Abstract
The interface effect on Young’s modulus was investigated in electro-deposited fully-dense Ni –P alloys with a relatively constant phosphorus content (2– 3 wt%), but with different grain sizes ranging from 4 to 29 nm. Essentially the same Young’s modulus was observed for grain sizes ≥ 18 nm. A noticeable decrease in Young’s modulus was found at grain sizes ≤ 17 nm. The reduction in Young’s modulus was found to correlate well with the increase in all interface contributions. These observations agree with various studies on other fully-dense metals for grain sizes between 5 and 80 nm. Previously reported large decreases in the Young’s modulus were likely caused by the significant amount of porosity in the microstructure.
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The authors would like to thank Shimadzu Corporation for their generous donation of the nanoindenter, and Dr. G. Hibbard from Integran Technology Inc. for his contributions. Financial support from the Natural Sciences and Engineering Research Council of Canada and the Ontario Graduate Scholarship is gratefully acknowledged.
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© 2003 Carl Hanser Verlag, München
Articles in the same Issue
- Frontmatter
- Articles/Aufsätze
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- Interface stress in nanocrystalline materials
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- Annealing treatments to enhance thermal and mechanical stability of ultrafine-grained metals produced by severe plastic deformation
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- Simulations of the inert gas condensation processes
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- Alloying reactions in nanostructured multilayers during intense deformation
- Impact of grain boundary character on grain boundary kinetics
- Nanostructured (CoxFe1– x)3–yO4 spinel – mechanochemical synthesis
- Nanostructure formation and thermal stability of nanophase materials prepared by mechanical means
- Low-temperature plasma nitriding of AISI 304 stainless steel with nano-structured surface layer
- New materials from non-intuitive composite effects
- On the line defects associated with grain boundary junctions
- Young’s modulus in nanostructured metals
- The kinetics of phase formation in an ultra-thin nanoscale layer
- Notifications/Mitteilungen
- Personal/Personelles
- News
- DGM Events
Articles in the same Issue
- Frontmatter
- Articles/Aufsätze
- From atomistics to macro-behavior: structural superplasticity in micro- and nano-crystalline materials
- Interface stress in nanocrystalline materials
- Microstructure, frequency and localisation of pseudo-elastic fatigue strain in NiTi
- Intercrystalline defects and some properties of electrodeposited nanocrystalline nickel and its alloys
- Positrons as chemically sensitive probes in interfaces of multicomponent complex materials: Nanocrystalline Fe90Zr7B3
- Annealing treatments to enhance thermal and mechanical stability of ultrafine-grained metals produced by severe plastic deformation
- Nanoceramics by chemical vapour synthesis
- Deformation mechanism and inverse Hall – Petch behavior in nanocrystalline materials
- Simulations of the inert gas condensation processes
- Unconventional deformation mechanism in nanocrystalline metals?
- Alloying reactions in nanostructured multilayers during intense deformation
- Impact of grain boundary character on grain boundary kinetics
- Nanostructured (CoxFe1– x)3–yO4 spinel – mechanochemical synthesis
- Nanostructure formation and thermal stability of nanophase materials prepared by mechanical means
- Low-temperature plasma nitriding of AISI 304 stainless steel with nano-structured surface layer
- New materials from non-intuitive composite effects
- On the line defects associated with grain boundary junctions
- Young’s modulus in nanostructured metals
- The kinetics of phase formation in an ultra-thin nanoscale layer
- Notifications/Mitteilungen
- Personal/Personelles
- News
- DGM Events