原位Mg<sub>2</sub>Si/Al复合材料的变质与半固态组织演变

赵宇光; 秦庆东; 丛培军

专利文献信息 | 浏览量 : 0 下载量: 222 CSCD: 4

导出
分享
收藏
专辑

原位Mg₂Si/Al复合材料的变质与半固态组织演变
Modification and Semi-solid Microstructure Evolution of In-situ Mg₂Si/Al Composites
2007年第3期页码：235-237
纸质出版日期： 2007 ，
DOI：

扫描看全文

[1]赵宇光,秦庆东,丛培军.原位Mg_2Si/Al复合材料的变质与半固态组织演变[J].特种铸造及有色合金,2007(03):235-237+164.

Zhao Yuguang, Qin Qingdong, Cong Peijun. Modification and Semi-solid Microstructure Evolution of In-situ Mg₂Si/Al Composites[J]. Special Casting & Nonferrous Alloys, 2007,(3):235-237.
[1]赵宇光,秦庆东,丛培军.原位Mg_2Si/Al复合材料的变质与半固态组织演变[J].特种铸造及有色合金,2007(03):235-237+164. DOI：

Zhao Yuguang, Qin Qingdong, Cong Peijun. Modification and Semi-solid Microstructure Evolution of In-situ Mg₂Si/Al Composites[J]. Special Casting & Nonferrous Alloys, 2007,(3):235-237. DOI：

摘要

研究了Sr对原位Mg2Si/Al复合材料显微组织的影响

并利用等温热处理的方法成功地得到了半固态球状组织。其结果显示

Sr加入后能够改变初生Mg2Si的树枝晶形貌

随着Sr含量的增加

其形貌逐渐由多边形状变为块状

经过等温热处理后

初生Mg2Si相和α-Al相同时被球化

并简要地讨论了球化机理。

Abstract

The effects of Sr content on the microstructure of in-situ Mg2Si/Al composites have been observed by XRD

SEM and extracted technology.And spherical semi-solid microstructure in the composites can be successfully achieved by isothermal heat treatment.The results show that with the increase of Sr content

primary Mg2Si particles are converted from dendritic phase into polygonal and then to quadrangle with grain size of about 40 μm.After isothermal heat treatment

both the primary Mg2Si particles and α-Al phase in the composites are spheroidized.The spheroidization mechanism has been approached briefly.