Einfluss von MgCo 3  auf die Kornfeinung der Magnesiumlegierung AZ31 | Zendy

Gao S.Y. | Zendy; Cui J.Z. | Zendy; Li Q.C. | Zendy; Zhang Z.Q. | Zendy

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Einfluss von MgCo 3 auf die Kornfeinung der Magnesiumlegierung AZ31

Author(s) -

Gao S.Y.,

Cui J.Z.,

Li Q.C.,

Zhang Z.Q.

Publication year - 2010

Publication title -

materialwissenschaft und werkstofftechnik

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.285

H-Index - 38

eISSN - 1521-4052

pISSN - 0933-5137

DOI - 10.1002/mawe.201000591

Subject(s) - nucleation , magnesium , magnesium alloy , microstructure , grain boundary , gibbs free energy , alloy , grain size , metallurgy , materials science , thermodynamics , physics

The effect of MgCO 3 addition on the as‐cast microstructure of AZ31 magnesium alloy has been widely investigated. The results show that the average grain size of the α‐Mg grain in AZ31 magnesium alloy decreases from about 570 μm to 100 μm by the addition of 0.6 wt.% MgCO 3 as gain refiner at 760°C. Based on the analysis of EDS, theoretical calculation of E bind and Gibbs free energy, we esteem that grain refiner mechanism is mainly attributed to the generation of Al 4 C 3 , which can be serviced as nucleation site and restrain grain boundary from growing and transferring.

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