采用常规力学性能和疲劳性能测试、扫描电镜以及透射电镜观察等研究T3和T4热处理制度对含Zr Al-Cu-Mg合金组织和疲劳性能的影响.结果表明:该合金在T3状态下具有更好的综合性能.预变形引入高密度位错导致合金屈服强度显著提高,而伸长率降低不多.当应力比为0.5时,T3状态合金的S-N曲线位于T4状态之上,经106循环周次后,T3状态合金的疲劳强度比T4状态的高10 MPa.在应力强度因子幅度-K相等的条件下,T3状态合金的疲劳裂纹扩展速率比T4状态的略慢.
参考文献
| [1] | CASSADA W;LIU J;TALEY J .Aluminum alloys for aircraft structure[J].Advanced Materials & Processes,2002,160(12):27-29. |
| [2] | Manabu Nakai;Takehiko Eto .New aspects of development of high strength aluminum alloys for aerospace applications[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2000(1/2):62-68. |
| [3] | STARINK M J;GAO N .Relations between microstructure,precipitation,age-formality and damage tolerance of Al-Cu-Mg-Li-(Mn,Zr,Sc) alloys for age forming[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2006,418(25):241-249. |
| [4] | MUKHOPADHYAY A K;SHIFLET G J;Jr STARKE E A .Role of vacancies on the precipition processes in Zr modified aluminum based alloys[J].Scripta Metallurgica et Materialia,1990,24(02):307-312. |
| [5] | BRAY G H;GLAZOV M .Effect of artificial aging on the fatigue crack propagation resistance of 2000 series aluminum alloys[J].International Journal of Fatigue,2001,23(01):265-276. |
| [6] | 谢优华,杨守杰,戴圣龙,陆政.锆元素在铝合金中的应用[J].航空材料学报,2002(04):56-61. |
| [7] | S. C. Wang;M. J. Starink .Precipitates and intermetallic phases in precipitation hardening Al-Cu-Mg-(Li) based alloys[J].International Materials Reviews,2005(4):193-215. |
| [8] | Cabibbo M;Evangelista E .A TEM study of the combined effect of severe plastic deformation and (Zr), (Sc plus Zr)-containing dispersoids on an Al-Mg-Si alloy[J].Journal of Materials Science,2006(16):5329-5338. |
| [9] | SARKAR B;LISAGOR W B .Fracture resistance and fatigue crack growth characteristics of two Al-Cu-Mg-Zr alloys[J].Scripta Metallurgica et Materialia,1992,26(02):169-174. |
| [10] | GB 3075-1982.金属轴向疲劳试验方法[S]. |
| [11] | GB/T 6398-2000.金属材料疲劳裂纹扩展速率试验方法[S]. |
| [12] | 中国航空材料手册[M].北京:中国标准出版社,2002:148-166. |
| [13] | 钟群鹏;赵子华.断口学[M].北京:高等教育出版社,2006:242-326. |
| [14] | 崔约贤;王长利.金属断口分析[M].哈尔滨:哈尔滨工业大学出版社,1998:77-135. |
| [15] | 徐灏.疲劳强度[M].北京:高等教育出版社,1988:11-23. |
| [16] | SURESH S;王中光.Fatigue of materials[M].北京:国防工业出版社,1993:193-214. |
| [17] | KOCANDA S;颜鸣皋;刘才穆.Fatigue failure of metals[M].上海:上海科学技术出版社,1983:210-218. |
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