What are the Properties of Nanoparticles and How Do They Change with Grain Size?

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SUMMARY

This discussion focuses on the properties of nanoparticles and their dependence on grain size, specifically referencing the Hall-Petch effect, which describes grain size strengthening. Chris Schuh from MIT has conducted significant research on thermodynamically stable nanocrystalline nickel alloys, demonstrating a clear relationship between grain size and indentation hardness. The conversation emphasizes the importance of literature over textbooks for understanding these properties.

PREREQUISITES
  • Understanding of the Hall-Petch effect in materials science
  • Familiarity with nanocrystalline materials and their properties
  • Knowledge of indentation hardness testing methods
  • Basic concepts of thermodynamics as applied to materials
NEXT STEPS
  • Research the Hall-Petch effect and its implications in material strengthening
  • Explore recent publications by Chris Schuh on nanocrystalline nickel alloys
  • Study indentation hardness testing techniques and their relevance to grain size
  • Investigate thermodynamic stability in nanocrystalline materials
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Materials scientists, metallurgists, and researchers interested in the mechanical properties of nanomaterials and their applications in engineering.

shashankm
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can anyone refer me to any site or book where i would get the properties of materials at nano scale and how they change with the change in the grain size?
 
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I wouldn't look towards a book, I would look more towards literature. A good start would be researching grain size strengthening effects noted by Hall and Petch (the Hall-Petch effect).

Chris Schuh from MIT has shown a bunch of recent work on the development of thermodynamically stable nanocrystalline nickel alloys. He's shown pretty conclusively the relationship between grain size and indentation hardness.

Good luck.
 
you could try Dieter, that might help explain things abit. At least give u a basic idea before moving on.
 

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