采用分子动力学模拟了Fe-1.95％ Cu-1.95％ Ni合金在823 K下的时效过程.结果表明:在Fe-Cu-Ni合金中,Cu和Ni之间存在一种相互促进扩散相互促进析出的协同作用；Cu、Ni的扩散过程都存在三个扩散速率不同的阶段,分别为自由迁移形成团簇的过程,溶质团簇的不断形成过程和团簇的长大过程.
参考文献
| [1] | Odette G R;Wirth B D;Bacon D J et al.Multiscalemultiphysics modeling of radiation-damaged materials:Ebrittlement of pressure-vessel steels[J].MRS Bulletin,2001,26(03):176-181. |
| [2] | 周邦新,王均安,刘庆东,刘文庆,王伟,林民东,徐刚,楚大锋.Ni对RPV模拟钢中富Cu原子团簇析出的影响[J].中国材料进展,2011(05):1-6. |
| [3] | B. Acosta;L. Debarberis;F. Sevini .Cu effects on radiation embrittlement of Ni-containing complex model alloys and the related potentials of the thermoelectric method[J].NDT & E international: Independent nondestructive testing and evaluation,2004(4):321-324. |
| [4] | F. Bergner;M. Lambrecht;A. Ulbricht;A. Almazouzi .Comparative small-angle neutron scattering study of neutron-irradiated Fe, Fe-based alloys and a pressure vessel steel[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2010(2/3):129-136. |
| [5] | Nagai Y;Takadate K;Tang Z et al.Positron annihilation study of vacancy-solute complex evolution in Fe-based allws[J].Physical Review B,2003,67(22):224202-224207. |
| [6] | Miller MK;Sokolov MA;Nanstad RK;Russell KF .APT characterization of high nickel RPV steels[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2006(1/3):187-196. |
| [7] | Pareige PJ.;Miller MK.;Russell KF. .APFIM STUDIES OF THE PHASE TRANSFORMATIONS IN THERMALLY AGED FERRITIC FECUNI ALLOYS - COMPARISON WITH AGING UNDER NEUTRON IRRADIATION[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,1996(0):362-369. |
| [8] | 叶倩,赵世金.Fe基合金连续冷却相变的分子动力学模拟[J].上海金属,2012(03):9-12. |
| [9] | Gao N;Wei K F;Zhang S X et al.The energy state and phase transition of cu clusters in bcc-Fe studied by a molecular dynamics simulation[J].Chinese Phvsics Letters,2012,29(09):096102-096105. |
| [10] | Osetsky YN;Serra A .Study of copper precipitates in alpha-iron by computer simulation .3. The evolution of vacancies within precipitates[J].Philosophical Magazine.A.Physics of condensed matter, defects and mechanical properties,1997(4):1097-1115. |
| [11] | Al-Motasem, A.T.;Posselt, M.;Bergner, F. .Nanoclusters in bcc-Fe containing vacancies, copper and nickel: Structure and energetics[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2011(1/3):215-222. |
| [12] | Plimpton S .Fast parallel algorithms for short-range molecular dynamics[J].Journal of Computational Physics,1995,117(01):1-44. |
| [13] | Bonny G;Pasianot R C;Castin N et al.Ternary Fe-Cu-Ni many-body potential to model reactor pressure vessel steels:First validation by simulated thermal annealing[J].Philosophical Magazine,2009,89(34-36):3531-3546. |
| [14] | Miller M K.Atom probe tomography:Analysis at the atomic level[M].New York:Kluwer Academic Plenum Publishers,2000:158. |
| [15] | Marian J;Wirth BD;Odette GR;Perlado JM .Cu diffusion in alpha-Fe: determination of solute diffusivities using atomic-scale simulations[J].Computational Materials Science,2004(3/4):347-367. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%