Progress in the Investigations of Grain Boundary Relaxation

doi:10.1080/10408436.2015.1135416

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院固体物理研究所

	Progress in the Investigations of Grain Boundary Relaxation
	Kong, Q. P.; Fang, Q. F.
刊名	CRITICAL REVIEWS IN SOLID STATE AND MATERIALS SCIENCES
	2016
卷号	41 期号:3 页码:192-216
关键词	Internal Friction Grain Boundary Bicrystals Bamboo-crystals Polycrystals
DOI	10.1080/10408436.2015.1135416
文献子类	Review
英文摘要	Internal friction (or damping) is a measure of energy dissipation during mechanical vibration. The internal friction peak induced by grain boundary (GB) relaxation was discovered by Ke in polycrystals in 1947. The GB internal friction and related anelastic effects have been successfully interpreted by Zener's anelastic theory and viscous sliding model. Since then, the GB internal friction peak has been widely used to study the dynamic process of GBs, impurity segregation at GBs and relevant processes in materials science.Previously, the GB internal friction was mostly studied with polycrystalline materials, in which mixed contributions of different types of GBs are involved. Since the microstructures and behaviors for different types of GBs are different, the detailed mechanism of the GB peak in polycryatals has not been clearly clarified.From the beginning of the 21th century, the internal friction in bicrystals (each has a single boundary) with different misorientations and rotation axes has been systematically investigated. The results indicate that the internal friction can be used to distinguish the individual behavior of different types of GBs and applied to the practice of GB engineering.Moreover, the coupling effect and compensation effect involved in GB relaxation has been recently observed and explained. The coupling effect means a correlated atomic motion occurred in GB relaxation. The compensation effect indicates that the apparent activation enthalpy is linearly related to the activation entropy in GB relaxation. These findings improve the understanding of the mechanism of GB internal friction.This article attempts to give a comprehensive review to the investigations of GB internal friction in polycrystals, bamboo-crystals, and bicrystals. The microscopic mechanisms and the further applications of GB internal friction are discussed and prospected.
WOS关键词	INTERNAL-FRICTION PEAK ; HIGH-PURITY ALUMINUM ; SEVERE PLASTIC-DEFORMATION ; MEDIUM-TEMPERATURE ; SINGLE-CRYSTALS ; FCC METALS ; DAMPING CAPACITIES ; STRESS-RELAXATION ; PURE MAGNESIUM ; GENERAL TYPE
WOS研究方向	Materials Science ; Physics
语种	英语
WOS记录号	WOS:000374782300002
资助机构	National Natural Science Foundation of China(10274085 ; National Natural Science Foundation of China(10274085 ; National Natural Science Foundation of China(10274085 ; National Natural Science Foundation of China(10274085 ; 10674136 ; 10674136 ; 10674136 ; 10674136 ; 10804108 ; 10804108 ; 10804108 ; 10804108 ; 11274305 ; 11274305 ; 11274305 ; 11274305 ; 11274309) ; 11274309) ; 11274309) ; 11274309) ; National Natural Science Foundation of China(10274085 ; National Natural Science Foundation of China(10274085 ; National Natural Science Foundation of China(10274085 ; National Natural Science Foundation of China(10274085 ; 10674136 ; 10674136 ; 10674136 ; 10674136 ; 10804108 ; 10804108 ; 10804108 ; 10804108 ; 11274305 ; 11274305 ; 11274305 ; 11274305 ; 11274309) ; 11274309) ; 11274309) ; 11274309)
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/22391]
专题	合肥物质科学研究院_中科院固体物理研究所
作者单位	Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei, Peoples R China
推荐引用方式 GB/T 7714	Kong, Q. P.,Fang, Q. F.. Progress in the Investigations of Grain Boundary Relaxation[J]. CRITICAL REVIEWS IN SOLID STATE AND MATERIALS SCIENCES,2016,41(3):192-216.
APA	Kong, Q. P.,&Fang, Q. F..(2016).Progress in the Investigations of Grain Boundary Relaxation.CRITICAL REVIEWS IN SOLID STATE AND MATERIALS SCIENCES,41(3),192-216.
MLA	Kong, Q. P.,et al."Progress in the Investigations of Grain Boundary Relaxation".CRITICAL REVIEWS IN SOLID STATE AND MATERIALS SCIENCES 41.3(2016):192-216.