采用Gleeble-1500热模拟机进行热压缩变形实验,研究了一种新型Al-7.5Zn-1.6Mg-1.4Cu-0.12Zr合金在变形温度为380-460℃、应变速率为0.001～0.1 s-1条件下的流变应力特征,并利用TEM分析了合金在不同变形条件下的组织形貌特征.结果表明,应变速率和变形温度对合金流变应力的大小有显著影响,流变应力随变形温度的升高而降低,随应变速率的提高而增大;合金平均亚晶尺寸随温度补偿应变速率Zener-Hollomon参数的升高而减小.可用Zener-Hollomon咖参数描述该Al-Zn-Mg-Cu合金热变形时的流变应力行为.
参考文献
| [1] | Warner T .Recently-developed aluminium solutions for aerospace applications[J].Materials Science Forum,2006,519-521:1271. |
| [2] | Miller W S;Zhuang L;Bottema J;Wittebsoed A J,De Smet P,Haszler A,Vieregge A .Recent development in aluminium alloys for the automotive industry[J].Materials Science and Engineering A,2000,280(03):37. |
| [3] | Heinz A;Haszler A;Keidel C;Moldenhauer S,Benedictus R,Miller W S .Recent development in aluminium alloys for space applications[J].Materials Science and Engineering A,2000,280(03):102. |
| [4] | John L .Advanced aluminum and hybrid aerostructures for future aircraft[J].Materials Science Forum,2006,519-521:1233. |
| [5] | Chakrabarti D J;Liu J;Sawtell R R;Vonema G B.New generation high strength high damage tolerance 7085 thick alloy produot with low quench sensitivity[A].,2004:969. |
| [6] | 陈文.先进铝合金在A380上的应用[J].航空维修与工程,2005(2):40-41. |
| [7] | Poirier J P;关德林.晶体的高温塑性变形[M].大连:大连理工大学出版社,1989 |
| [8] | Puchi E S;Staia M H .High-temperature deformation of commercial-purity aluminum[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1998,29A(09):2345. |
| [9] | Davenpot S B;Silk N J;Sparks C N;Sellars C M .Development of constitutive equations for modeling of hot rolling[J].Journal of Materials Science and Technology,2000,16(05):539. |
| [10] | Shi H;Mclaren A J;Sellers C M;Shahaui R,Belingbroke R .Constitutive equations for high temperature flow stress of aluminum alloys[J].Journal of Materials Science and Technology,1997,13(03):210. |
| [11] | Wright R N;Paulson M S .Constitutive equation development for high strain deformation processing of aluminum alloys[J].Journal of Materials Processing Technology,1998,80-81:556. |
| [12] | Sheppard T;Jackson A .Constitutive equations fee use in prediction of flow stress during extrusion of aluminium alloys[J].Journal of Materials Science and Technology,1997,13(03):203. |
| [13] | Shen J;Xie S S;Tang J H .Dynamic recovery and dynamic reerystallization of 7005 aluminum alloy during hot compression[J].Acta Metallurgica Sinica,2000,13:379. |
| [14] | 李慧中,张新明,陈明安,周卓平.2519铝合金热变形流变行为[J].中国有色金属学报,2005(04):621-625. |
| [15] | Vernon Perry K D;Furu T;Jenson D J;Humphreys J .Doformarion microstructure and texture in hot worked aluminum alloys[J].Mater Sci Technel,1996,12:889. |
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%