Journal ArticleDOI
Indentation size effect in nanohardness
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TLDR
In this article, a phenomenological approach was used to describe the dependence of nanohardness H (P ) and H ( h ) on the indenter displacement of h by simple equations.About:
This article is published in Acta Materialia.The article was published on 2011-12-01. It has received 123 citations till now. The article focuses on the topics: Indentation & Indentation hardness.read more
Citations
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Development of a new high entropy alloy for wear resistance: FeCoCrNiW0.3 and FeCoCrNiW0.3 + 5 at.% of C
TL;DR: In this paper, a new high entropy alloy (HEA) was synthesized using a predictive method recently developed, which was compared to that of a benchmark commercial alloys (Stellite®6) as wear resistance material for coating automotive engine valves.
Journal ArticleDOI
Effect of laser scanning speed on a Ti-45Al-2Cr-5Nb alloy processed by selective laser melting: Microstructure, phase and mechanical properties
TL;DR: In this paper, a comprehensive study on the laser scanning speed on the microstructure development, phase evolution and nanohardness of a TiAl alloy, processed by selective laser melting (SLM), is presented.
Journal ArticleDOI
Multiscale mechanical performance and corrosion behaviour of plasma sprayed AlCoCrFeNi high-entropy alloy coatings
Ashok Meghwal,Ameey Anupam,Ameey Anupam,Vladimir Luzin,Vladimir Luzin,Christiane Schulz,Colin Hall,B.S. Murty,B.S. Murty,Ravi Sankar Kottada,Christopher C. Berndt,Andrew Siao Ming Ang +11 more
TL;DR: In this paper, equi-atomic AlCoCrFeNi HEA coatings were synthesized via atmospheric plasma spray (APS) using mechanically alloyed feedstock, and a correlation between microstructure and mechanical properties in terms of both hardness and wear were established at multiscale levels.
Journal ArticleDOI
A comparative study on the nanoindentation behavior, wear resistance and in vitro biocompatibility of SLM manufactured CP-Ti and EBM manufactured Ti64 gyroid scaffolds.
Arash Ataee,Yuncang Li,Cuie Wen +2 more
TL;DR: The present study investigates the nanoindentation behavior, wear resistance and in vitro biocompatibility of SLM manufactured CP-Ti and EBM manufactured Ti64 gyroid scaffolds and the results were compared to those of casting CP- Ti.
Journal ArticleDOI
Nanoindentation based properties of Inconel 718 at elevated temperatures: A comparison of conventional versus additively manufactured samples
Hao Wang,Abhijeet Dhiman,Halsey E. Ostergaard,Yang Zhang,Thomas Siegmund,Jamie J. Kruzic,Vikas Tomar +6 more
TL;DR: In this article, temperature dependent mechanical properties of conventional and additive manufactured Inconel 718 (IN718) after solution and aging (SA) heat treatment were measured at room temperature, 350°C, and 650 °C.
References
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Journal ArticleDOI
An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments
Warren C. Oliver,George M. Pharr +1 more
TL;DR: In this paper, the authors used a Berkovich indenter to determine hardness and elastic modulus from indentation load-displacement data, and showed that the curve of the curve is not linear, even in the initial stages of the unloading process.
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
The Hardness of Metals
TL;DR: Hardness measurements with conical and pyramidal indenters as mentioned in this paper have been used to measure the area of contact between solids and the hardness of ideal plastic metals. But they have not yet been applied to the case of spherical indenters.
Journal ArticleDOI
Some geometrical relations in dislocated crystals
TL;DR: In this article, the authors show that the trajectories of the deformed glide planes (the c-axes in hexagonal metals) are straight lines, and that the lattice becomes curved when a single crystal deforms by double gliding.
Journal ArticleDOI
A phenomenological theory for strain gradient effects in plasticity
TL;DR: In this paper, a strain gradient theory of plasticity is introduced, based on the notion of statistically stored and geometrically necessary dislocations, which fits within the general framework of couple stress theory and involves a single material length scale l.
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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Measurement of hardness and elastic modulus by instrumented indentation: Advances in understanding and refinements to methodology
Warren C. Oliver,George M. Pharr +1 more