Effects of Mn and Zn solutes on grain refinement of commercial pure magnesium
Research output: Contributions to collected editions/works › Article in conference proceedings › Research › peer-review
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Magnesium Technology 2017. ed. / Neale R. Neelameggham; Alok Singh; Kiran N. Solanki; Dmytro Orlov. Springer International Publishing AG, 2017. p. 191-198 (Minerals, Metals and Materials Series; Vol. Part F8).
Research output: Contributions to collected editions/works › Article in conference proceedings › Research › peer-review
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TY - CHAP
T1 - Effects of Mn and Zn solutes on grain refinement of commercial pure magnesium
AU - Gu, Jian
AU - Huang, Yuanding
AU - Zhang, Mingxing
AU - Kainer, Karl Ulrich
AU - Hort, Norbert
PY - 2017
Y1 - 2017
N2 - The effects of Mn (peritectic system) and Zn (eutectic system) on the grain refinement of commercial pure Mg were investigated. Interdependence model and solute paradigm theory were applied to evaluate the grain nucleation and growth for these two alloy systems. Both Mn and Zn can refine the grain of pure Mg. Compared to Mg–Zn, the nucleant particles in Mg–Mn alloys are more potent, but the relatively activated number of nucleation sites is much fewer. Zn with relatively high value of growth restriction factor increases the initial rate of development of the constitutional supercooling (CS) zone at the earliest stage of grain growth, which plays a key role in determining the final grain size. Moreover, heavy segregation of Zn during solidification provides a driving-force to activate further nucleation in the CS zone, which may trigger some unknown native nucleation particles to sever as nuclei.
AB - The effects of Mn (peritectic system) and Zn (eutectic system) on the grain refinement of commercial pure Mg were investigated. Interdependence model and solute paradigm theory were applied to evaluate the grain nucleation and growth for these two alloy systems. Both Mn and Zn can refine the grain of pure Mg. Compared to Mg–Zn, the nucleant particles in Mg–Mn alloys are more potent, but the relatively activated number of nucleation sites is much fewer. Zn with relatively high value of growth restriction factor increases the initial rate of development of the constitutional supercooling (CS) zone at the earliest stage of grain growth, which plays a key role in determining the final grain size. Moreover, heavy segregation of Zn during solidification provides a driving-force to activate further nucleation in the CS zone, which may trigger some unknown native nucleation particles to sever as nuclei.
KW - Constitutional supercooling
KW - Grain refinement
KW - Magnesium alloys
KW - Solute elements
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=85042276950&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-52392-7_29
DO - 10.1007/978-3-319-52392-7_29
M3 - Article in conference proceedings
AN - SCOPUS:85042276950
SN - 978-3-319-52391-0
T3 - Minerals, Metals and Materials Series
SP - 191
EP - 198
BT - Magnesium Technology 2017
A2 - Neelameggham, Neale R.
A2 - Singh, Alok
A2 - Solanki, Kiran N.
A2 - Orlov, Dmytro
PB - Springer International Publishing AG
T2 - International Symposium on Magnesium Technology 2017
Y2 - 26 February 2017 through 2 March 2017
ER -