Grain refinement of Mg-Al alloys by carbon inoculation
Publikation: Beiträge in Sammelwerken › Aufsätze in Konferenzbänden › Forschung › begutachtet
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Magnesium Technology 2010 - Held During TMS 2010 Annual Meeting and Exhibition. Hrsg. / Sean R. Agnew; Neale R. Neelameggham; Eric A. Nyberg; Wim H. Sillekens. John Wiley & Sons Inc., 2010. S. 419-424 (Magnesium Technology).
Publikation: Beiträge in Sammelwerken › Aufsätze in Konferenzbänden › Forschung › begutachtet
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TY - CHAP
T1 - Grain refinement of Mg-Al alloys by carbon inoculation
AU - Huang, Yuanding
AU - Zheng, Xiuhua
AU - Liu, Bin
AU - Anopuo, Okechukwu
AU - Hort, Norbert
AU - Kainer, Karl Ulrich
AU - Kim, Gyu Seok
PY - 2010
Y1 - 2010
N2 - Grain refinement of magnesium alloys not only reduces the hot tearing and improves their mechanical properties, but also weakens the lexture and improves their isotropic properties. In aluminium-free magnesium alloys, the element Zr is an effective nucleants to refine the microstructure and its mechanism of grain refinement is clear. In Al-containing magnesium alloys, the grain refinement by carbon inoculation was considered to be the best approach until now. However, the mechanism of grain refinement is still unclear. After inoculated by carbon or SiC particles, the grain size of as-cast Mg-Al alloys reduces largely. Different from the previous results, a ternary carbide Al 2MgC2, which has a closer crystal structure to magnesium than A14C3, was observed in Mg-Al alloys after inoculated by carbon or SiC particles. The mechanism of grain refinement by SiC inoculations is the same as that by carbon inoculation. The grain refinement is mainly attributed to the enhanced nucleation of alpha-Mg on the surface of the ternary compound Al2MgC2.
AB - Grain refinement of magnesium alloys not only reduces the hot tearing and improves their mechanical properties, but also weakens the lexture and improves their isotropic properties. In aluminium-free magnesium alloys, the element Zr is an effective nucleants to refine the microstructure and its mechanism of grain refinement is clear. In Al-containing magnesium alloys, the grain refinement by carbon inoculation was considered to be the best approach until now. However, the mechanism of grain refinement is still unclear. After inoculated by carbon or SiC particles, the grain size of as-cast Mg-Al alloys reduces largely. Different from the previous results, a ternary carbide Al 2MgC2, which has a closer crystal structure to magnesium than A14C3, was observed in Mg-Al alloys after inoculated by carbon or SiC particles. The mechanism of grain refinement by SiC inoculations is the same as that by carbon inoculation. The grain refinement is mainly attributed to the enhanced nucleation of alpha-Mg on the surface of the ternary compound Al2MgC2.
KW - Carbon inoculation
KW - Grain refinement
KW - Mg-Al alloy
KW - Nucleant
KW - SiC
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=77952388179&partnerID=8YFLogxK
M3 - Article in conference proceedings
AN - SCOPUS:77952388179
SN - 9780873397469
SN - 0873397460
T3 - Magnesium Technology
SP - 419
EP - 424
BT - Magnesium Technology 2010 - Held During TMS 2010 Annual Meeting and Exhibition
A2 - Agnew, Sean R.
A2 - Neelameggham, Neale R.
A2 - Nyberg, Eric A.
A2 - Sillekens, Wim H.
PB - John Wiley & Sons Inc.
T2 - Magnesium Technology 2010 - TMS 2010 Annual Meeting and Exhibition
Y2 - 14 February 2010 through 18 February 2010
ER -