Investigation of specimen size effects by in-situ microcompression of equal channel angular pressed copper
Abstract
Here, micropillar compression testing was implemented on Equal Channel Angular Pressed copper samples ranging from 200 nm to 10 µm in side length in order to measure the mechanical properties yield strength, first load drop during plastic deformation at which there was a subsequent stress decrease with increasing strain, work hardening, and strain hardening exponent. Several micropillars containing multiple grains were investigated in a 200 nm grain sample. The effective pillar diameter to grain size ratios, D/d, were measured to be between 1.9 and 27.2. Specimens having D/d ratios between 0.2 and 5 were investigated in a second sample that was annealed at 200 °C for 2 h with an average grain size of 1.3 µm. No yield strength or elastic modulus size effects were observed in specimens in the 200 nm grain size sample. However work hardening increases with a decrease in critical ratios and first stress drops occur at much lower stresses for specimens with D/d ratios less than 5. For comparison, bulk tensile testing of both samples was performed, and the yield strength values of all micropillar compression tests for the 200 nm grained sample are in good agreement with the yield strength values of the tensilemore »
- Authors:
-
- Univ. of California, Berkeley, CA (United States)
- Ufa State Aviation Technical Univ., Ufa (Russia); Saint Petersburg State Univ., Saint Petersburg (Russia)
- Myongji Univ., Yongin (Republic of Korea)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1411693
- Report Number(s):
- LLNL-JRNL-736666
Journal ID: ISSN 0921-5093
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
- Additional Journal Information:
- Journal Volume: 649; Journal Issue: C; Journal ID: ISSN 0921-5093
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Microcompression tests; Scaling effects; Mechanical properties; Grain size
Citation Formats
Howard, C., Frazer, D., Lupinacci, A., Parker, S., Valiev, R. Z., Shin, C., William Choi, B., and Hosemann, P. Investigation of specimen size effects by in-situ microcompression of equal channel angular pressed copper. United States: N. p., 2015.
Web. doi:10.1016/j.msea.2015.09.110.
Howard, C., Frazer, D., Lupinacci, A., Parker, S., Valiev, R. Z., Shin, C., William Choi, B., & Hosemann, P. Investigation of specimen size effects by in-situ microcompression of equal channel angular pressed copper. United States. https://doi.org/10.1016/j.msea.2015.09.110
Howard, C., Frazer, D., Lupinacci, A., Parker, S., Valiev, R. Z., Shin, C., William Choi, B., and Hosemann, P. Wed .
"Investigation of specimen size effects by in-situ microcompression of equal channel angular pressed copper". United States. https://doi.org/10.1016/j.msea.2015.09.110. https://www.osti.gov/servlets/purl/1411693.
@article{osti_1411693,
title = {Investigation of specimen size effects by in-situ microcompression of equal channel angular pressed copper},
author = {Howard, C. and Frazer, D. and Lupinacci, A. and Parker, S. and Valiev, R. Z. and Shin, C. and William Choi, B. and Hosemann, P.},
abstractNote = {Here, micropillar compression testing was implemented on Equal Channel Angular Pressed copper samples ranging from 200 nm to 10 µm in side length in order to measure the mechanical properties yield strength, first load drop during plastic deformation at which there was a subsequent stress decrease with increasing strain, work hardening, and strain hardening exponent. Several micropillars containing multiple grains were investigated in a 200 nm grain sample. The effective pillar diameter to grain size ratios, D/d, were measured to be between 1.9 and 27.2. Specimens having D/d ratios between 0.2 and 5 were investigated in a second sample that was annealed at 200 °C for 2 h with an average grain size of 1.3 µm. No yield strength or elastic modulus size effects were observed in specimens in the 200 nm grain size sample. However work hardening increases with a decrease in critical ratios and first stress drops occur at much lower stresses for specimens with D/d ratios less than 5. For comparison, bulk tensile testing of both samples was performed, and the yield strength values of all micropillar compression tests for the 200 nm grained sample are in good agreement with the yield strength values of the tensile tests.},
doi = {10.1016/j.msea.2015.09.110},
journal = {Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing},
number = C,
volume = 649,
place = {United States},
year = {Wed Sep 30 00:00:00 EDT 2015},
month = {Wed Sep 30 00:00:00 EDT 2015}
}
Web of Science
Works referenced in this record:
The Influence of Size on the Brittle Strength of Steel
journal, March 1947
- Davidenkov, N.; Shevandin, E.; Wittmann, F.
- Journal of Applied Mechanics, Vol. 14, Issue 1
Approaching theoretical strengths by synergistic internal and external size refinement
journal, March 2013
- Warthi, Nilesh; Ghosh, Pradipta; Chokshi, Atul H.
- Scripta Materialia, Vol. 68, Issue 5
A methodology to investigate size scale effects in crystalline plasticity using uniaxial compression testing
journal, July 2005
- Uchic, Michael D.; Dimiduk, Dennis M.
- Materials Science and Engineering: A, Vol. 400-401
Plasticity in small-sized metallic systems: Intrinsic versus extrinsic size effect
journal, August 2011
- Greer, Julia R.; De Hosson, Jeff Th. M.
- Progress in Materials Science, Vol. 56, Issue 6
In situ nanocompression testing of irradiated copper
journal, June 2011
- Kiener, D.; Hosemann, P.; Maloy, S. A.
- Nature Materials, Vol. 10, Issue 8
Proton irradiation creep of thin foil specimens of type 304 austenitic stainless steel and the thickness effects on their mechanical properties
journal, May 1984
- Igata, Naohiro; Miyahara, Kazuya; Ohno, Kohichi
- Journal of Nuclear Materials, Vol. 122, Issue 1-3
The effects of grain and specimen sizes on mechanical properties of type 316 austenitic stainless steel
journal, August 1985
- Miyahara, K.; Tada, C.; Uda, T.
- Journal of Nuclear Materials, Vol. 133-134
Specimen size effects on mechanical properties of 14 MeV neutron irradiated metals
journal, July 1988
- Kohyama, A.; Matsui, H.; Abe, K.
- Journal of Nuclear Materials, Vol. 155-157
Specimen size effects on tensile properties of neutron-irradiated steels
journal, March 1991
- Kohyama, A.; Hamada, K.; Matsui, H.
- Journal of Nuclear Materials, Vol. 179-181
Specimen size effects on the tensile properties of JPCA and JFMS
journal, December 2000
- Kohno, Yutaka; Kohyama, Akira; Hamilton, Margaret L.
- Journal of Nuclear Materials, Vol. 283-287
Evaluation of Irradiation Effects on Fracture Strength of Silicon Carbide using Micropillar Compression Tests
journal, September 2012
- Shin, C.; Jin, H. -h.; Sung, H.
- Experimental Mechanics, Vol. 53, Issue 4
Development and testing of microcompression for post irradiation characterization of ODS steels
journal, January 2014
- Shin, Chansun; Lim, Sangyeob; Jin, Hyung-ha
- Journal of Nuclear Materials, Vol. 444, Issue 1-3
Effect of specimen thickness on mechanical properties of polycrystalline aggregates with various grain sizes
journal, May 1979
- Miyazaki, Shuichi; Shibata, Kenji; Fujita, Hiroshi
- Acta Metallurgica, Vol. 27, Issue 5
TEM study of dislocation patterns in near-surface and core regions of deformed nickel polycrystals with few grains across the cross section
journal, January 2010
- Keller, C.; Hug, E.; Retoux, R.
- Mechanics of Materials, Vol. 42, Issue 1
On the origin of the stress decrease for nickel polycrystals with few grains across the thickness
journal, January 2009
- Keller, C.; Hug, E.; Chateigner, D.
- Materials Science and Engineering: A, Vol. 500, Issue 1-2
Size-induced weakening and grain boundary-assisted deformation in 60 nm grained Ni nanopillars
journal, January 2011
- Jang, Dongchan; Greer, Julia R.
- Scripta Materialia, Vol. 64, Issue 1
Size-Dependent Deformation of Nanocrystalline Pt Nanopillars
journal, February 2012
- Gu, X. Wendy; Loynachan, Colleen N.; Wu, Zhaoxuan
- Nano Letters, Vol. 12, Issue 12
Yield stress influenced by the ratio of wire diameter to grain size – a competition between the effects of specimen microstructure and dimension in micro-sized polycrystalline copper wires
journal, September 2012
- Yang, B.; Motz, C.; Rester, M.
- Philosophical Magazine, Vol. 92, Issue 25-27
Size effects in miniaturized polycrystalline FCC samples: Strengthening versus weakening
journal, November 2006
- Geers, M. G. D.; Brekelmans, W. A. M.; Janssen, P. J. M.
- International Journal of Solids and Structures, Vol. 43, Issue 24
Size effect on the tensile strength of fine-grained copper
journal, December 2008
- Molotnikov, A.; Lapovok, R.; Davies, C. H. J.
- Scripta Materialia, Vol. 59, Issue 11
An experimental assessment of grain size effects in the uniaxial straining of thin Al sheet with a few grains across the thickness
journal, March 2006
- Janssen, P. J. M.; de Keijser, Th. H.; Geers, M. G. D.
- Materials Science and Engineering: A, Vol. 419, Issue 1-2
Influence of specimen dimensions and strain measurement methods on tensile stress–strain curves
journal, November 2009
- Zhao, Y. H.; Guo, Y. Z.; Wei, Q.
- Materials Science and Engineering: A, Vol. 525, Issue 1-2
Influence of specimen dimensions on the tensile behavior of ultrafine-grained Cu
journal, September 2008
- Zhao, Y.; Guo, Y.; Wei, Q.
- Scripta Materialia, Vol. 59, Issue 6
Deformation behaviour of ultra-fine-grained copper
journal, July 1994
- Valiev, R. Z.; Kozlov, E. V.; Ivanov, Yu. F.
- Acta Metallurgica et Materialia, Vol. 42, Issue 7
Structure and mechanical properties of ultrafine-grained metals
journal, August 1997
- Valiev, Ruslan Z.
- Materials Science and Engineering: A, Vol. 234-236
Principle of equal-channel angular pressing for the processing of ultra-fine grained materials
journal, July 1996
- Iwahashi, Yoshinori; Wang, Jingtao; Horita, Zenji
- Scripta Materialia, Vol. 35, Issue 2
Observations and issues on mechanisms of grain refinement during ECAP process
journal, October 2000
- Zhu, Yuntian Theodore; Lowe, Terry C.
- Materials Science and Engineering: A, Vol. 291, Issue 1-2
An investigation of ductility and microstructural evolution in an Al−3% Mg alloy with submicron grain size
journal, November 1993
- Wang, Jingtao; Horita, Zenji; Furukawa, Minoru
- Journal of Materials Research, Vol. 8, Issue 11
The relation between load and penetration in the axisymmetric boussinesq problem for a punch of arbitrary profile
journal, May 1965
- Sneddon, Ian N.
- International Journal of Engineering Science, Vol. 3, Issue 1
Testing Thin Films by Microcompression: Benefits and Limits
journal, July 2008
- Wörgötter, H.; Kiener, D.; Purswani, J. M.
- BHM Berg- und Hüttenmännische Monatshefte, Vol. 153, Issue 7
Influence of grain boundaries on the deformation resistance: insights from an investigation of deformation kinetics and microstructure of copper after predeformation by ECAP
journal, December 2013
- Bach, J.; Liebig, J. P.; Höppel, H. W.
- Philosophical Magazine, Vol. 93, Issue 35
Superior Strength in Ultrafine-Grained Materials Produced by SPD Processing
journal, January 2014
- Valiev, Ruslan Z.
- MATERIALS TRANSACTIONS, Vol. 55, Issue 1
Observations of unique plastic behavior in micro-pillars of an ultrafine-grained alloy
journal, September 2012
- Chinh, Nguyen Q.; Győri, Tivadar; Valiev, Ruslan Z.
- MRS Communications, Vol. 2, Issue 3
Size effect on strength and strain hardening of small-scale [111] nickel compression pillars
journal, August 2008
- Frick, C. P.; Clark, B. G.; Orso, S.
- Materials Science and Engineering: A, Vol. 489, Issue 1-2
Source-controlled yield and hardening of Cu(100) studied by in situ transmission electron microscopy
journal, February 2011
- Kiener, D.; Minor, A. M.
- Acta Materialia, Vol. 59, Issue 4
Size effects in the deformation of sub-micron Au columns
journal, November 2006
- Volkert, C. A.; Lilleodden, E. T.
- Philosophical Magazine, Vol. 86, Issue 33-35
Nanoscale gold pillars strengthened through dislocation starvation
journal, June 2006
- Greer, Julia R.; Nix, William D.
- Physical Review B, Vol. 73, Issue 24
Specimen size effects on the weakening of a bulk metastable austenitic alloy
journal, January 2015
- Shin, Chansun; Lim, Sangyeob; Jin, Hyung-ha
- Materials Science and Engineering: A, Vol. 622
Works referencing / citing this record:
Thickness-related synchronous increase in strength and ductility of ultrafine-grained pure aluminum sheets
journal, November 2019
- Yan, Ying; Zhang, Guo-qiang; Chen, Li-jia
- International Journal of Minerals, Metallurgy and Materials, Vol. 26, Issue 11