Is there a critical size in nano grained metals for ductile to brittle transition?

Md Amanul Haque, Taher Saif

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The role of grain size and boundaries in determining the mechanical behavior of metals, such as elasticity and yielding was investigated. A novel micro apparatus that allows uniaxial tensile testing of free standing nano scale metal specimens as thin as 30nm was developed. The stress-strain response of sputter deposited aluminum films with thickness 30-200nm with the corresponding grain size of 10-100nm was measured using the apparatus. The results show that as grain size is reduced from micro scale, a critical dimension is reached when the size is too small for dislocations to exist, but no small enough for grain boundary mechanisms to fully contribute to deformation.

Original languageEnglish (US)
Title of host publicationProceedings of the 3rd ASME Integrated Nanosystems Conference - Design, Synthesis, and Applications
Pages93-94
Number of pages2
Publication statusPublished - Dec 1 2004
Event3rd ASME Integrated Nanosystems Conference - Design, Synthesis, and Applications - Pasadena, CA, United States
Duration: Sep 22 2004Sep 24 2004

Publication series

NameProceedings of the 3rd ASME Integrated Nanosystems Conference - Design, Synthesis, and Applications

Other

Other3rd ASME Integrated Nanosystems Conference - Design, Synthesis, and Applications
CountryUnited States
CityPasadena, CA
Period9/22/049/24/04

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Haque, M. A., & Saif, T. (2004). Is there a critical size in nano grained metals for ductile to brittle transition? In Proceedings of the 3rd ASME Integrated Nanosystems Conference - Design, Synthesis, and Applications (pp. 93-94). [NANO2004-46097] (Proceedings of the 3rd ASME Integrated Nanosystems Conference - Design, Synthesis, and Applications).