| Shuffle and glide mechanisms of prismatic dislocations in a hexagonal C14-type Laves-phase intermetallic compound | |
| Zhang, Yongchao1,2,3; Zhang, Wei3,4; Du, Beining5; Li, Wenqing3; Sheng, Liyuan5; Ye, Hengqiang3; Du, Kui3 | |
| Corresponding Author | Du, Kui(kuidu@imr.ac.cn) |
| 2020-10-26 | |
| Source Publication | PHYSICAL REVIEW B
 |
| ISSN | 2469-9950 |
| Volume | 102Issue:13Pages:9 |
| Abstract | 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. |
| Funding Organization | 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 |
| DOI | 10.1103/PhysRevB.102.134117 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Materials Science ; Physics |
| WOS Subject | Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter |
| WOS ID | WOS:000582413300001 |
| Publisher | AMER PHYSICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/141122 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Du, Kui |
| Affiliation | 1.Anhui Univ, Inst Phys Sci, Key Lab Struct & Funct Regulat Hybrid Mat, Minist Educ, Hefei 230601, Peoples R China 2.Anhui Univ, Inst Informat Technol, Key Lab Struct & Funct Regulat Hybrid Mat, Minist Educ, Hefei 230601, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 4.Nankai Univ, Coll Chem, Minist Educ, Key Lab Adv Energy Mat Chem, Tianjin 300071, Peoples R China 5.Peking Univ, Shenzhen Inst, Shenzhen 518055, Peoples R China |
| Recommended Citation 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. |
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