2022 Technical Division Student Poster Contest: EPD 2022 Technical Division Graduate Student Poster Contest
Program Organizers: TMS Administration
Monday 5:30 PM
February 28, 2022
Room: Exhibit Hall C
Location: Anaheim Convention Center
SPG-1: Challenges for Molten Oxide Electrolysis in Reduced Gravity: Matthew Humbert1; Akbar Rhamdhani1; Geoff Brooks1; Chad Hargrave1; 1Swinburne University of Technology
Molten Oxide Electrolysis (MOE) is a leading contender for processing extra-terrestrial minerals because it produces oxygen and liquid metal without the use of consumables. During electrolysis a gravitational field stratifies gas, electrolyte, and metal from each other by density. Processing on the moon, with ~1/6g, or Mars, with ~1/3g, will reduces the buoyancy force slowing bubble velocity and convection intensity. Low thermal conductivity, (~1W/m⋅K) and high viscosity, (~1Pa⋅s) of molten regolith contribute to thermal and chemical transport being dominated by convection, even as convection velocity decreases. By combining heat and mass transfer with temperature and composition dependent material properties we show Rayleigh-Bérnard type convection cells that may reduce Faradaic efficiency, induce “anode effect”, or freeze the system. We explore these system dynamics in Earth’s (1g), Mars’ (1/3g), and the Moon’s (1/6g) gravity fields concluding that the convective velocity and thus the thermal and mass diffusivity are proportional to gravitational acceleration.
SPG-2: Decopperization Study for Steel Recycling: Hyunsoo Jin1; Brajendra Mishra1; 1Worcester Polytechnic Institute
In recycled steel, copper-induced surface distortion and defects cause loss in ductility. Therefore, the usage of recycled steel is inversely proportional to the increase in copper content of waste steel scrap. Several lab-scale trials have been conducted to expand the field. However, the dilution method is the most efficient way these days where copper-bearing steel scrap is mixed with purer sources of iron. In the future, more electric vehicles and appliances will increase the copper contents in the waste. Thus, dilution has limitations in the future.In this study, the pyrometallurgy methods are conducted to check the feasibility to substitute dilution method. To be specific, the aluminum bath extracting method and the sulfide slagging method are selected because both can get sellable byproducts. The experiment have been carried out at ambient pressure condition and at low temperature (under 1000°C) to focus on the economical side of adopting these methods.
SPG-3: Influence of Graphene Nano Sheets on Friction and Wear Behaviour of Aluminum A380 Nanocomposite Produced by Powder Metallurgy: Hanieh Sajjadpour1; Mohammad Alipour1; 1Tabriz University
The study reports development of graphene nanoplatelets reinforced aluminium A380 matrix nanocomposites using a powder metallurgy and were fabricated by Spark Plasma Sintering Furnace (SPS) technique in vacuum at 540 °C. 0.25, 0.5, 0.75 and 1% wt-% of graphene nanoplatelets are used for the synthesis of nanocomposites. Testing and analysis of fabricated composites revealed improved metallurgy, mechanical properties and wear behaviour. Grain refinement action caused by graphene, high hardness and graphene's self-lubricating nature is reasoned for these improvements. The microstructures are analysed through a scanning electron microscope. The wear resistance of resultant composites is reported at a higher side, decreasing friction coefficient owing to graphene's self-lubricating nature. Moreover, incorporation of lubricant grapheme nano sheets significantly reduced the wear rate and the friction coefficient in comparison with the AlA380 matrix composites.
SPG-4: Investigating of the Microstructure and Mechanical Properties of Al- A380 Nanocomposite Reinforced with SiC Nanoparticles Produced by Powder Metallurgy: Ali Mohammadi1; Mohammad Alipour1; 1Tabriz University
In the present investigation, an Al-A380 metal matrix nanocomposite reinforced with sic nanoparticles (0, 0.25, 0.5, 1 and 1.5 wt.%) was fabricated by powder metallurgy. Microstructural evaluation and mechanical properties of specimens were studied by Field Emission-Scanning Electron Microscopy, X-ray Diffraction and hardness. Several factors that affect uniform distribution of reinforcing nanoparticles were investigated. After ball milling and sintering, a nanocomposite with a uniform distribution of nanoparticles was produced. It was shown that the hardness of the nanocomposite enhanced with the increasing amount of sic nanoparticles up to 0.5% wt.%. Results showed a considerable change in morphology after adding sic nanoparticles leading to an improvement in strength of the nanocomposite. The AlA380%-0.5 wt.% sic nanocomposite sample represents the optimum properties and microstructure in samples.
SPG-5: Investigating of the Wear Behavior of Al- A380 Nanocomposite Reinforced with SiC Nanoparticles Produced by Powder Metallurgy: Ali Mohammadi1; Mohammad Alipour1; 1Tabriz University
The study reports development of sic nanoparticles reinforced aluminum A380 matrix nanocomposites using a powder metallurgy and were fabricated by hot-pressing technique in vacuum at 510 °C. 0.25, 0.5, 1 and 1.5 wt-% of sic nanoparticles are used for the synthesis of nanocomposites. Testing and analysis of fabricated composites revealed improved metallurgy, mechanical properties and wear behavior. Grain refinement action caused by sic nanoparticles, high hardness and high wear resistance is reasoned for these improvements. The microstructures are analyzed through a scanning electron microscope and x-ray diffraction. The wear resistance of resultant composites is reported at a higher side, decreasing friction coefficient. Moreover, incorporation of A380 nanocomposite reinforced with sic nanoparticles significantly reduced the wear rate and the friction coefficient in comparison with the AlA380 matrix composites.
SPG-6: Recycling of CrC-nichrome Coated Stainless Steel by Remelting and Addition of Alloys with Validation from Mathematical Modelling: Akanksha Gupta1; Brajendra Mishra1; 1Worcester Polytechnic Institute
This project aims to develop a recycling process of CrC-Nichrome coated stainless steel composite by remelting and addition of standard grade alloys to produce secondary stainless steel. The secondary steelmaking process is optimized by using a gray-box mathematical model for alloy additions and laboratory-scale experimental studies. The obtained steel is characterized using SEM-EDX analysis for inclusions and microstructure, and XRF for composition.
SPG-7: Sustainable Process Flowsheet for Recovery of Value added Products from Bauxite Residue: Himanshu Tanvar1; Brajendra Mishra1; 1Worcester Polytechnic Institute
The growing stockpiles of bauxite residue and associated environmental hazards require a sophisticated process flowsheet for complete valorization and value recovery. Considering the association of multiple elements (Fe, Al, Si, Ca, Ti, V, Sc) within bauxite residue, metal extraction is of prime interest. The complex association of different elements and physical and chemical characteristics makes the extraction and purification process expensive and challenging. The present study focuses on developing a novel hydrometallurgical flowsheet for subsequent recovery of base metals and critical elements from bauxite residue. The major elements present in bauxite residue are recovered as high purity magnetite, alumina, titania, silica and calcium carbonate. Whereas critical elements (such as V and Sc) are recovered in the liquid stream generated after the recovery of base metals. The proposed process is environmentally sound with near-zero waste discharge and presents an excellent opportunity to utilize bauxite residue as a multi-element resource.
SPG-8: The Effect of Graphene Nano Sheets on Microstructure and Mechanical Properties of Aluminum A380 Nanocomposite Produced by Powder Metallurgy: Hanieh Sajjadpour1; Mohammad Alipour1; 1Tabriz University
In the present study, AlA380-based nanocomposites reinforced with graphene nano sheets (0.25, 0.5, 0.75 and 1% volumetric) were fabricated using the Spark Plasma Sintering Furnace (SPS) technique in vacuum at 540 °C. Microstructural and mechanical properties of the AlA380-GNPs nanocomposites were investigated as a function of the GNPs reinforcement percentage. It was found that adding 0.75% GNPs increased the hardness of the SPS samples from 50 HV for AlA380 matrix to almost 70 HV for AlA380%-0.75% GNPs nanocomposite. OM and SEM analysis were used to investigate microstructures of the nanoparticle distribution in the nanocomposites of the SPS samples. Results showed a considerable change in morphology after adding GNPs nanoparticles leading to an improvement in strength of the nanocomposite. In the end, the AlA380%-0.75% GNPs nanocomposite sample represents the greatest hardness and good microstructure to compare with the other experimented samples.