采用光学显微镜(OM)、扫描电镜(SEM)和XRD物相定性分析研究了添加微量Sc和Er对Al-Cu-Mg系合金铸态组织的影响以及作用机制.结果表明:Er,Sc能不同程度细化合金铸态组织.合金中添加Sc元素细化合金铸态组织的机制为凝固时形成的均匀分布的Al3(ScxZr1-x)质点成为αAl结晶时理想的异质核心,起到显著的晶粒细化作用.Er在合金中主要以Al8Cu4Er分布于晶界,并没有观察到Er和Zr元素的交互作用；凝固过程中,Er元素聚集在固液界面前沿,增大了凝固前沿的液相成分过冷度,抑制枝晶生长,从而细化晶粒.
参考文献
| [1] | YIN Zhi-min;JIANG Feng;PAN Qing-lin;GUO Fei-yue;ZHU Da-peng;SONG Lian-peng;ZEN Yu;WANG Tao .Microstructures and mechanical properties of Al-Mg and Al-Zn-Mg based alloys containing minor scandium and zirconium[J].Transactions of Nonferrous Metals Society of China,2003(3):515-520. |
| [2] | B. Forbord;W. Lefebvre;F. Danoix;H. Hallem;K. Marthinsen .Three dimensional atom probe investigation on the formation of Al_3(Sc,Zr)-dispersoids in aluminium alloys[J].Scripta materialia,2004(4):333-337. |
| [3] | KAMARDINKIN A N;DOBATKINA T V;ROSTOVA T D.Isothermal sections of the A1-Sc-Zr system at 550 and 600℃ in the region enriched in aluminum[J].Russian Metallurgy,1991(02):216-218. |
| [4] | KHARAKTEROVA M L;ESKIN D G;TOROPOVA L S .Precipitation hardening in ternary alloys of the Al-Sc-Cu and Al-Sc-Si systems[J].Acta Metallurgica Et Materialia,1994,42(07):2285-2290. |
| [5] | Alexander Pisch;Joachim Grobner;Rainer Schmid-Fetzer .Application of computational thermochemistry to Al and Mg alloy processing with Sc additions[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2000(1/2):123-129. |
| [6] | GSCHNEIDER K A;CALDERWOOD Jr F W .Al-Sc system[J].Bulletin of Alloy Phase Diagrams,1989,10(01):34. |
| [7] | 柏振海,罗兵辉.钪在铝及铝合金中的作用[J].材料导报,2003(07):6-9. |
| [8] | 柏振海,罗兵辉.钪在铝及铝合金中的作用[J].材料导报,2003(07):6-9. |
| [9] | YELAGIN V I;ZAKHAROV V V;PAVLENKO S G et al.Influence of zirconium additions on ageing of Al-Sc alloys[J].Physics of Metals and Metallography (English translation of Fizika Metallovi Metallovedenie),1985,60(01):88-92. |
| [10] | J. Royset;N. Ryum .Scandium in aluminium alloys[J].International Materials Reviews,2005(1):19-44. |
| [11] | VILLAR P;PRINCE A;OKAMOTO H.Handbook of ternary alloy phase diagrams[M].Materials Park,OH:ASM International,1994 |
| [12] | Kun YU,Songrui LI,Wenxian LI.Effect of Trace Sc and Zr on the Mechanical Properties and Microstructure of Al Alloy 2618[J].材料科学技术学报（英文版）,2000(04):416-420. |
| [13] | Norman AF.;Hyde K.;Costello F.;Thompson S.;Birley S.;Prangnell PB. .Examination of the effect of Sc on 2000 and 7000 series aluminium alloy castings: for improvements in fusion welding[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):188-198. |
| [14] | 杨军军,聂祚仁,金头男,阮海琼,左铁镛.稀土铒在Al-Zn-Mg合金中的存在形式与细化机理[J].中国有色金属学报,2004(04):620-626. |
| [15] | 杨军军,聂祚仁,金头男,阮海琼,左铁镛.稀土铒在Al-Zn-Mg合金中的存在形式与细化机理[J].中国有色金属学报,2004(04):620-626. |
| [16] | 杨军军,聂祚仁,金头男,徐国富,付静波,左铁镛.稀土元素铒对Al-4Cu合金组织与性能的影响[J].中国稀土学报,2002(z2):159-162. |
| [17] | 杨军军,聂祚仁,金头男,徐国富,付静波,左铁镛.稀土元素铒对Al-4Cu合金组织与性能的影响[J].中国稀土学报,2002(z2):159-162. |
| [18] | RIDDLE Y W .Aluminum3 (Scandium,Zirconium) dispersoids in aluminum alloys:Coarsening and recrystallization control[D].Georgia:Georgia Institute of Technology,2000. |
| [19] | 徐国富,聂祚仁,金头男,杨军军,付静波,尹志民.微量铒对LF3铝合金铸态组织的影响[J].中国稀土学报,2002(02):143-145. |
| [20] | 徐国富,聂祚仁,金头男,杨军军,付静波,尹志民.微量铒对LF3铝合金铸态组织的影响[J].中国稀土学报,2002(02):143-145. |
| [21] | RINGER S P;YEUNG W;MUDDLE B C et al.Precipitate stability in Al-Cu-Mg-Zr-Ag alloys aged at high temperatures[J].Acta Metallurgica Et Materialia,1994,42(05):1715-1725. |
| [22] | GABLE B M;SHIFLET G J;STARKE Jr .Alloy development for the enhanced stability of omega precipitates in AlCu-Mg-Zr-Ag alloys[J].Metallurgical and Materials Transactions (A):Physical Metallurgy and Materials Science,2006,37(04):1091-1105. |
| [23] | 张坤,戴圣龙,杨守杰,黄敏,颜鸣皋.Al-Cu-Mg-Ag系新型耐热铝合金研究进展[J].航空材料学报,2006(03):251-257. |
| [24] | 张坤,戴圣龙,杨守杰,黄敏,颜鸣皋.Al-Cu-Mg-Ag系新型耐热铝合金研究进展[J].航空材料学报,2006(03):251-257. |
| [25] | TOROPOVA LS;ESKIN D G;KHARAKTEROVA M L.Aluminum alloys containing seandium-strueture and properties[M].Moscow:Gordon and Brench Science Press,1998 |
| [26] | P. Riani;L. Arrighi;R. Marazza .Ternary Rare-Earth Aluminum Systems With Copper: A Review and a Contribution to Their Assessment[J].Journal of Phase Equilibria and Diffusion,2004(1):22-52. |
| [27] | 李云涛,刘志义,夏卿坤,余日成.Er在Al-Cu-Mg-Ag合金中的存在形式及其均匀化工艺[J].中南大学学报（自然科学版）,2006(06):1043-1047. |
| [28] | TOROPOVA L S;KAMARDINKIN A N;KINDZHIBALO V V et al.Investigation of alloys of the A1-Sc-Zr system in the aluminium-rich range[J].Physics of Metals and Metallography (English Translation of Fizika Metallovi Metallovedenie),1990,70(06):106-110. |
| [29] | Jostein Royset;Nils Ryum .Some comments on the misfit and coherency loss of Al3Sc particles In Al-Sc alloys[J].Scripta materialia,2005(12):1275-1279. |
| [30] | GSCHNEIDER Jr K A;CALDERWOOD F W .The Al-Ersystem[J].Bulletin of Alloy Phase Diagrams,1988,9(06):670-671. |
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