Effects of calcium, samarium addition on microstructure and mechanical properties of AZ61 magnesium alloy

被引：28

作者：

Chen Yu'an ^{[1
,2
]}

Jin Li ^{[1
]}

Fang Dan ^{[1
]}

Song Yu ^{[1
]}

Ye Ruiyu ^{[1
]}

机构：

[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China

[2] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China

来源：

JOURNAL OF RARE EARTHS | 2015年 / 33卷 / 01期

关键词：

AZ61; magnesium; microstructure; mechanical properties; samarium; rare earths; MG-AL-CA; DEFORMATION-BEHAVIOR; CORROSION BEHAVIOR; EARTH-ELEMENTS; AZ91; MAGNESIUM; SYSTEM; ZN; RESISTANCE; STABILITY; PHASES;

D O I：

10.1016/S1002-0721(14)60387-2

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The microstructure and mechanical properties of AZ61 magnesium alloy with Ca, Sm addition were investigated. The results showed that the addition of 0.5 wt.% Ca reduced the quantity of Mg17Al12 phase, and formed a new Al4Ca phase which is reticular in AZ61 alloy. With the addition of Ca and Sm, the microstructure was further refined and new Al-Sm rich phases were formed in AZ61 alloy with 0.6 wt.%-1.5 wt.% Sm addition, the TEM analysis confirmed that they were Al2Sm and Al4Sm. Tensile tests showed that 1.0 wt.% Sm addition contributed to the formation of the Al2Sm and Al4Sm and the improvement in the ambient strength, i.e., an ultimate tensile strength of 327 MPa and an elongation of 10.1%. However, excessive Sm addition led to the coarsening of Al2Sm and Al4Sm phases, thus resulted in the decline of strength and plasticity.

引用

页码：86 / 92

页数：7

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