| Ce和Sb及时效处理对Mg-Zn-Al系铸造镁合金组织的影响 |
| |
| 引用本文： | 林晓娉,董允,孙旭光,王铁宝.Ce和Sb及时效处理对Mg-Zn-Al系铸造镁合金组织的影响[J].材料热处理学报,2010,31(2). |
| |
| 作者姓名： | 林晓娉 董允 孙旭光 王铁宝 |
| |
| 作者单位： | 河北工业大学材料科学与工程学院,天津,300130 |
| |
| 摘 要： | 利用SEM、X射线衍射等手段研究了微量元素Ce和Sb及时效处理对Mg-Al-Zn系铸造合金组织和性能的影响。结果表明:Ce和Sb元素显著地细化了试验合金铸态组织,改善β相形貌及分布,并形成呈粒状弥散分布Mg3Sb2、Al11Ce3、CeCu6的新相;Mg-10Zn-2Al-1Cu+0.5%(Ce+Sb)试验合金的时效沉淀过程中弥散析出粒状、杆状析出相(Mg32(Al,Zn)49、Mg32Al47Cu7、Mg3Zn2、Mg3Sb2、CeCu6等),且其析出相的形成、析出速度和长大速度等都远远小于AZ91D合金,显示较好的时效强化效应。
|
| 关 键 词： | Mg-Zn-Al合金 Ce Sb 时效处理 微观组织 |
Effects of addition of Ce,Sb and aging trearment on microstructure of Mg-Zn-Al casting magnesium alloy |
| |
| LIN Xiao-ping,DONG Yun,SUN Xu-guang,WANG Tie-bao.Effects of addition of Ce,Sb and aging trearment on microstructure of Mg-Zn-Al casting magnesium alloy[J].Transactions of Materials and Heat Treatment,2010,31(2). |
| |
| Authors: | LIN Xiao-ping DONG Yun SUN Xu-guang WANG Tie-bao |
| |
| Affiliation: | School of Material Science and Engineering;Hebei University of Technology;Tianjin 300130;China |
| |
| Abstract: | Effects of addition of Ce and Sb and aging treatment on microstructure and mechanical properties of Mg-Zn-Al casting magnesium alloy were studied by SEM and XRD. The results show that the addition of Ce and Sb results in grain refinement of the as-cast Mg-Zn-Al alloy and improves the morphology and distribution of β-phase,and granular phasea of Mg_3SB_2 ,Al_(11)Ce_3 and CeCu_6 dispersively distributed in the alloy are observed. The precipitation process of Mg-10Zn-2Al-1Cu alloy containing 0. 5% Ce and 0.5% Sb during aging is as follows : supersaturated solid solution(SSSS)→precipitation of granular,disciform and rod-shaped phases of Mg_(32) (Al,Zn)_(49) ,Mg_(32) Al_(47)Cu_7 ,Mg_3ZN_2 ,Mg_3SB_2 ,and CeCu_6. The precipitation process of Mg-10Zn-2Al-1Cu alloy is much slower than that of AZ91D alloy. |
| |
| Keywords: | Mg-Zn-Al alloy Ce Sb aging treatment microstructure |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
