利用Gleeble-1500D热模拟试验机对Cu-Cr-Zr和Cu-Cr-Zr-Y合金,进行高温等温压缩试验,研究了在变形温度为650～850℃、应变速率为0.001～10 s-1条件下两种合金的流变应力的变化规律,测定了真应力一应变曲线,从流变应力、应变速率和温度的相关性,得出了该合金热压缩变形时的热变形激活能Q和本构方程,并利用光学显微镜分析了合金在热压缩过程中的组织演变及动态再结晶机制.结果表明:稀土元素Y的加入细化了微观组织,提高了Cu-Cr-Zr合金的动态再结晶体积分数,并且大幅降低了合金的热变形激活能Q,改善了其热加工性能.
参考文献
| [1] | 赵冬梅,董企铭,刘平,金志浩,黄金亮.铜合金引线框架材料的发展*[J].材料导报,2001(05):18-20. |
| [2] | 于朝清.引线框架用高强高导铜合金材料[J].电工材料,2005(02):33-37,43. |
| [3] | Batra IS.;Kulkarni UD.;Banerjee S.;Dey GK. .Microstructure and properties of a Cu-Cr-Zr alloy[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2001(2):91-100. |
| [4] | Vinogradov A;Patlan V;Suzuki Y et al.Structure and properties of ultra-fine grain Cu-Cr-Zr alloy[J].Acta Materialia,2002,50:1639-1651. |
| [5] | Su JH;Dong QM;Liu P;Li HJ;Kang BX .Research on aging precipitation in a Cu-Cr-Zr-Mg alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):422-426. |
| [6] | Zhang, L.;Li, Z.;Lei, Q.;Qiu, W.T.;Luo, H.T. .Hot deformation behavior of Cu-8.0Ni-1.8Si-0.15Mg alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2011(3):1641-1647. |
| [7] | Hui Zhang;Honggang Zhang;Luoxing Li .Hot deformation behavior of Cu-Fe-P alloys during compression at elevated temperatures[J].Journal of Materials Processing Technology,2009(6):2892-2896. |
| [8] | 董企铭,苏娟华,刘平,李贺军,康布熙.Cu-Cr-Zr-Mg合金时效析出研究[J].材料热处理学报,2004(03):38-41. |
| [9] | Suzuki H;Kanno M .Some properties of Cu-Cr-Hf alloys[J].Journal of the Japan Institute of Metals,1969,33(02):174-178. |
| [10] | Batawi E;Morris D G;Morris M A .Effect of small alloying additions on behavior of rapidly solidified Cu-Cr alloys[J].Materials Science and Technology,1990,6(09):892-899. |
| [11] | 刘勇,刘平,李伟,田保红.Cu-Cr-Zr-Y合金时效析出行为研究[J].功能材料,2005(03):377-379. |
| [12] | 孔凡涛;李宝辉;陈玉勇 等.稀土Y对Ti-43Al-9V合金热变形行为的影响[J].稀有金属材料与工程,2005,34(z3):79-81. |
| [13] | 胡赓祥;蔡殉;戎咏华.材料科学基础[M].上海:上海交通大学出版社,2009:106-108. |
| [14] | Garofalo F .An empirical relation refining the stress dependence of minimum creep rate in metals[J].Transactions of the Metallurgical Society of ALME,1963,227(02):351-355. |
| [15] | Sellars C M;Mctegart W J .On the mechanism of hot deformation[J].Acta Metallurgica,1966,14:1136-1138. |
| [16] | Zenergy C;Hollomon J H .Effect of strain-rate upon the plastic flow of stell[J].Journal of Applied Physics,1944,15(01):22-27. |
| [17] | Mcqueen H J;Yue S;Ryan N D .Hot working characteristics of steels in austenitic state[J].Journal of Materials Processing Technology,1995,53:293-310. |
| [18] | 赵瑞龙,刘勇,田保红,张晓伟,张毅.纯铜的高温变形行为[J].金属热处理,2011(08):17-20. |
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