介绍了正电子湮没的试验原理,以及正电子寿命谱和符合多普勒展宽等试验技术.总结了近几年来正电子湮没技术在铝合金时效研究中的应用进展,展示了正电子湮没技术是如何通过对合金时效中微结构变化的研究,获得溶质偏聚动力学及空位-溶质相互作用等重要信息.
参考文献
| [1] | Sedov V L;Teimurazova V A;Berndt K .Interaction of positrons with precipitations in diluted Al-Zn alloy[J].Physics Letters A,1970,33(05):319-320. |
| [2] | Dupasquier A.;de Diego N.;Somoza A.;Folegati P. .Current positron studies of structural modifications in age-hardenable metallic systems[J].Journal of Physics. Condensed Matter,1998(46):10409-10422. |
| [3] | Puska M J;Nieminen R M .Theory of positrons in solids and on solid surfaces[J].Reviews of Modern Physics,1994,66:841-897. |
| [4] | Somoza A;Dupasquier A;Polmear I J et al.Posi-tron-annihilation study of the aging kinetics of AlCu-based alloys 1 Al-Cu-Mg[J].Physical Review B:Condensed Matter,2000,61:14454-14463. |
| [5] | Somoza A;Dupasquier .A Positron studies of solute aggregation in age-hardenable aluminum alloys[J].Journal of Materials Processing Technology,2003,135:83-90. |
| [6] | Dupasquier A;kgel G;Somoza A et al.Studies of light alloys by positron annihilation techniques[J].Acta Materialia,2004,52:4707-4726. |
| [7] | Dlubek G .The solidification of aluminium-zinc alloys[J].Materials Science Forum,1987,13/14:33-49. |
| [8] | Nagai Y;Tang Z;Ohkubo H et al.Elemental analysis of positron affinitive site in materials by coincidence Doppler broadening spectroscopy[J].Radiation Physics and Chemistry,2003,68:381-386. |
| [9] | Somoza A;Dupasquier A;Polmear I J .Positron-annihilation study of the aging kinetics of AlCu-based alloys.2.Ag microalloying[J].Physical Review B:Condensed Matter,2000,61:14464-14469. |
| [10] | Somoza A.;Petkov MP.;Lynn KG.;Dupasquier A. .Stability of vacancies during solute clustering in Al-Cu-based alloys - art. no. 094107[J].Physical Review.B.Condensed Matter,2002(9):4107-0. |
| [11] | Nagai Y;Murayama M;Tang Z et al.Role of vacancy-solute complex in the initial rapid age hardening in an Al-Cu-Mg alloy[J].Acta Materialia,2001,49:913-920. |
| [12] | Nagai Y.;Honma T.;Tang Z.;Hono K.;Hasegawa M. .Coincidence Doppler broadening study of the pre-precipitation stage of an Al-Cu-Mg-Ag alloy[J].Philosophical Magazine.A.Physics of condensed matter, defects and mechanical properties,2002(8):1559-1572. |
| [13] | Honma T;Yanagita S;Hono K et al.Coincidence Doppler broadening and 3DAP study of the pre-cipitation stage of an Al-Li-Cu-Mg-Ag alloy[J].Acta Materialia,2004,52:1997-2003. |
| [14] | Biasini M.;Folegati P.;Riontino G.;Ferro G. .Vacancy-solute aggregates in Al-Cu-Mg alloys studied by positron annihilation techniques - art. no. 092202[J].Physical Review.B.Condensed Matter,2001(9):092202-1-092202-4. |
| [15] | Ferragut R;Somoza A;Dupasquier A et al.On the two-step ageing of a commercial Al-Zn-Mg alloy;a study by positron lifetime spectroscopy[J].Journal of Physics:Condensed Matter,1996,8:8945-8952. |
| [16] | R. FERRAGUT;A. SOMOZA;A. TOLLEY .MICROSTRUCTURAL EVOLUTION OF 70l2 ALLOY DURING THE EARLY STAGES OF ARTIFICIAL AGEING[J].Acta materialia,1999(17):4355-4364. |
| [17] | Abis S;Biasini M;Dupasquier A et al.Positron annihilation study of η'precipitation kinetics in an aluminium alloy[J].Journal of Physics:Condensed Matter,1989,1:3679-3686. |
| [18] | G. Dlubek;P. Lademann;H. Krause;S. Krause;R. Unger .Positron lifetime studies of decomposition in 2024 (Al-Cu-Mg) and 7010 (Al-Zn-Cu-Mg) alloys[J].Scripta materialia,1998(7):893-899. |
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%