[1]关绍康,曹文博,王迎新,等.Mg-8Zn-4Al-0.3Mn-xRE合金的时效析出过程及其动力学[J].郑州大学学报(工学版),2003,24(02):1-5.[doi:10.3969/j.issn.1671-6833.2003.02.001]
　Guan Shaokang,Cao Wenbo,Wang Yingxin,et al.Aging precipitation process and kinetics of Mg-8Zn-4Al-0.3Mn-xRE alloy[J].Journal of Zhengzhou University (Engineering Science),2003,24(02):1-5.[doi:10.3969/j.issn.1671-6833.2003.02.001]

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Mg-8Zn-4Al-0.3Mn-xRE合金的时效析出过程及其动力学()

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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

24

期数:

2003年02期

页码:

1-5

栏目:

出版日期:

1900-01-01

文章信息/Info

Title:

Aging precipitation process and kinetics of Mg-8Zn-4Al-0.3Mn-xRE alloy

作者:

关绍康; 曹文博; 王迎新; 等.

郑州大学材料工程学院,河南,郑州,450002, 天元铝业集团,河南,三门峡,472000

Author(s):

Guan Shaokang; Cao Wenbo; Wang Yingxin; etc

关键词:

Mg-8Zn-4Al-0.3Mn合金;  RE;  时效过程;  动力学

Keywords:

Mg-8Zn-4Al-0.3Mn alloy;  RE;  the aging process;  Dynamics

DOI:

10.3969/j.issn.1671-6833.2003.02.001

文献标志码:

A

摘要:

采用金相显微分析和DSC分析了Mg-8Zn-4Al-0.3Mn-xRE合金时效析出过程及其动力学,结果表明,未添加RE元素的Mg-8Zn-4Al-0.3Mn合金的时效析出过程为:过饱和固溶体→细小弥散析出相→再结晶软化和析出相的聚集长大;添加RE元素的Mg-8Zn-4Al-0.3Mn合金的时效析出过程为:过饱和固溶体→细小弥散析出相→析出相的聚集长大.人工时效后,与未加RE的合金相比,合金2,3,4显微硬度峰值提高分别达5.6%,9%,13.4%;随着RE元素含量的增加,合金的析出相形成激活能呈逐渐增大的

Abstract:

The aging precipitation process and its kinetics of Mg-8Zn-4Al-0.3Mn-xRE alloy were analyzed by metallographic microscopy and DSC, and the results showed that the aging precipitation process of Mg-8Zn-4Al-0.3Mn alloy without RE elements was as follows: supersaturated solid solution→ fine diffusion precipitated phase→ recrystallization softening and aggregation and growth of precipitated phase. The aging precipitation process of Mg-8Zn-4Al-0.3Mn alloy with RE element is as follows: supersaturated solid solution→ fine dispersion precipitated phase→ aggregation and growth of precipitated phase. After artificial aging, compared with the alloy without RE, the peak microhardness of alloy 2, 3 and 4 increased by 5.6%, 9% and 13.4%, respectively. With the increase of RE element content, the activation energy of precipitated phase formation of the alloy gradually increases

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