通过正交试验获得2519A铝合金优化的二次时效工艺,并通过硬度测试、拉伸测试、极化曲线分析、晶间腐蚀试验和透射电镜观察等方法对比不同时效状态样品的力学性能和耐蚀性能.结果表明:与等温时效相比,二次时效能提高2519A铝合金的屈服强度,同时改善合金的耐蚀性能,这是因为二次时效后晶内形成了细小弥散的θ”相,同时晶内的普遍脱溶使晶内基体与晶界无沉淀析出带(PFZ)的电位差减小.
参考文献
| [1] | SANDERS R E;PETIT J I .High strength weldable aluminum base alloy product and method of making same[P].US,4610733,1986-09-09. |
| [2] | Dymek S.;Dollar M. .TEM investigation of age-hardenable Al 2519 alloy subjected to stress corrosion cracking tests[J].Materials Chemistry and Physics,2003(2/3):286-288. |
| [3] | James J. Fisher Jr.;Lawrence S. Kramer;Joseph R. Pickens .ALUMINUM ALLOY 2519 IN MILITARY VEHICLES[J].Advanced Materials & Processes,2002(9):43-46. |
| [4] | 张新明,刘波,刘瑛,李慧中,李惠杰.温度与保温时间对2519A铝合金高温力学性能的影响[J].中国有色金属学报,2007(10):1561-1566. |
| [5] | GAO Zhi-guo;ZHANG Xin-ming;CHEN Ming-an .Investigation on θ' precipitate thickening in 2519A-T87 aluminum alloy plate impacted[J].Journal of Alloys and Compounds,2009,476(1/2):1-3. |
| [6] | 李慧中,张新明,陈明安,周卓平,龚敏如.预变形对2519铝合金组织与力学性能的影响[J].中国有色金属学报,2004(12):1990-1994. |
| [7] | 张新明,刘玲,贾寓真.拉伸与轧制预变形对2519A铝合金组织与力学性能的影响[J].中国有色金属学报,2010(06):1088-1094. |
| [8] | 张新明,李慧中,陈明安,梁霄鹏,李洲,贾寓真.热处理对2519铝合金应力腐蚀开裂敏感性的影响[J].中国有色金属学报,2006(10):1743-1748. |
| [9] | 刘瑛,张新明,周古昕,刘波,李慧中,高慧,李惠杰.预变形量对2519铝合金抗剥落腐蚀性能的影响[J].材料热处理学报,2006(06):61-65. |
| [10] | 刘瑛,张新明,刘波,李慧中,高慧.预变形量对2519铝合金抗晶间腐蚀性能的影响[J].中国有色金属学报,2006(09):1545-1550. |
| [11] | LUMLEY R N;POLMEAR I J;MORTON A H .Heat treatment of age hardenable aluminium alloys utilizing secondary precipitation[P].US,7037391 B2,2006-05-02. |
| [12] | LUMLEY R N;POLMEAR I J;MORTON A H .Heat treatment of age-hardenable aluminum alloys[P].US,7025839 B2,2006-04-11. |
| [13] | C. E. Macchi;A. Somoza;A. Dupasquier .Secondary precipitation in Al-Zn-Mg-(Ag) alloys[J].Acta materialia,2003(17):5151-5158. |
| [14] | J. Buha;R.N. Lumley;A.G. Crosky .Secondary precipitation in an Al-Mg-Si-Cu alloy[J].Acta materialia,2007(9):3015-3024. |
| [15] | R. N. Lumley;A. J. Morton;I. J. Polmear .Enhanced creep performance in an Al-Cu-Mg-Ag alloy through underageing[J].Acta materialia,2002(14):3597-3608. |
| [16] | 李海,郑子樵,王芝秀.7055铝合金二次时效特征研究-（Ⅰ）力学性能[J].稀有金属材料与工程,2005(07):1029-1032. |
| [17] | 李海,郑子樵,王芝秀.7055铝合金二次时效特征研究--（Ⅱ）显微组织与断口形貌特征[J].稀有金属材料与工程,2005(08):1230-1234. |
| [18] | TALBOT D;TALBOT J.Corrosion science and technology[M].Boca Raton:CRC Press,1998:100-113. |
| [19] | GB/T 7998-2005.铝合金晶间腐蚀测定方法[S]. |
| [20] | ZHU A W;STARKE E A .Strengthening effect ofunshearbacle particles of finite size:A computer experimental study[J].Acta Materialia,1999,47(11):3263-3269. |
| [21] | 刘刚,丁向东,孙军,陈康华.具有盘状析出相铝合金的时效强化模型[J].中国有色金属学报,2001(03):337-347. |
| [22] | SON S K;TAKEDA M;MITOME M;BANDO Y ENDO T .Precipitation behavior of an Al-Cu alloy during isothermal aging at low temperatures[J].Materials Letters,2005,59(06):629-632. |
| [23] | 黄 昆;韩汝琦.固体物理学[M].北京:高等教育出版社,1988:541-545. |
| [24] | 宋余九.金属的晶界与强度[M].西安:西安交通大学出版社,1988:77-80. |
| [25] | DAVIS J R.Corrosion of aluminum and aluminum alloy[M].Ohio:ASM International,1999:63-64. |
| [26] | MULLER I L;GALYELE J R .Pitting potential of high purity binary aluminium alloys.(Ⅰ):Al-Cu alloys pitting and intergranular corrosion[J].Corrosion Science,1977,17(03):179-189. |
| [27] | URUSHINO K;SUGIMOTO K .Stress-corrosion cracking of aged Al-Cu-Mg alloys in NaCl solution[J].Corrosion Science,1979,19(04):225-236. |
| [28] | SUGIMOTO K;HOSHINO K;KAGEYAMA M;SAWADA Y .Stress corrosion cracking of aged Al-4%Cu alloy in NaCl solution[J].Corrosion Science,1975,15(6/12):709-720. |
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%