Influence of rare-earth addition on the long-period stacking ordered phase in cast Mg-Y-Zn alloys

被引：18

作者：

Garces, Gerardo ^{[1
]}

Requena, Guillermo ^{[2
]}

Tolnai, Domonkos ^{[3
]}

Perez, Pablo ^{[1
]}

Adeva, Paloma ^{[1
]}

Stark, Andreas ^{[3
]}

Schell, Norbert ^{[4
]}

机构：

[1] Natl Ctr Met Res CENIM CSIC, Dept Met Phys, Madrid 28040, Spain

[2] Vienna Univ Technol, Inst Mat Sci & Technol, A-1040 Vienna, Austria

[3] Helmholtz ZentrumGeesthacht, Inst Mat Res, D-21502 Geesthacht, Germany

[4] DESY, Helmholtz ZentrumGeesthacht Outstn, Hamburg, Germany

来源：

JOURNAL OF MATERIALS SCIENCE | 2014年 / 49卷 / 07期

关键词：

MECHANICAL-PROPERTIES; EXTRUDED ALLOY; SOLID-SOLUTION; PRECIPITATION; STRENGTH; MICROSTRUCTURE; TEMPERATURE; EVOLUTION; POLYTYPES; BEHAVIOR;

D O I：

10.1007/s10853-013-7967-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure and thermal stability of the Mg97Y2Zn1 (at.%) alloy, modified with the addition of 0.5 at.% of gadolinium or neodymium, have been examined by synchrotron radiation diffraction during in situ differential scanning calorimetry. The microstructure of the three alloys consists of magnesium dendrites with the Long Period Stacking Ordered (LPSO) phase at interdendritic regions. Rare-earth atoms substitute yttrium atoms in the LPSO phase, promoting the formation of the 14H structure. Lattice parameters of the LPSO do not change significantly with the rare-earth addition. However, they reduce the melting point of the LPSO phase, especially in the case of neodymium addition.

引用

页码：2714 / 2722

页数：9

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