Journal ArticleDOI
A different type of indentation size effect
Sang Hoon Shim,Sang Hoon Shim,Hongbin Bei,Easo P. George,Easo P. George,George M. Pharr,George M. Pharr +6 more
TLDR
In this paper, pop-in during nanoindentation, which indicates the onset of dislocation plasticity, was systematically investigated in annealed and pre-strained single crystals of nickel using spherical indenters with different tip radii.About:
This article is published in Scripta Materialia.The article was published on 2008-11-01. It has received 240 citations till now. The article focuses on the topics: Nanoindentation & Indentation.read more
Citations
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Mechanical behavior of high-entropy alloys
TL;DR: In this article, the authors present a comprehensive, critical review of the mechanical behavior of high-entropy alloys and some closely related topics, including thermodynamics and kinetics.
Journal ArticleDOI
Incipient plasticity and dislocation nucleation of FeCoCrNiMn high-entropy alloy
C. Zhu,Zhaoping Lu,T.G. Nieh +2 more
TL;DR: In this article, an instrumented nanoindentation was conducted on a FeCoCrMnNi high-entropy alloy with a single face-centered cubic structure to characterize the nature of incipient plasticity.
Journal ArticleDOI
Changes in surface layer of silicon wafers from diamond scratching
TL;DR: In this article, the authors investigated diamond scratching at a high speed comparable to that in a grinding process on an ultraprecision grinder and found that an amorphous layer is formed on top of the pristine Si-I phase before the onset of chip formation.
Journal ArticleDOI
New Deformation-Induced Nanostructure in Silicon.
Bo Wang,Bo Wang,Zhenyu Zhang,Keke Chang,Junfeng Cui,Junfeng Cui,Andreas Rosenkranz,Jinhong Yu,Cheng-Te Lin,Guoxin Chen,Ketao Zang,Jun Luo,Nan Jiang,Dongming Guo +13 more
TL;DR: A new deformation-induced nanostructure was observed by transmission electron microscopy, consisting of an amorphous phase, a new tetragonal phase, slip bands, twinning superlattices, and a single crystal, providing new insights for potential applications in transistors, integrated circuits, diodes, solar cells, and energy storage systems.
Journal ArticleDOI
Investigation of strain-induced martensitic transformation in metastable austenite using nanoindentation
TL;DR: In this paper, the authors investigated strain-induced martensitic transformation of metastable austenite by nanoindentation of individual Austenite grains in multi-phase steel using focused ion beam milling.
References
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Journal ArticleDOI
Indentation size effects in crystalline materials: A law for strain gradient plasticity
William D. Nix,Huajian Gao +1 more
TL;DR: In this article, the indentation size effect for crystalline materials can be accurately modeled using the concept of geometrically necessary dislocations, which leads to the following characteristic form for the depth dependence of the hardness: H H 0 1+ h ∗ h where H is the hardness for a given depth of indentation, h, H 0 is a characteristic length that depends on the shape of the indenter, the shear modulus and H 0.
Book
Single Crystal Elastic Constants and Calculated Aggregate Properties. A Handbook
Gene Simmons,Herbert F. Wang +1 more
TL;DR: In this paper, the authors present data on the elastic properties of single crystals collected from the literature through mid-1970 and the elastic property of isotropic aggregates which are calculated according to the schemes of Voigt and Reuss for all materials, and Hashin and Shtrikman for materials with cubic symmetry.
Journal ArticleDOI
Sample dimensions influence strength and crystal plasticity.
TL;DR: Measurements of plastic yielding for single crystals of micrometer-sized dimensions for three different types of metals find that within the tests, the overall sample dimensions artificially limit the length scales available for plastic processes.
Journal ArticleDOI
Mechanism-based strain gradient plasticity— I. Theory
TL;DR: In this paper, a mechanism-based theory of strain gradient plasticity is proposed based on a multiscale framework linking the microscale notion of statistically stored and geometrically necessary dislocations to the mesoscale notion of plastic strain and strain gradient.
Book
Plastic Deformation of Metals
TL;DR: Körber as mentioned in this paper presented a quantitative analysis of the distribution of stress in the transition zone between the rolls and the stock being rolled, based on the results of determinations along the roll-gap of the pressure created at the surface of contact between the tool and the material.
Related Papers (5)
An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments
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Indentation size effects in crystalline materials: A law for strain gradient plasticity
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