采用硬度仪、X射线衍射仪及透射电镜等研究了分别含有θ"、θ'和θ析出相三种时效态铝铜合金在室温多向压缩(MAC)过程中硬度和显微组织的变化.结果表明:随着压缩道次的增加,三种时效态合金的硬度基本呈逐渐增加的趋势,但含θ"、θ'相合金的硬度均有一个谷值;多向压缩18道次后,含θ"、θ'相合金获得等轴超细晶粒,尺寸达到0.56-0.71μm,舍θ相合金的为细长晶粒,析出相θ不回溶.
参考文献
| [1] | D.H. Shin;I. Kim;J. Kim .Microstructure development during equal-channel angular pressing of titanium[J].Acta materialia,2003(4):983-996. |
| [2] | Suk Bong Kang;Cha Yong Lim;Hyoung Wook Kim .Microstructure Evolution and Hardening Behavior of 2024 Aluminum Alloy Processed by the Severe Plastic Deformation[J].Materials Science Forum,2002(Pt.2):1163-1168. |
| [3] | E. Schafler;R. Pippan .Effect of thermal treatment on microstructure in high pressure torsion (HPT) deformed nickel[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(0):799-804. |
| [4] | B. Cherukuri;T.S. Nedkova;R. Srinivasan .A comparison of the properties of SPD-processed AA-6061 by equal-channel angular pressing, multi-axial compressions/forgings and accumulative roll bonding[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(0):394-397. |
| [5] | C. Pithan;T. Hashimoto;M. Kawazoe;J. Nagahora;K. Higashi .Microstructure and texture evolution in ECAE processed A5056[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2000(1):62-68. |
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%