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Materials Processing Engineering Lab
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A lab that explores everything from how metals solidify to joining by forging.
AboutAbout the lab
Exploring materials processing, starting from solidification.
The Materials Processing Engineering Lab studies the process by which metals solidify from a liquid, as well as joining technologies that use metal forming such as forging.
Professor Hiroshi Harada lists casting, solidification, electromagnetic force, flow control, and microstructure control as his research keywords.
Assistant Professor Eiji Abe's research topics include the development of joining technologies using metal forming and the mechanisms of fatigue in metallic materials.
Key terms
- Solidification
- The process in which liquid metal cools and becomes solid.
- Continuous casting
- A method in which molten steel is poured into a mold and solidified to produce cast strands continuously without breaks.
- Inclusions
- Non-metallic particles mixed into steel.
- Solid-state bonding
- A method of joining metals by pressing them together in the solid state, without melting them.
ResearchResearch themes
In this lab, Professor Harada works on materials processing starting from solidification, and Assistant Professor Abe works on developing joining technologies using metal forming. Subjects include phenomena that occur in the continuous casting of steel and solid-state bonding of dissimilar metals.
*Illustrative imageMicrostructure Formation During Alloy Solidification
Using experiments in which silver-tin alloys are solidified directionally, the lab investigates lamellar solidification, in which the phase that appears first and the phase that appears later grow alternately. It proposes a mechanism in which solute convection causes this phenomenon.
*Illustrative imageInclusions in Continuous Casting Nozzles
The lab studies how inclusions move inside the nozzle that feeds molten steel in continuous casting. Using a water model in which the wettability between particles and the nozzle wall is varied, it shows through calculations that the adhesion force between hydrophobically treated particles cannot be ignored.
*Illustrative imageCenterline Segregation and Iron Phosphide in Cast Strands
In cast strands of steel with a high phosphorus content, the lab studies how centerline segregation occurs, in which the composition becomes uneven in the center that solidifies last. Using experiments that melt and observe the segregated region together with calculations, it examines the mechanism by which iron phosphide crystallizes.
*Illustrative imageJoining Dissimilar Metals by Forging
The lab researches technology for solid-state bonding of different metals, such as steel and aluminum, by cold forging. It investigates how the way oxide films break and differences in steel grade affect the bonding.
MembersFaculty
- ProfessorHiroshi Harada
- Assistant ProfessorEiji Abe
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “(Employees of Foundry Departmant, working pouring molten metal into molds, US Navy Yard, Mare Island, CA) - NARA - 296870” 作者不詳 / Public domain (cropped)
- Microstructure Formation During Alloy Solidification: “Microstructure of High-Entropy Alloy AlCoCrFeNi₂.₁” OndrejAmbroz / CC BY 4.0 (cropped)
- Inclusions in Continuous Casting Nozzles: “ECSC Financial report 1988 Ensidesa Continuous casting” European Coal and Steel Community / CC BY-SA 4.0 (cropped)
- Centerline Segregation and Iron Phosphide in Cast Strands: “Slabs stack” Borvan53 / CC BY-SA 3.0 (cropped)
- Joining Dissimilar Metals by Forging: “Drop forging Gesenkschmieden” F. Broer / CC BY-SA 3.0 (cropped)
- Related lab (Computational Materials Physics Lab): “Titania supported gold nanocluster” Kronber1 / CC BY-SA 4.0 (cropped)
- Related lab (Synchrotron Radiation Applied Engineering Lab): “02 Fermilab - Fermi National Accelerator Laboratory - American particle accelerator Fermilab near Chicago Illinois” Marek Ślusarczyk (Tupungato) Photo portfolio / CC BY 3.0 (cropped)
- Related lab (Functional Nanomaterials Engineering Lab): “Precious opal (Coober Pedy Opal Field, South Australia)” James St. John / CC BY 2.0 (cropped)
- Related lab (Energy Functional Design Engineering Lab): “Lithium-cobalt-oxide-3D-polyhedra” Ben Mills / Public domain (cropped)
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