Variation of long-period stacking order structures in rapidly solidified Mg97Zn1Y2 alloy
Variation of long-period stacking order structures in rapidly solidified Mg97Zn1Y2 alloy
复制标题
DOI：
10.1016/j.msea.2004.10.040
复制
发表时间：
2005-02-25
期刊：
影响因子：
6.4
通讯作者：
Nishida, M
中科院分区：
文献类型：
--
作者：
Matsuda, M;Ii, S;Nishida, M
采用常规电镜和高分辨率透射电镜研究了Mg97Zn1Y2合金快速凝固过程中的长周期层序（LPSO）结构。LPSO结构中有四种堆叠序列，分别为ABABABCACACABCBCBC的18R、ababbababcbc的14H、ABACBCBCAB的10H和ABABABABCACACACABCBCBCBC的24R。在本研究中主要观察到18R结构。其余三种是偶尔在某些地方观察到的。ioh和24R结构是最近发现的。晶格常数18 r (1 (1) / bar1 (1) bar2) (3), 14 h ((2) bar1 (2) bar1 (1) bar1 (1) bar2 (1) bar2), 10 h (1 (3) / bar1 (1) bar3(1)在酒吧)和24 r (1 (1) / bar1 (1) bar1 (1) bar2)(3)结构估计= 0.320 nm和c = 4.678 nm, a = 0.325 nm和c = 3.694 nm, a = 0.325 nm和c = 2.603 nm, a = 0.322 nm和c = 6.181 nm的六角形结构,分别。(C) 2004 Elsevier B.V.版权所有
The long-period stacking order (LPSO) structures in rapidly solidified Mg97Zn1Y2 alloy have been studied by conventional and high-resolution transmission electron microscopes (HRTEMs). There are four kinds of stacking sequences in the LPSO structures, i.e., 18R of ABABABCACACABCBCBC, 14H of ACBCBABABABCBC, 10H of ABACBCBCAB and 24R of ABABABABCACACACABCBCBCBC. The 18R structure is dominantly observed in the present study. The rest three are occasionally observed in places. The I OH and 24R structures are recently discovered. The lattice constants of 18R(1 (1) over bar1 (1) over bar2)(3), 14H((2) over bar1 (2) over bar1 (1) over bar1 (1) over bar2 (1) over bar2), 10H(1 (3) over bar1 (1) over bar3 (1) over bar) and 24R(1 (1) over bar1 (1) over bar1 (1) over bar2)(3) Structures are estimated to be a = 0.320 nm and c = 4.678 nm, a = 0.325 nm and c = 3.694 nm, a = 0.325 nm and c = 2.603 nm, a = 0.322 nm and c = 6.181 nm for the hexagonal structure, respectively. (C) 2004 Elsevier B.V. All rights reserved.