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Grain refinement of magnesium alloys by Mg–Zr master alloys…

 

论文名称

Grain refinement of magnesium alloys by Mg–Zr master alloys: The role of alloy chemistry and Zr particle number density

发表期刊名称

Advanced Engineering Materials

简介

Abstract Although refinement of the as-cast grain size of magnesium alloys by Zr is well established commercially, little research has been undertaken to optimize this refinement technology and to quantify the relative performance of different Mg–Zr master alloys. The performance of Mg–Zr master alloys was found to be related to (1) the number density of Zr particles between 1 and 56508m in size where the master alloy with the largest number density of these particles exhibits the best refinement, and (2) the alloy's growth restriction factor ( Q ) where a linear relationship between grain size and 1/ Q , was found to exist for each master alloy. An equation for predicting grain size based on the Interdependence model was developed. Further, the Interdependence Model was improved to be able to cater for an increasing Zr particle number density with increasing values of Q.

图片

发表时间

2013.03

影响因子

1.758

完成人

孙明, Mark A. Easton, David H. StJohn, 吴国华, Trevor B. Abbott, 丁文江

联系人

吴国华

电话

 

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