Jiwei Geng

ORCID: 0000-0003-2020-1961
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Research Areas
  • Aluminum Alloys Composites Properties
  • Aluminum Alloy Microstructure Properties
  • Microstructure and mechanical properties
  • Advanced ceramic materials synthesis
  • Quasicrystal Structures and Properties
  • Surface Treatment and Residual Stress
  • Advanced materials and composites
  • Metal Alloys Wear and Properties
  • Metallurgy and Material Forming
  • Magnesium Alloys: Properties and Applications
  • Metal Forming Simulation Techniques
  • Advanced Welding Techniques Analysis
  • Electromagnetic Effects on Materials
  • X-ray Diffraction in Crystallography
  • Metallic Glasses and Amorphous Alloys
  • Mineralogy and Gemology Studies
  • Cancer Immunotherapy and Biomarkers
  • High Entropy Alloys Studies
  • Phase-change materials and chalcogenides
  • Ultrasound and Cavitation Phenomena
  • Additive Manufacturing Materials and Processes
  • Ultrasound and Hyperthermia Applications
  • Advanced machining processes and optimization
  • 3D Printing in Biomedical Research
  • Laser Material Processing Techniques

Shanghai Jiao Tong University
2016-2025

Baoshan College
2023-2025

University of Jinan
2013-2014

South China University of Technology
2013

Aluminum alloys fabricated by spray forming (SF) technology are commonly followed hot-working without heat treatments. A new approach that is a pretreatment before proposed in the present work. The results show microstructural stability of materials processed this improved evidently, which related to pinning effect on dislocations and grain boundaries Al3Zr particles induced during pretreatment. strength SF Al alloy treatment can be enhanced significantly. Owing combined refinement...

10.1016/j.matdes.2021.109618 article EN cc-by-nc-nd Materials & Design 2021-02-26

The effects of TiB2 and Zr on the microstructure, aging response mechanical properties hot-extruded Al–Zn–Mg–Cu based materials were investigated compared by multi-scale microstructure characterization techniques. results showed that proper addition particles could refine grain size during solidification, promote dynamic recrystallization extrusion, inhibit growth solution treatment. Meanwhile, had minor influence refinement but effectively suppress with Zr-free alloy. Furthermore,...

10.1016/s1003-6326(21)65648-0 article EN Transactions of Nonferrous Metals Society of China 2021-08-01

The high temperature (HT) thermal stability and mechanical properties of Al−5%Cu (AC) Al−5%Cu−0.2%Mn−0.2Zr% (ACMZ) alloys from 573 to 673 K were systematically studied. results displayed that micro-alloying additions Zr Mn elements have presented a significant role in stabilizing the main strengthening metastable θ′ precipitates at as K. Simultaneously, HT tensile test demonstrated ACMZ alloy retained their strength (88.6±8.8) MPa, which was much higher than AC ((32.5±0.8) MPa) after...

10.1016/s1003-6326(21)65778-3 article EN Transactions of Nonferrous Metals Society of China 2022-01-01

The effects of combined Ti and Zr addition on microstructures mechanical properties are systematically investigated in Al–Zn–Mg–Cu alloy by microstructure characterizations a physical-based model. results show that can promote the precipitation nano L12 Al3(Ti,Zr) dispersoids, while primary D022 Al3Ti phases formed during solidification when is over 0.2 wt%. As compared to 0Ti alloy, ductility toughness enhanced markedly 0.1–0.2 wt%Ti since volume fraction dispersoids increased. Both...

10.1016/j.jmrt.2022.11.106 article EN cc-by-nc-nd Journal of Materials Research and Technology 2022-11-28
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