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 language | English (US) |
|---|---|
| Title of host publication | Proceedings of the 3rd ASME Integrated Nanosystems Conference - Design, Synthesis, and Applications |
| Pages | 93-94 |
| Number of pages | 2 |
| State | Published - 2004 |
| Event | 3rd ASME Integrated Nanosystems Conference - Design, Synthesis, and Applications - Pasadena, CA, United States Duration: Sep 22 2004 → Sep 24 2004 |
Other
| Other | 3rd ASME Integrated Nanosystems Conference - Design, Synthesis, and Applications |
|---|---|
| Country | United States |
| City | Pasadena, CA |
| Period | 9/22/04 → 9/24/04 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
Is there a critical size in nano grained metals for ductile to brittle transition? / Haque, Aman; Saif, M Taher A.
Proceedings of the 3rd ASME Integrated Nanosystems Conference - Design, Synthesis, and Applications. 2004. p. 93-94 NANO2004-46097.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Is there a critical size in nano grained metals for ductile to brittle transition?
AU - Haque, Aman
AU - Saif, M Taher A
PY - 2004
Y1 - 2004
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=21244489636&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=21244489636&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:21244489636
SN - 0791841774
SN - 9780791841778
SP - 93
EP - 94
BT - Proceedings of the 3rd ASME Integrated Nanosystems Conference - Design, Synthesis, and Applications
ER -