Shuffle and glide mechanisms of prismatic dislocations in a hexagonal C14-type Laves-phase intermetallic compound

doi:10.1103/PhysRevB.102.134117

IMR OpenIR

	Shuffle and glide mechanisms of prismatic dislocations in a hexagonal C14-type Laves-phase intermetallic compound
	Zhang, Yongchao 1,2,3; Zhang, Wei 3,4; Du, Beining 5; Li, Wenqing 3; Sheng, Liyuan 5; Ye, Hengqiang 3; Du, Kui 3
通讯作者	Du, Kui(kuidu@imr.ac.cn)
	2020-10-26
发表期刊	PHYSICAL REVIEW B
ISSN	2469-9950
卷号	102 期号:13 页码:9
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.
资助者	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
收录类别	SCI
语种	英语
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
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000582413300001
出版者	AMER PHYSICAL SOC
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/141125
专题	中国科学院金属研究所
通讯作者	Du, Kui
作者单位	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
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.