Synchronized collapse and formation of long-period stacking and chemical orders in Mg85Zn6Y9

被引：8

作者：

Matsushita, Masafumi ^{[1
]}

Bednarcik, Jozef ^{[2
]}

Sakata, Yuya ^{[1
]}

Akamatsu, Shutaro ^{[1
]}

Nishiyama, Norimasa ^{[2
]}

Michalikoya, Jana ^{[2
]}

Yamasaki, Michiaki ^{[3
]}

Kawamura, Yoshihito ^{[3
]}

机构：

[1] Ehime Univ, Dept Mech Engn, Matsuyama, Ehime 7900826, Japan

[2] DESY, D-22607 Hamburg, Germany

[3] Kumamoto Univ, Magnesium Res Ctr, Kumamoto 8608555, Japan

来源：

PHYSICA B-CONDENSED MATTER | 2015年 / 461卷

关键词：

Long-range ordering; Crystal structure; X-ray diffraction (XRD); ALLOYS; PHASE;

D O I：

10.1016/j.physb.2014.12.021

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Phase transformation of the long period stacking order (LPSO) synchronized with the chemical concentration in Mg85Zn6Y9 has been investigated during both heating and cooling via in situ X-ray diffraction analysis. With increasing temperature, above 800 K, 10H-type LPSO phase collapsed firstly. 10H structural modulation collapsed earlier than the chemical modulation of 5 layers per period. The in plane ordering consisted of aligned L1(2)-type clusters vanished before the collapse of chemical and structural modulation of 18R-type LPSO. After, the chemical and structural modulation of 18R-type LPSO show synchronize collapse. During cooling, the 14H-type LPSO emerged in addition to the 18R-type LPSO. The growths of chemical and structural modulation start at the same temperature. After that, the formation of in plane order consisting of aligned L1(2)-type Zn-Y clusters emerged. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：147 / 153

页数：7

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