Microstructures and properties of melt-spun and as-cast Mg-20Gd binary alloy
Data(s) |
2006
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Resumo |
Mg-20Gd(%, mass fraction) samples were prepared using melt-spinning and copper mold casting techniques. Microstructures and properties of the Mg-20Gd were investigated. Results show that the melt-spun ribbon is mainly composed of supersaturated alpha-Mg solid solution phase and the as-east ingot mainly contains alpha-Mg solid solution and Mg5Gd phase. The differential scanning calorimeter (DSC) curve of the ribbon exhibits a small exothermic peak in the temperature range from 630 to 680 K, which indicates that the ribbon contains a metastable phase (amorphous). Tensile strength at room temperature of the melt-spun ribbon and as-cast specimen are 308 and 254 MPa, respectively. The elongations of the two samples are less than 2%. The fracture surfaces demonstrate that the fracture mode of the as-cast Mg-20Gd is a typical cleavage fracture and that of the melt-spun sample is a combination of brittle fracture and ductile fracture. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Peng QM;Wu YM;Fang DQ;Meng J;Wang LM .Microstructures and properties of melt-spun and as-cast Mg-20Gd binary alloy,JOURNAL OF RARE EARTHS,2006,24(4):466-470 |
Palavras-Chave | #MG-GD ALLOYS #MECHANICAL-PROPERTIES #MAGNESIUM |
Tipo |
期刊论文 |