研究了含钪Al-Zn-Cu-Mg-Zr合金的晶间腐蚀和剥落腐蚀行为.结果表明:合金在过时效状态下具有最低的晶间腐蚀与剥落腐蚀敏感性;随着时效时间的延长,其晶间腐蚀与剥落腐蚀敏感性逐渐降低;在EXCO溶液中进行的极化曲线测试也表现出相同的趋势.合金发生晶间腐蚀与η'和S'相的析出与分布紧密相关.随着时效时间的延长,η'和S'相不断析出并向平衡相η和S转变,进一步聚集长大,一方面减少了晶间腐蚀的阳极通道,另一方面减小了沉淀相与基体之间的开路电位,从而使晶间腐蚀和剥落腐蚀的速率降到最低.
参考文献
| [1] | 何代惠;蒋呐 .俄罗斯的铝锂合金工业[J].铝加工,1999,22(02):48-54. |
| [2] | KRANER L S;TACK W T;FERNANKES M T.Scandium in aluminum alloys[J].Current Advances in Materials and Processes,1997(10):23-31. |
| [3] | 邱惠中;吴志红 .国外航天材料的新进展[J].宇航材料工艺,1997,27(04):5-13. |
| [4] | И.Н.弗里德良捷尔;姚毅中;刘静安;傅启明,邵秀兰.变形结构铝合金[M].重庆:科学技术文献出版社重庆分社,1989 |
| [5] | 张匀;朱自勇;王政富 等.铝锂合金的晶间腐蚀和剥落腐蚀行为[J].中国腐蚀与防护学报,1992,12(02):180-184. |
| [6] | 张万明.Al-Li合金中金属间相的电化学行为[J].腐蚀科学与防护技术,1997(03):197. |
| [7] | 左尚志;李狄 .国内外铝合金剥蚀研究的现状[J].材料保护,1994,27(12):23-26. |
| [8] | 苏景新,张昭,曹发和,张鉴清,曹楚南.铝合金的晶间腐蚀与剥蚀[J].中国腐蚀与防护学报,2005(03):187-192. |
| [9] | BRAUN R;LENCZOWSKI B;TEMPUS G .Effect of thermal exposure on the corrosion properties of an Al-Mg-Sc alloy sheet[J].Materials Science Forum,2000,331-337:1647-1652. |
| [10] | GB 7998-2005.GB 7998-2005.The method for determining the intergranular corrosion of aluminium alloy[S]. |
| [11] | ASTM G34-2001.ASTM G34-2001.Standard test method for exfoliation corrosion susceptibility in 2 ××× and 7 ××× series aluminium alloys[S]. |
| [12] | TAN Cheng-yu,ZHENG Zi-qiao,XIA Chang-qing.The Aging Feature of Al-Li-Cu-Mg-Zr Alloy Containing Sc[J].中南工业大学学报,2000(02):65. |
| [13] | S.Iwamura;M.Nakayama;Y.Miura .Coherency between Al_3Sc Precipitate and the Matrix in Al Alloys Containing Sc[J].Materials Science Forum,2002(Pt.2):1151-1156. |
| [14] | Parker BA.;Nolle P.;Zhou ZF. .THE EFFECT OF SMALL ADDITIONS OF SCANDIUM ON THE PROPERTIES OF ALUMINIUM ALLOYS[J].Journal of Materials Science,1995(2):452-458. |
| [15] | 潘清林,朱朝明,李运春,梁文杰,何运斌,李文斌.含钪Al-Cu-Li-Zr合金的抗晶间腐蚀和剥落腐蚀性能[J].材料保护,2006(10):1-4. |
| [16] | 张茁,陈康华.固溶处理对Al-Zn-Mg-Cu铝合金电导率的影响[J].粉末冶金材料科学与工程,2004(01):79-83. |
| [17] | 苏景新,张昭,曹发和,张鉴清,曹楚南.铝合金的晶间腐蚀与剥蚀[J].中国腐蚀与防护学报,2005(03):187-192. |
| [18] | TAN Cheng-yu,ZHENG Zi-qiao,XIA Chang-qing.The Aging Feature of Al-Li-Cu-Mg-Zr Alloy Containing Sc[J].中南工业大学学报,2000(02):65. |
| [19] | S.Iwamura;M.Nakayama;Y.Miura .Coherency between Al_3Sc Precipitate and the Matrix in Al Alloys Containing Sc[J].Materials Science Forum,2002(Pt.2):1151-1156. |
| [20] | 魏修宇,谭澄宇,郑子樵,李劲风,李海,李艳芬.时效对2195铝锂合金腐蚀行为的影响[J].中国有色金属学报,2004(07):1195-1200. |
| [21] | 中国腐蚀与防护学会.有色金属的耐腐蚀性及其应用[M].北京:化学工业出版社,1997 |
| [22] | VYAZOVIKINA N V .The effect of scandium on the corrosion resistance ofaluminum and its alloys in 3% NaCl solution[J].Protection of Metals,1999,35:448-453. |
| [23] | KHARINA G V;KOCHERGIN V P .Corrosion of alloys of aluminum with zinc and rare earth metals in sodium metavanadate solutions[J].Protection of Metals,1996,32:134-136. |
| [24] | SINYAVSKII V S;VALKOV V D;TITKOVA E V .The effect of scandium and zirconium additions on corrosion properties of Al-Mg alloys[J].Protection of Metals,1998,34:549-555. |
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