Indentation-induced Plasticity, Damage and Fracture in Si and GaAs Single Crystals
Xu Yong-Bo
Corresponding AuthorXu Yong-Bo(
AbstractInvestigations of the plasticity, damage and fracture induced by micro-indentation are reviewed. The principal findings are: (a) Micro-Indentation may induce a transition from crystalline to nano-crystalline and amorphous structure, and there is a critical stress for this kind of transition. The shear stress, rather than the hydrostatic stress is proposed to be attributed to this transition. (b) There is a critical current density for the crystalline nucleation, and it is no related to the irradiation-induced temperature rise. (c) The crack-tip produced dislocations by during Indentation is not atomically sharp, leading to crystal lattice distortion, and even to a transition from a crystalline lattice to disordered structure. An amorphous band with a width of 1-2nm between crack-walls is formed, and the crack propagation is then along the amorphous hand, rather than sequential rupture of the cohesive bonds. (d) Fast Fourier Transformation (FFT)-SAED and corresponding Inverse-Fast Fourier Transformation (IFFT) fringe images from different lattice planes in selected areas of the crack-tip show that deformation around the crack-tip deformation is anisotropic.
Keywordmicro-indentation HRTEM crystallization and amorphization crack-tip structure Fast Fourier Transformation (FFT) and Inverse-Fast Fourier Transformation (IFFT)
Indexed BySCI
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Ceramics
WOS IDWOS:000273029200001
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Document Type期刊论文
Corresponding AuthorXu Yong-Bo
AffiliationChinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Xu Yong-Bo. Indentation-induced Plasticity, Damage and Fracture in Si and GaAs Single Crystals[J]. JOURNAL OF INORGANIC MATERIALS,2009,24(6):1081-1089.
APA Xu Yong-Bo.(2009).Indentation-induced Plasticity, Damage and Fracture in Si and GaAs Single Crystals.JOURNAL OF INORGANIC MATERIALS,24(6),1081-1089.
MLA Xu Yong-Bo."Indentation-induced Plasticity, Damage and Fracture in Si and GaAs Single Crystals".JOURNAL OF INORGANIC MATERIALS 24.6(2009):1081-1089.
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