A5046201758- Aluminum Alloy Microstructure Properties
- Microstructure and mechanical properties
- Metal Forming Simulation Techniques
- Metallurgy and Material Forming
- Aluminum Alloys Composites Properties
- Advanced Welding Techniques Analysis
- Bauxite Residue and Utilization
- Titanium Alloys Microstructure and Properties
- Metal and Thin Film Mechanics
- Shape Memory Alloy Transformations
University of British Columbia
2019-2023
University of Tehran
2013-2014
A new design of billet, based on a core–sheath configuration, was used for the processing Ni, Fe, and NiTi alloy by equal‐channel angular pressing (ECAP) at room temperature. This configuration involves inserting metal cores within Fe sheaths prior to it is designed especially use with hard‐to‐deform materials. Billets were processed through one or two ECAP passes temperature microhardness values recorded across transverse directions evaluate flow process. As in conventional ECAP, hardness...
The NiTi alloys are generally considered hard‐to‐deform materials when processing by equal‐channel angular pressing (ECAP) at room temperature. Nevertheless, it is shown experiment that a alloy may be successfully processed ECAP for up to two passes using core–sheath configuration. Three‐dimensional finite element simulations were used more fully evaluate the flow behavior after first and second pass of ECAP. values microhardness recorded across transverse directions within cores results...
A composite containing A356 Al alloy as matrix and ZrB 2 particles was made in an induction furnace by mixing Al-15Zr Al-8B master alloys with Zr:B weight ratio of 9:2. The microstructures tensile properties the extruded were studied scanning electron microscopy (SEM) x-ray diffraction (XRD) analysis before after T6 heat treatment. XRD results showed presence phase microstructure. Tensile test increase ultimate strength (UTS) elongation values comparison alloy. Further investigation UTS, but...
Improvements in the fracture performance of Al-Mg-Si extrusions are required to meet demands automotive market. The mode and associated ductility result from competition between transgranular intergranular paths where intersection slip bands grain boundaries plays a significant role. In this study, distribution plastic strain within grains for microstructures with different spacings Mn dispersoids was quantified using high resolution digital image correlation. It observed that organized into...
Precipitate free zones (PFZ) near grain boundaries are known to have important effects on the fracture of aluminum alloys. It has been shown qualitatively that deformation localized in PFZ leads acceleration damage initiation, growth and coalescence this region, i.e. intergranular fracture. The objective current study was quantify strain localization using a combination digital image correlation (DIC) crystal plasticity simulations for an Al-Mg-Si-Mn alloy. Two different cooling paths after...