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Meeting MS&T23: Materials Science & Technology
Symposium Late News Poster Session
Presentation Title N-11: Microstructure Evolution of Al-Cu-Li Alloy during Electrically-assisted Thermomechanical Treatment
Author(s) Zhenhai Xu, Shaoxi Xue
On-Site Speaker (Planned) Zhenhai Xu
Abstract Scope An improved thermomechanical treatment (RI-ITMT) containing electrically-assisted recrystallization annealing (EARA) was proposed for manufacturing fine-grained Al-Cu-Li alloy, based on overageing, cold asymmetric rolling and EARA. And the corresponding microstructure evolution and mechanical properties were investigated. The coarse precipitates introduced by overageing changed the deformed microstructure, produced particle affected zones and weakened the shear band, compared with that with no precipitates. The combined action of electric current and coarse precipitates completed the recrystallization within 5 s and the solution process within 180 s, refined the grain size, and improved the strength and ductility. The athermal effect of electric current not only decreased the activation energy increasing the nucleation rate during Discontinuous static recrystallization (dSRX), but also accelerated the diffusion of atom and vacancy promoting recrystallization and the solution treatment. This proposed RI-ITMT containing EARA possesses the synergetic capacity of optimizing microstructure and improving strength and ductility for Al-Cu-Li alloy.


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A-17: In Situ Residual Stress Measurements for 9Cr1Mo (Gr 91) Stainless Steel Using Ultrasound
A-18: Microstructure and Mechanical Properties of STS316L and P21 Tool Steel Laser Laminated Functionally Graded Materials
A-19: Modifying the Energy Density Formula: Uncovering Fundamental L-PBF Material Differences
A-20: Thermally Dynamic Ripening Induced Multi-modal Precipitation Strengthened NiTi Shape Memory Alloys by LENS
A-21: Towards Metal Additive Manufacturing Using Alternate Powders
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B-4: The Effects of Physical Constraints on Deep-learning Based Surrogate Models
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D-22: Oxygen Exchange-mediated Behaviors in Ferrite Perovskite Oxides: Crystallization and a Photo-ionic Effect
D-23: Processing and Properties of Thin Solution-based Sb2Se3 Thin Films for Phase Change Materials
D-24: Structural Rearrangements during Relaxation of Lithium Disilicate Glass
D-25: Surface Energy Measurements of Yttrium Oxide
D-26: Synthesis of Spinel-type High-entropy Oxides for the Development of Light-element-containing Multication Magnetic Materials
F-14: Calculation of Stress Intensity Factors for a Multiple Crack-hole Interaction Problem
F-15: Capacitive Discharge in Flash Experiments under Air and Ar Atmosphere
F-16: Deformation and Fracture Response of Single-crystal MAX Phases
F-17: Existence of Single Crystal Structure in Congruent Melting Intermetallic Compound – Ni5Ge3
F-18: Novel Techniques in X-ray Nanotomography and High Resolution FESEM Imaging: Linking Structure and Properties of Heterogeneous and Automotive Catalysts in 2D and 3D
G-12: Characteristic Deformation Behavior of Heterogeneous-Nano structured SUS316LN Autenitic Stainless Steel at a Cryogenic Temperature
G-13: Development and Characterization of a Cast Steel Reinforced with Primary Carbides for High Strength and Severe Wear Applications
J-10: Assessing Wear Rate Based on Cutting Power Measurement
K-6: Microstructure Based Modeling Approach for the Fatigue Life Prediction of Hypo-eutectoid Steels
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L-14: Manufacturing and Characterization of Ferromagnetic Nano-clusters in Si by One-step Diffusion for Microfluidic Based CTC Separation System
L-15: Regulating Na+ and K+ Ion Storage into TMD Alloys: Effect of Upper Voltage Cut-off Technique
L-9: Atomic Layer Deposition of MoOx Thin Films Using Mo(iPrCp)2H2 and O3
N-10: Effect of Laser Welding on Corrosion and Microstructure in Underwater Environment
N-11: Microstructure Evolution of Al-Cu-Li Alloy during Electrically-assisted Thermomechanical Treatment
N-12: Powder Metallurgy of Electrical Contacts
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