Laves相Cr_2 Nb中棱锥面层错结构的像差矫正电子显微学分析
Aberration-corrected high-resolution transmission electron microscopy investigation of stacking faults on pyramidal planes in C14 Laves phase Cr_2 Nb
查看参考文献10篇
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文摘
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本文利用像差矫正透射电子显微镜,在具有C14结构的Laves相Cr_2Nb中观察到两种新型的(1101)棱锥面层错结构,并对这些层错的精细构型进行了分析。结果表明:这两种棱锥面层错具有形状特异的结构单元,同时原有的Laves相中的原子配位数也发生改变,在其中一种层错内还形成了拓扑密堆相中不常见的13配位数。这两种新的堆垛方式丰富了对拓扑密堆相中缺陷结构的认识。 |
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其他语种文摘
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By using aberration-corrected high-resolution transmission electron microscopy, two types of novel stacking faults on (1-bar101) pyramidal planes in C14 Laves phase Cr_2Nb were investigated. The results show that these two stacking faults possess abnormal shapes of building blocks. Furthermore, the original coordination numbers of atoms in the C14 Laves phase have been changed, and a CN13 coordination number is formed in the stacking faults, which is rarely reported in TCP phases. These new defect structures would enrich our understanding of the structure of TCP phases. |
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来源
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电子显微学报
,2013,32(4):279-283 【核心库】
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关键词
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Laves相
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金属间化合物
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Cr_2Nb
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层错
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像差矫正高分辨透射电镜
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地址
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1.
中国科学院金属研究所, 沈阳材料科学国家(联合)实验室, 辽宁, 沈阳, 110016
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北京大学深圳研究院, 广东, 深圳, 518057
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-6281 |
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学科
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化学;晶体学;金属学与金属工艺 |
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基金
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国家973计划
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国家自然科学基金
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文献收藏号
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CSCD:4924000
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参考文献 共
10
共1页
|
|
1.
Taub A I. Intermetallic compounds for high-temperature structural use.
Science,1989,243(4891):616-621
|
CSCD被引
11
次
|
|
|
|
|
2.
Tien J. Materials for elevatedtemperature applications.
Materials Science and Engineering: A,1991,143(1/2):43-49
|
CSCD被引
1
次
|
|
|
|
|
3.
Pearson W.
Lattice Spacings And Structures of Metals And Alloys, Vols I and II,1958
|
CSCD被引
1
次
|
|
|
|
|
4.
Livingston J. Laves-phase superalloys?.
Physica Status Solidi (a),1992,131(2):415-423
|
CSCD被引
3
次
|
|
|
|
|
5.
Chisholm M. Dislocations in complex materials.
Science,2005,307(5710):701-703
|
CSCD被引
13
次
|
|
|
|
|
6.
Zhang W. Undulating slip in Laves phase and implications for deformation in brittle materials.
Physical Review Letters,2011,106(16):165505
|
CSCD被引
9
次
|
|
|
|
|
7.
Ye H Q. Domain-structures of tetrahedrally close-packed phases with juxtaposed pentagonal antiprisms. 2. Domain boundary structures of the C-14 Laves phase.
Philosophical Magazine A,1985,51(6):839-848
|
CSCD被引
8
次
|
|
|
|
|
8.
Urban K. Electron microscopy-interfaces under focus.
Nature Materials,2006,5(3):173-174
|
CSCD被引
1
次
|
|
|
|
|
9.
Thust A. Focalseries reconstruction in HRTEM: Simulation studies on non-periodic objects.
Ultramicroscopy,1996,64(1/4):211-230
|
CSCD被引
7
次
|
|
|
|
|
10.
Ye H Q. Topologically close-packed phases in superalloys: New phases and domain structures.
Acta Metallrugica Sinica,1986,22(1):1-43
|
CSCD被引
1
次
|
|
|
|
|
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