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Materials Composite Engineering Lab
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The lab investigates solidification and crystal growth in metals and semiconductors and applies the findings to materials manufacturing.
AboutAbout the lab
Understanding the principles of crystal growth, solidification, and casting, and applying them to manufacturing
The Materials Composite Engineering Lab studies solidification, the process by which crystalline substances such as metals and semiconductors change from liquid to solid, as well as the mechanisms of crystal growth.
Controlling solidification well produces high-quality materials. The lab therefore deepens the science of crystal growth, solidification, and casting, and aims to develop and apply materials based on it.
Its subjects include silicon crystals for solar cells, lightweight aluminum and magnesium alloys used in parts such as automobile components, steel sheets and cast iron, and objects fabricated with metal 3D printers.
On the lab's website, it is listed as the "Miyahara Lab."
Key terms
- Solidification
- The change of a liquid metal or semiconductor into a solid crystal. The way it solidifies greatly changes the properties of the material.
- Faceted growth
- A mode of crystal growth in which the crystal tends to become flat at the atomic level. It is often seen in the solidification of semiconductors and intermetallic compounds.
- Cast iron
- An iron alloy containing 2% or more carbon. It can be regarded as a composite material in which graphite is dispersed in steel.
- Thermal spraying
- A processing technique for modifying part of a product.
NewsLab news
View More ↗ResearchResearch themes
When solidification, the change from liquid to solid, is controlled well, crystalline substances such as metals and semiconductors are transformed into high-quality materials. The lab deepens the science of crystal growth, solidification, and casting, and aims to develop and apply materials based on it.
*Illustrative imageRapid solidification and metal 3D printing
The lab investigates how the microstructures that appear when metal is rapidly melted and solidified are formed. It works on creating structural and functional materials with metal 3D printers, and on microstructure control by laser melting.
*Illustrative imageHow crystals undergo faceted growth
The lab analyzes the growth mechanisms of crystals that grow in a faceted manner. Its topics include analysis of crystal orientation control in multicrystalline solar cells and analysis of the growth mechanisms of graphite and carbides.
*Illustrative imageMicrostructure control and evaluation of casting materials
The lab adjusts the microstructures of materials used in casting and evaluates their properties. Using computational phase diagrams, it works on alloy design and microstructure control of multicomponent high-alloy cast irons.
*Illustrative imageMicrostructure control of alloy particles for thermal spraying
The lab controls the microstructures of alloy particles used in thermal spraying and evaluates their properties. It studies thermally sprayed microstructures of iron-based, nickel-based, cobalt-based, and aluminum-based alloys.
MembersFaculty
The members of the Materials Composite Engineering Lab are faculty, technical staff, and master's and undergraduate students.As of 2025
- ProfessorHirofumi Miyahara
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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: “Traditional sand-casting process of brass and aluminium for UNISM furniture pieces” Rosebudz92 / CC BY-SA 4.0 (cropped)
- Rapid solidification and metal 3D printing: “Material properties of metal powders for use in additive manufacturing ( )” National Institute of Standards and Technology / Public domain (cropped)
- How crystals undergo faceted growth: “35kg sapphire crystal growth by the Kyropoulos method” LaMèreVeille / CC BY-SA 4.0 (cropped)
- Microstructure control and evaluation of casting materials: “Foundry casting” SMAN ENGINEERS / CC BY-SA 4.0 (cropped)
- Microstructure control of alloy particles for thermal spraying: “SEM photo of 316L Stainless Steel metal powder atomized with ATO Lab Plus ultrasonic metal atomizer” Michaltoczko / CC BY 4.0 (cropped)
- Related lab (凝固工学研究室): “XRISM s X-ray mirror assembly” NASA / Public domain (cropped)
- Related lab (半導体工学研究室): “Voyager Program - RTG upclose” NASA/JPL / Public domain (cropped)
- Related lab (融体物理化学研究室): “Molten Metal Pouring from a Ladle” Mnooralam11 / CC BY 4.0 (cropped)
- Related lab (構造材料工学研究室): “Microstructure of a stainless steel A961” Djhé / CC BY 4.0 (cropped)
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