Paper Title:
Microstructure and Mechanical Properties of Nanostructured Metals Produced by High Strain Deformation
  Abstract

Deformation structures produced by high pressure torsion (HPT) and accumulative roll-bonding (ARB) were characterized by transmission electron microscopy and electron backscatter diffraction, and the mechanical properties of the ARB samples were determined by uniaxial tensile testing. The structural evolution during HPT in high purity nickel has been examined and an extended lamellar boundary structure was observed at high strains. For ARB samples deformed to high strains, an almost similar structural morphology has been observed in both interstitial free steel and in commercial purity aluminum, whereas a relatively equiaxed structural morphology was observed in high purity aluminum samples. In all samples, both deformed by HPT and ARB, the deformation structures were composed of a large fraction of high-angle boundaries, together with low-angle boundaries and isolated dislocations between the boundaries. Common characteristics have been identified in the mechanical behavior of the ARB samples, namely a very high strength, a small uniform elongation and a relatively large post-uniform elongation after necking. For HPT and ARB the structural morphology and structural parameters are compared, and for the ARB samples structure-property relationships are also discussed.

  Info
Periodical
Edited by
Xiaozhou Liao and Yonghao Zhao
Pages
135-146
DOI
10.4028/www.scientific.net/MSF.579.135
Citation
N. Kamikawa, H. W. Zhang, X. Huang, N. Hansen, "Microstructure and Mechanical Properties of Nanostructured Metals Produced by High Strain Deformation", Materials Science Forum, Vol. 579, pp. 135-146, 2008
Online since
April 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Nobuhiro Tsuji, Naoya Kamikawa, Yoritoshi Minamino
Abstract:Ultra low-carbon interstitial free (IF) steel having ferrite (b.c.c.) single phase was deformed to various equivalent strains ranging from...
341
Authors: Bo Long Li, N. Shigeiri, Nobuhiro Tsuji, Yoritoshi Minamino
Abstract:An oxygen free high conductivity (OFHC) copper (99.99%) was intensely deformed by the accumulative roll-bonding (ARB) process up to...
615
Authors: Bo Long Li, Nobuhiro Tsuji, Yoritoshi Minamino
Abstract:A 36mass% Ni austenitic steel was deformed to equivalent strains of 0.8 to 4.8 by the accumulative roll-bonding (ARB) process at 500°C, with...
73
Authors: Seong Hee Lee, Seung Zeon Han, Cha Yong Lim
Abstract:Accumulative roll-bonding (ARB) process was applied to an oxygen free copper for improvement of the mechanical properties via ultra grain...
239
Authors: Seong Hee Lee, Tetsuo Sakai, C.H. Lee, Yong Ho Choa
Abstract:Nano-structured aluminum was fabricated by accumulative roll-bonding (ARB) process using different rolling methods. One is the ARB using...
327