Exploring dendrite coherency with the discrete element method
Exploring dendrite coherency with the discrete element method
复制标题
用离散元方法探索枝晶相干性
DOI:
10.1016/j.actamat.2011.11.042
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发表时间:
2012
期刊:
影响因子:
9.4
通讯作者:
Yuan L
中科院分区:
文献类型:
--
作者:
Yuan L
The particulate discrete element method (DEM) is used to simulate crystal rearrangement during equiaxed solidification of Al alloys for a range of morphologies across the globular to equiaxed-dendritic transition. It is shown that DEM is able to capture the key experimental results reported in past dendrite coherency studies, namely: the marked increase in resistance to shear at a critical solid fraction, the influence of crystal morphology on dendrite coherency, and that dendrite coherency marks the onset of dilatancy. Dendrite coherency is shown to be the lowest solid fraction at which long-range interconnectivity in the force chain network develops during shear. It is further found that dendrite coherency depends on both the internal solid fraction within dendrite envelopes and the mean shape of envelopes at coherency. The potential to extend DEM to the simulation of mushy-zone mechanics in casting problems is then discussed.
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DOI:
10.1007/s11661-001-0110-1
发表时间:
2001
期刊:
Metallurgical and Materials Transactions A
影响因子:
--
作者:
N. Veldman;A. Dahle;D. StJohn;L. Arnberg
通讯作者:
N. Veldman;A. Dahle;D. StJohn;L. Arnberg
DOI:
10.1088/0965-0393/18/5/055008
发表时间:
2010-07-01
影响因子:
1.8
作者:
Yuan, Lang;Lee, Peter D.
通讯作者:
Lee, Peter D.
影响因子:
5.2
作者:
TSUJI, Y;KAWAGUCHI, T;TANAKA, T
通讯作者:
TANAKA, T
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
A. Dahle;L. Arnberg
通讯作者:
L. Arnberg
影响因子:
9.4
作者:
Gourlay, C. M.;Dahle, A. K.;Yasuda, H.
通讯作者:
Yasuda, H.