Ultrafine spherulite Mg alloy with high yield strength
| Autor: | Masafumi Matsushita, Ryohei Waki, Michiaki Yamasaki, Kohtaro Masuda, Yuji Higo, Yoshihito Kawamura, Hiroaki Ohfuji |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Hexagonal crystal system Mechanical Engineering Alloy Metals and Alloys 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Microstructure 01 natural sciences 0104 chemical sciences Mechanics of Materials Lattice (order) Materials Chemistry engineering Compression test Composite material 0210 nano-technology |
| Zdroj: | Journal of Alloys and Compounds. 784:1284-1289 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2019.01.080 |
| Popis: | Under high-temperature and high-pressure conditions, the long-period stacking-ordered structure in Mg85Y9Zn6 transforms to a dual-phase structure consisting of a hexagonal close-packed lattice and a face-centered cubic lattice. After further solidification at high-pressure, unique ultrafine microstructures are formed. The alloy recovered after subjected at 10 GPa and 973 K exhibited a fine lamella structure, and a 0.2% proof stress (σ0.2) of 480 MPa obtained by the compression test. Further the alloy recovered after subjected at 10 GPa and 1273 K, a unique spherulite structure were formed, and its σ0.2 improved to 780 MPa. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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