Effect of Zn, Cu and Ni addition on microstructure and mechanical properties of as-cast Mg-Dy alloys
| Autor: | Guangli Bi, J. L. Jiang, Yong-gang Zhang, Jian-ji Xu, Ying Ma, Xiao-mei Luo, Yuandong Li, Jie-ming Chen |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
microstructure Alloy Stacking 02 engineering and technology mechanical properties engineering.material lcsh:Technology 01 natural sciences Dendrite (crystal) lcsh:Manufactures 0103 physical sciences Ultimate tensile strength Materials Chemistry Research information 010302 applied physics lcsh:T Metallurgy Metals and Alloys LPSO phase Ni) alloys 021001 nanoscience & nanotechnology Microstructure Volume fraction engineering Elongation 0210 nano-technology Mg-Dy-Zn(Cu lcsh:TS1-2301 |
| Zdroj: | China Foundry, Vol 13, Iss 1, Pp 54-58 (2016) |
| ISSN: | 2365-9459 1672-6421 |
| DOI: | 10.1007/s41230-016-5062-6 |
| Popis: | This paper presents some research information on the effects of Zn, Cu and Ni on the microstructure and mechanical properties of as-cast Mg-2Dy (at.%) alloys. The Mg-2Dy alloy is composed of α-Mg and Mg24Dy5 phases. With the addition of 0.5at.%Zn, 0.5at.%Cu and 0.5at.%Ni, respectively, besides α-Mg, the long period stacking order (LPSO) phases containing Zn, Cu, and Ni precipitated in the α-Mg interdentritic boundary. The addition of Ni effectively refined the dendrite arm spacing. The as-cast Mg-2Dy-0.5Ni alloy exhibited the best tensile strengths and elongation. The better mechanical properties were mainly attributed to small secondry dendrite arm spacing (SDAS) and high volume fraction of LPSO phases. |
| Databáze: | OpenAIRE |
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