Quantification of internal dislocation density using scanning transmission electron microscopy in ultrafine grained pure aluminium fabricated by severe plastic deformation
作者： Yoji Miyajima , Masatoshi Mitsuhara , Satoshi Hata , Hideharu Nakashima , Nobuhiro Tsuji
DOI: 10.1016/J.MSEA.2010.09.058
关键词:
摘要: Abstract Dislocation density within ultrafine grains in severely deformed aluminium was evaluated by the scanning transmission electron microscopy. The values were around 10 14 m −2 commercial pure samples with equivalent strain up to 10. obtained dislocation densities correspond strength between 55 MPa and 70 MPa according Bailey–Hirsch relationship.
elsevier.com
sci-hub.se 参考文章(14)
Yoshinobu Nakada, Scanning Transmission Electron Microscopy and Electron Energy Loss Spectroscopy at 1,000kV Journal of Electron Microscopy. ,vol. 34, pp. 430- 434 ,(1985)
Y. Saito, H. Utsunomiya, N. Tsuji, T. Sakai, Novel ultra-high straining process for bulk materials—development of the accumulative roll-bonding (ARB) process Acta Materialia. ,vol. 47, pp. 579- 583 ,(1999) , 10.1016/S1359-6454(98)00365-6
Masaharu Kato, Thermally activated dislocation depinning at a grain boundary in nanocrystalline and ultrafine-grained materials Materials Science and Engineering: A. ,vol. 516, pp. 276- 282 ,(2009) , 10.1016/J.MSEA.2009.03.035
Xiaoxu Huang, Niels Hansen, Nobuhiro Tsuji, Hardening by Annealing and Softening by Deformation in Nanostructured Metals Science. ,vol. 312, pp. 249- 251 ,(2006) , 10.1126/SCIENCE.1124268
Masaki Tanaka, Kenji Higashida, Kenji Kaneko, Satoshi Hata, Masatoshi Mitsuhara, Crack tip dislocations revealed by electron tomography in silicon single crystal Scripta Materialia. ,vol. 59, pp. 901- 904 ,(2008) , 10.1016/J.SCRIPTAMAT.2008.06.042
R. K. Ham, The determination of dislocation densities in thin films Philosophical Magazine. ,vol. 6, pp. 1183- 1184 ,(1961) , 10.1080/14786436108239679
Masaki Tanaka, Masaki Honda, Masatoshi Mitsuhara, Satoshi Hata, Kenji Kaneko, Kenji Higashida, Three-Dimensional Observation of Dislocations by Electron Tomography in a Silicon Crystal Materials Transactions. ,vol. 49, pp. 1953- 1956 ,(2008) , 10.2320/MATERTRANS.MAW200828
A. Azushima, R. Kopp, A. Korhonen, D.Y. Yang, F. Micari, G.D. Lahoti, P. Groche, J. Yanagimoto, N. Tsuji, A. Rosochowski, A. Yanagida, Severe Plastic Deformation (SPD) Processes for Metals Cirp Annals-manufacturing Technology. ,vol. 57, pp. 716- 735 ,(2008) , 10.1016/J.CIRP.2008.09.005
Niels Hansen, Robert F. Mehl, Award Medalist, New discoveries in deformed metals Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 32, pp. 2917- 2935 ,(2001) , 10.1007/S11661-001-0167-X
X. Huang, N. Kamikawa, N. Hansen, Strengthening mechanisms in nanostructured aluminum Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 483, pp. 102- 104 ,(2008) , 10.1016/J.MSEA.2006.10.173