Paper Title:
Fatigue Fracture Behavior of ARB Processed Aluminum
  Abstract

Fatigue crack propagation behaviors of ultrafine grained (UFG) Al sheets fabricated by the accumulative roll bonding (ARB) process were investigated. The ARB process was carried out up to 6 cycles (equivalent strain, eq.=4.8). The ARB processed sheet had lamellar boundary structure elongated to rolling direction of the sheet. The mean spacing of the boundaries was 182 nm. The tensile strength of the starting Al sheet increased after the 6-cycle of the ARB. Fatigue crack growth tests were performed to clarify the crack growth rate and threshold stress intensity factor range for crack growth (Kth). The fatigue crack profile in the ARB processed sheet differs from that in the starting Al sheet. The Kth of the ARB processed sheet was smaller than that of the starting sheet. The Kth of Al would decreased with decreasing the crack closure phenomena after the 6-cycle of the ARB. The fatigue crack growth rate test shows that the critical load for starting to propagate the fatigue crack and the fatigue crack growth rate decreased by ultrafine grain refinement.

  Info
Periodical
Materials Science Forum (Volumes 654-656)
Main Theme
Edited by
Jian-Feng Nie and Allan Morton
Pages
2479-2482
DOI
10.4028/www.scientific.net/MSF.654-656.2479
Citation
H. Kitahara , T. Horike, M. Tsushida, S. Ando, N. Tsuji, "Fatigue Fracture Behavior of ARB Processed Aluminum", Materials Science Forum, Vols. 654-656, pp. 2479-2482, 2010
Online since
June 2010
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: Hiromoto Kitahara, Nobuhiro Tsuji, Yoritoshi Minamino
Abstract:Martensite transformation of the ultrafine grained (UFG) austenite fabricated by the accumulative roll bonding (ARB) process was studied. The...
913
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
Authors: Hamidreza Jafarian, Ehsan Borhani, Akinobu Shibata, Daisuke Terada, Nobuhiro Tsuji
Abstract:In this paper, martensitic transformation from ultrafine grained (UFG) austenite fabricated by accumulative roll bonding (ARB) process in a...
361
Authors: Kun Xia Wei, Wei Wei, Qing Bo Du, Jing Hu
Micro/Nano Materials
Abstract:Usually the heat treatment in the cyclic ARB passes is indispensable to reduce work-hardening effects and improve interface bonding quality....
993