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Papers
61,005 resultsShowing papers similar to Residual stress relief mechanisms of 2219 Al–Cu alloy by thermal stress relief method
ClearEffect of Cryogenic Treatment on Residual Stress and Microstructure of 6061 Aluminum Alloy and Optimization of Parameters
This study investigated cryogenic treatment as a method to reduce residual stress in 6061 aluminum alloy after heat treatment. Researchers found that optimized cryogenic parameters could reduce residual stress by 64%, primarily through reduced dislocations and more uniform distribution of precipitate phases in the metal's microstructure.
Effect of Stress Aging on Strength, Toughness and Corrosion Resistance of Al-10Zn-3Mg-3Cu Alloy
Stress aging treatment of a high-strength Al-10Zn-3Mg-3Cu aluminum alloy at applied stresses of 135–450 MPa showed that increasing stress improves alloy strength but decreases corrosion resistance, with 270 MPa providing the optimal balance of strength, toughness, and corrosion resistance for aerospace applications.
The Residual Stress Relief and Deformation Control of Al Alloy Thin-Walled Antenna Components by Ultrasonic Regulation
Researchers used ultrasonic critical refraction wave detection to measure residual stress distributions in aluminum alloy plates and showed that applying ultrasonic stress relief treatment at each machining stage progressively reduces deformation, enabling the production of large thin-walled antenna components with significantly improved flatness.
Research on Residual Stresses and Microstructures of Selective Laser Melted Ti6Al4V Treated by Thermal Vibration Stress Relief
Researchers evaluated thermal-vibration stress relief treatment on titanium alloy parts made by selective laser melting, finding it effectively reduced residual stresses while influencing microstructure — offering a practical method for improving additive manufactured metal components.
A Study of Thermal Stability of Residual Stresses and Fatigue life of Laser Shock Peened Ti-6Al-2Sn-4Zr-2Mo alloy
This aerospace engineering study examined how laser shock peening—a process that introduces compressive stress into metal surfaces—affects the fatigue life and thermal stability of a titanium alloy used in high-temperature aerospace applications. This is a materials engineering study with no relevance to microplastic pollution.
Training high-strength aluminum alloys to withstand fatigue
Researchers engineered aluminum alloy microstructures to use early fatigue stress cycles as a self-healing mechanism, repairing weak points in the material and extending fatigue life by 25 times compared to standard high-strength aluminum alloys. This approach could allow broader use of lightweight aluminum in safety-critical transportation applications.
Microstructural and Mechanical Characterization of Ultra-Pure Aluminum for Low-Amplitude-Vibration Cryogenic Applications
Researchers characterized the mechanical and microstructural properties of three grades of ultra-high-purity aluminum across temperatures from room temperature down to -180°C, finding that microstructural features strongly govern elastic behavior and that these materials are suitable for vibration-damping thermal connections in cryogenic systems.
Surface and Subsurface Residual Stresses after Machining and their Analysis by X-Ray Diffraction
This aerospace/automotive engineering paper reviews methods for analyzing residual stresses in metal surfaces after machining, noting that X-ray diffraction is the most reliable non-destructive verification technique. This is a materials engineering study with no relevance to microplastic pollution.
Fatigue Damage Evaluation of Aviation Aluminum Alloy Based on Strain Monitoring
Researchers developed a metal fatigue damage model for aerospace aluminum alloy using real-time strain monitoring combined with crystal plasticity finite element analysis, establishing a constitutive relationship between strain and damage prior to microcrack initiation. Electron backscatter diffraction analysis validated the model's accuracy in predicting fatigue damage states under various stress conditions.
Improving the Defect Tolerance and Fatigue Strength of AM AlSi10Mg
Heat treatment of additively manufactured AlSi10Mg by stress relief annealing or T6 artificial aging dissolved the cellular silicon-rich network, reducing hardness and tensile strength but improving fatigue strength by reducing residual stresses and significantly improving defect tolerance.
Study on Solidification Process and Residual Stress of SiCp/Al Composites in EDM
A computational model of the heating and solidification process in electrical discharge machining of silicon carbide reinforced aluminum composites was developed to analyze residual stress formation. The model linked process parameters to thermal history and resulting stress distributions in the material. Better understanding of residual stress helps optimize cutting conditions to minimize material damage.
Multiscale hierarchical and heterogeneous mechanical response of additively manufactured novel Al alloy investigated by high-resolution nanoindentation mapping
Researchers used high-resolution nanoscale testing to map the mechanical properties of a new aluminum alloy made by 3D metal printing, revealing how tiny precipitate particles and rapid cooling during printing create regions of dramatically different hardness that affect the alloy's overall strength and performance.