Transmission of a screw dislocation across a coherent, non-slipping interface
Transmission of a screw dislocation across a coherent, non-slipping interface
复制标题
螺型位错在相干、非滑移界面上的传递
DOI:
10.1016/j.jmps.2006.11.005
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发表时间:
2007-05
影响因子:
5.3
通讯作者:
Shen, Yao
中科院分区:
文献类型:
--
作者:
Anderson, Peter M.;Shen, Yao
Current research on nanocrystalline metals and nanoscale multilayer thin films suggests extraordinary plastic strength is due to confinement of slip to individual grains or layers. To assess the magnitude of confinement, a Peierls model of slip transmission of a screw dislocation across a coherent, non-slipping interface is presented. The results reflect that large interfacial barriers to transmission are generated by rapid fluctuations in dislocation line energy near the interface due to elastic modulus mismatch, stacking fault energy mismatch, and antiphase boundary energy for transmission into an ordered phase. Coherency stress is predicted to dramatically alter the dislocation core configuration and impart additional strength regardless of the sign. Contributions to strength are not additive due to nonlinear coupling via the dislocation core configuration. The predicted barrier strength for a coherent (001) Cu/Ni interface is comparable to atomistic (EAM) results but larger than estimates from hardness data.
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DOI:
10.1016/0965-9773(93)90159-9
发表时间:
1993-05
期刊:
Nanostructured Materials
影响因子:
--
作者:
C. Pande;R. Masumura;R. Armstrong
通讯作者:
C. Pande;R. Masumura;R. Armstrong
影响因子:
9.4
作者:
Qizhen Li;P. Anderson
通讯作者:
Qizhen Li;P. Anderson
DOI:
10.1007/bf02666659
发表时间:
1989-11-01
期刊:
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
影响因子:
--
作者:
NIX, WD
通讯作者:
NIX, WD
影响因子:
9.1
作者:
X. Tan;Yu‐Lin Shen
通讯作者:
X. Tan;Yu‐Lin Shen
影响因子:
5
作者:
Clemens, BM;Kung, H;Barnett, SA
通讯作者:
Barnett, SA