, peak power, and pulse shaping have a great influence on the weldability and hot cracking susceptibility of the aluminium alloy. Al-5Ti-B improves the microstructure and ultimate tensile strength of AA7020 aluminium alloy. |
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| Source: ORCID/CrossRef using DOI | |
About Us
The Nuclear Science User Facilities (NSUF) is the U.S. Department of Energy Office of Nuclear Energy's only designated nuclear energy user facility. Through peer-reviewed proposal processes, the NSUF provides researchers access to neutron, ion, and gamma irradiations, post-irradiation examination and beamline capabilities at Idaho National Laboratory and a diverse mix of university, national laboratory and industry partner institutions.
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