Effect of minor elements on grain size of Mg-9%Al alloy

被引：46

作者：

Tamura, Y ^{[1
]}

Motegi, T ^{[1
]}

Kono, N ^{[1
]}

Sato, E ^{[1
]}

机构：

[1] Chiba Inst Technol, Dept Engn Met, Narashino, Chiba 2750016, Japan

来源：

MAGNESIUM ALLOYS 2000 | 2000年 / 350-3卷

关键词：

grain size; Mg-9%Al alloy; minor elements; nucleation; superheating;

D O I：

10.4028/www.scientific.net/MSF.350-351.199

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Influence of minor elements, such as Be, Zr, Fe and Mn, on grain size and grain-refining effect of Mg-9%Al alloy was investigated by use of high-purity Mg-9%Al alloy(high-purity alloy). This high-purity alloy was prepared from distilled pure magnesium and 99.99% commercial aluminum. Given amounts of Be, Zr, Fe and Mn were then added. Microscopic examination clarified that these elements have grain coarsening action for natural fine-grained high-purity alloys, and the grain refinement by superheating was possible as long as the alloy grain was coarsened by Fe or Mn addition. EPMA analysis revealed the existence of some species of aluminum carbide in high-purity alloy. Fe-Al-C-O and Mn-Al-C-O compounds were also observed in alloys coarse-grained by Fe or Mn addition. Existence of aluminum carbide and its change were probably associated with the grain size of the Mg-9%Al alloy.

引用

页码：199 / 203

页数：5