中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 金属研究所
  3. 中国科学院金属研究所
Shuffle and glide mechanisms of prismatic dislocations in a hexagonal C14-type Laves-phase intermetallic compound

文献类型：期刊论文

作者Zhang, Yongchao2,3,4; Zhang, Wei1,2; Du, Beining5; Li, Wenqing2; Sheng, Liyuan5; Ye, Hengqiang2; Du, Kui2
刊名PHYSICAL REVIEW B
出版日期2020-10-26
卷号102期号:13页码:9
ISSN号2469-9950
DOI10.1103/PhysRevB.102.134117
通讯作者Du, Kui(kuidu@imr.ac.cn)
英文摘要Complex structured intermetallic compounds often show brittleness at ambient temperature or under high strain rate deformation, but ductility at elevated temperature or low strain rate deformation. The change of dislocation behavior plays a decisive role in the brittle-to-ductile transition. Here, dislocations are studied in a hexagonal structured Laves-phase intermetallic compound with aberration-corrected scanning transmission electron microscopy after quasistatic compression at high temperature or high-speed impact at room temperature. Different slip mechanisms are resolved for the prismatic dislocations. Under the high-temperature compression, a shuffle mechanism assisted by diffusion mediates the dislocation motion to form planar defects strictly following the topologically close-packing rules. In contrast, under the high-speed room-temperature impact, the prismatic dislocations prefer to glide on undulated planes that comprise small facets with high atom density.
资助项目National Natural Science Foundation of China[91960202] ; National Key Research and Development Program of China[2017YFA0700701] ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences[QYZDJ-SSW-JSC024] ; Natural Science Foundation of Guangdong Province of China[2020A151501305] ; Natural Science Foundation of Guangdong Province of China[2018A030313950] ; Shenyang National Laboratory for Materials Science[L2019R09] ; Shenyang National Laboratory for Materials Science[L2019F14]
WOS研究方向Materials Science ; Physics
语种英语
出版者AMER PHYSICAL SOC
WOS记录号WOS:000582413300001
资助机构National Natural Science Foundation of China ; National Key Research and Development Program of China ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences ; Natural Science Foundation of Guangdong Province of China ; Shenyang National Laboratory for Materials Science
源URL[http://ir.imr.ac.cn/handle/321006/141121]  
专题金属研究所_中国科学院金属研究所
通讯作者Du, Kui
作者单位1.Nankai Univ, Coll Chem, Minist Educ, Key Lab Adv Energy Mat Chem, Tianjin 300071, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
3.Anhui Univ, Inst Informat Technol, Key Lab Struct & Funct Regulat Hybrid Mat, Minist Educ, Hefei 230601, Peoples R China
4.Anhui Univ, Inst Phys Sci, Key Lab Struct & Funct Regulat Hybrid Mat, Minist Educ, Hefei 230601, Peoples R China
5.Peking Univ, Shenzhen Inst, Shenzhen 518055, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Yongchao,Zhang, Wei,Du, Beining,et al. Shuffle and glide mechanisms of prismatic dislocations in a hexagonal C14-type Laves-phase intermetallic compound[J]. PHYSICAL REVIEW B,2020,102(13):9.
APA Zhang, Yongchao.,Zhang, Wei.,Du, Beining.,Li, Wenqing.,Sheng, Liyuan.,...&Du, Kui.(2020).Shuffle and glide mechanisms of prismatic dislocations in a hexagonal C14-type Laves-phase intermetallic compound.PHYSICAL REVIEW B,102(13),9.
MLA Zhang, Yongchao,et al."Shuffle and glide mechanisms of prismatic dislocations in a hexagonal C14-type Laves-phase intermetallic compound".PHYSICAL REVIEW B 102.13(2020):9.

入库方式： OAI收割

来源：金属研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。