测试并对比了掺杂微量稀土Er中高Mg铝合金5E83和5E06冷轧板的疲劳性能,运用XRD、扫描电镜(SEM)以及能谱(EDS)等对合金组织与疲劳断口进行表征,探讨了Er与Mg元素对Al-Mg合金疲劳断裂行为的影响.结果表明:合金中Mg固溶量的增加可提高合金疲劳强度并减缓裂纹扩展速率.合金中Er含量超过其固溶度后,其含量的增加也可减缓裂纹的扩展,这归结为粗大析出物Al3Er能够使裂纹偏折并发生闭合从而有效阻碍裂纹的扩展.
参考文献
| [1] | 王祝堂;田荣璋.铝合金及其加工手册[M].长抄:中南大学出版社,2005 |
| [2] | Liu ZX;Li ZJ;Wang MX;Weng YG .Effect of complex alloying of Sc, Zr and Ti on the microstructure and mechanical properties of Al-5Mg alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(0):120-122. |
| [3] | A.K. Lohar;B. Mondal;D. Rafaja .Microstructural investigations on as-cast and annealed Al-Sc and Al-Sc-Zr alloys[J].Materials Characterization,2009(11):1387-1394. |
| [4] | 熊峻江.疲劳断裂可靠性工程学[M].北京:国防工业出版社,2008 |
| [5] | P. Cavaliere;M. Cabibbo .Effect of Sc and Zr additions on the microstructure and fatigue properties of AA6106 produced by equal-channel-angular-pressing[J].Materials Characterization,2008(3):197-203. |
| [6] | Fuller CB.;Krause AR.;Dunand DC.;Seidman DN. .Microstructure and mechanical properties of a 5754 aluminum alloy modified by Sc and Zr additions[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(1/2):8-16. |
| [7] | 张志军,黄晖,王为,朱世旦.铒对Al-4.7Mg-0.7Mn-0.1Zr合金疲劳强度的影响[J].稀有金属,2009(05):611-615. |
| [8] | Bai S;Liu Z Y;Li Y T;Hou Y H,Chen X .Microstructures and fatigue fracture behavior of an Al-Cu-Mg-Ag alloy with addition of rare earth Er[J].Metall Sci Eng A,2009,MSA25662:1. |
| [9] | Peng Y Y;Yin Z M;Nie B;Wang T.Effect of minor Sc and Zr on the fatigue properties of Al-Mg-Mn alloy[A].,2007:863. |
| [10] | Watanabe C;Monzen R.Fatigue behavior and microstructure of an Al-Mg-Sc alloy at an elevated temperature[A].,2010:240. |
| [11] | Wirtz T;Lutjering G;Gysler A;Lenczowski B Rauh R .Fatigue properties of the aluminium alloys 6013 and Al-Mg-Sc[J].Materials Science Forum,2000,331(03):1489. |
| [12] | Baek U B;Park J S;Chung I H;Nahm S H Ma Y H Lee Y Y .A study on fatigue properties of Sc added Al 2519 alloy[J].Key Engineering Materials,2005,297-300:2483. |
| [13] | Baek U B;Park J S;Chung I H;Park T W Nahm S H .A study on fatigue properties of Sc and Zr added Al alloy[J].Key Engineering Materials,2007,345-346:657. |
| [14] | Suresh S;王中光.材料的疲劳[M].北京:国防工业出版社,1993 |
| [15] | 邢泽炳 .稀土元素Er在Al-4.5Mg-0.7Mn-0.lZr合金中的作用机理研究[D].北京:北京工业大学,2007. |
| [16] | 赵少汴;王忠保.抗疲劳设计--方法与数据[M].北京:机械工业出版社,1997 |
| [17] | 朱知寿,马济民,高扬,曹春晓,颜鸣皋.富Nd第二相颗粒对钛合金拉伸断裂方式的影响[J].航空材料学报,2000(03):27-32. |
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