对工业纯铜在150℃条件下进行多向挤压,研究多向挤压工艺对纯铜组织和性能的影响.随着挤压道次的增加,材料晶粒得到明显细化,最终得到晶粒尺寸为微米级的等轴细晶组织.材料的显微硬度和抗拉强度在低道次挤压时迅速上升之后趋于饱和,延伸率在前期明显下降后也趋于稳定,其断裂性质仍是韧性断裂.经过15个道次挤压,晶粒平均尺寸达到0.78μm,抗拉强度达到485.5 MPa,显微硬度达129.4 HV0.2,断后延伸率为18.7％.
参考文献
| [1] | Valiev RZ.;Alexandrov IV.;Islamgaliev RK..Bulk nanostructured materials from severe plastic deformation [Review][J].Progress in materials science,20002(2):103-189. |
| [2] | Ruslan Z. Valiev;Yuri Estrin;Zenji Horita.Producing Bulk Ultrafine-Grained Materials by Severe Plastic Deformation[J].JOM,20064(4):33-39. |
| [3] | 郭强;严红革;陈振华;张辉.多向锻造技术研究进展[J].材料导报,2007(2):106-108. |
| [4] | 简炜炜;康志新;李元元.多向锻造ME20M镁合金的组织演化与力学性能[J].中国有色金属学报,2008(6):1005-1011. |
| [5] | Belyakov A.;Miura H.;Tsuzaki K.;Sakai T..Grain refinement in copper under large strain deformation[J].Philosophical Magazine.A.Physics of condensed matter, defects and mechanical properties,200111(11):2629-2643. |
| [6] | Gubicza, J.;Dobatkin, S.V.;Khosravi, E.;Kuznetsov, A.A.;Lábár, J.L..Microstructural stability of Cu processed by different routes of severe plastic deformation[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,20113(3):1828-1832. |
| [7] | 石凤健;王雷刚;许涛;芦笙.反复镦压工艺制备超细晶铜的组织与性能[J].材料热处理学报,2011(12):89-93. |
| [8] | T. Sakai;H.Miura;X. Yang.Ultrafine grain formation in face centered cubic metals during severe plasticdeformation[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,20091/2(1/2):2-6. |
| [9] | T. SAKAI;A. BELYAKOV;H. MIURA.Ultrafine Grain Formation in Ferritic Stainless Steel during Severe Plastic Deformation[J].Metallurgical and materials transactions. A, physical metallurgy and materials science,20089(9):2206-2214. |
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%