Tensile fracture of ultrafine grained aluminum 6061 sheets by asymmetric cryorolling for microforming
Tensile fracture of ultrafine grained aluminum 6061 sheets by asymmetric cryorolling for microforming
复制标题
微成型不对称冷冻轧制超细晶粒铝 6061 板材的拉伸断裂
DOI:
10.1177/1056789514538083
复制
发表时间:
2014-05
影响因子:
4.2
通讯作者:
Kong C.
中科院分区:
文献类型:
--
作者:
Yu H.L.;Tieu K.;Lu C.;Lou Y.S.;Liu X.H.;Godbole A.;Kong C.
The size effect on the mechanism of fracture in ultrafine grained sheets is an unsolved problem in microforming. This paper describes a tensile test carried out to study the fracture behavior and the shear fracture angles of both rolled and aged ultrafine grained aluminum 6061 sheets produced by asymmetric cryorolling. A scanning electron microscope was used to observe the fracture surface. The finite element method was used to simulate the tensile test using the uncoupled Cockcroft–Latham and Tresca criteria and the coupled Gurson–Tvergaard–Needleman damage criterion. It was found that the shear fracture angle decreases gradually from 90° to 64° with an increasing number of passes. The results of simulations using the Gurson–Tvergaard–Needleman criterion show trends similar to the experimental ones. The paper also presents a discussion on the fracture mechanism and the size effect during the tensile test.
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影响因子:
4.1
作者:
F. Leckie
通讯作者:
F. Leckie
DOI:
10.1002/9781118562192
发表时间:
2012-05
期刊:
--
影响因子:
--
作者:
K. Saanouni;Pierre Devalan
通讯作者:
K. Saanouni;Pierre Devalan
影响因子:
4.6
作者:
Yu, Hailiang;Lu, Cheng;Tieu, A. Kiet;Godbole, Ajit;Su, Lihong;Sun, Yong;Liu, Mao;Tang, Delin;Kong, Charlie
通讯作者:
Kong, Charlie
影响因子:
3
作者:
Hai-liang Yu;Xiaotao Liu;Xiao-Wu Li
通讯作者:
Hai-liang Yu;Xiaotao Liu;Xiao-Wu Li
影响因子:
5.4
作者:
C. Chow;June Wang
通讯作者:
C. Chow;June Wang