设计平行模压变形、180°交叉模压变形、90°交叉模压变形对1060纯铝进行系列限制模压变形(CGP)试验,采用透射电镜研究该材料在不同变形工艺下的组织演化规律和晶粒细化速率.结果表明:变形工艺不影响组织的演化规律,但显著影响晶粒细化速率、晶粒细化效果以及大角度晶界的形成；90°交叉模压变形最优.在相同的变形温度、变形速率和应变累积条件下,所能达到的晶粒细化速率和大角度晶界的数量取决于剪切变形模式.
参考文献
| [1] | Shin DH.;Park JJ.;Kim YS.;Park KT. .Constrained groove pressing and its application to grain refinement of aluminum[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(1/2):98-103. |
| [2] | 杨开怀,陈文哲.大体积超细晶金属材料的剧烈塑性变形法制备技术[J].塑性工程学报,2010(02):123-129,134. |
| [3] | Hosseini, E;Kazeminezhad, M;Mani, A;Rafizadeh, E .On the evolution of flow stress during constrained groove pressing of pure copper sheet[J].Computational Materials Science,2009(4):855-859. |
| [4] | YANG Kai-huai;CHEN Wen-zhe .Tensile properties of 1060 Al alloy subjected to constrained groove pressing[J].Current Advances in Materials and Processes,2010,129/131:65-69. |
| [5] | E. Hosseini;M. Kazeminezhad .Nanostructure and mechanical properties of 0-7 strained aluminum by CGP:XRD, TEM and tensile test[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2009(1/2):219-224. |
| [6] | Zrnik, J;Kovarik, T;Novy, Z;Cieslar, M .Ultrafine-grained structure development and deformation behavior of aluminium processed by constrained groove pressing[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,2009(1/2):126-129. |
| [7] | 杨开怀,吴永泉,陈文哲.限制模压变形三维有限元模拟[J].中国机械工程,2010(23):2877-2881. |
| [8] | PENG Kai-ping;SU Li-feng;SHAW L L;QIAN Kuang-wu .Grain refinement and crack prevention in constrained groove pressing of two-phase Cu-Zn alloys[J].Scripta Materialia,2007,56:987-990. |
| [9] | E. Rafizadeh;A. Mani;M. Kazeminezhad .The effects of intermediate and post-annealing phenomena on the mechanical properties and microstructure of constrained groove pressed copper sheet[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,2009(1/2):162-168. |
| [10] | 张萤,彭开萍,林雪慧.形变方式对模压形变H62黄铜组织的影响[J].材料热处理学报,2009(04):114-119. |
| [11] | PENG Kai-ping;ZHANG Ying;SHAW L L;QIAN Kuang-wu .Microstructure dependence of a Cu-38Zn alloy on processing condition of constrained groove pressing[J].Acta Materialia,2009,57:5543-5553. |
| [12] | 汪守朴.金相分析基础[M].北京:机械工业出版社,1986 |
| [13] | Yuntian Theodore Zhu;Terry C. Lower .Observations and issues on mechanisms of grain refinement during ECAP process[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2000(1/2):46-53. |
| [14] | Segal VM .Equal channel angular extrusion: from macromechanical to structure formation[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1999(1/2):322-333. |
| [15] | Yoshinori iwahasgi .The process of grain refinement in equal-channel angular pressing[J].Acta materialia,1998(9):3317-3331. |
| [16] | A. GHOLINIA;P. B. PRANGNELL;M. V. MARKUSHEV .THE EFFECT OF STRAIN PATH ON THE DEVELOPMENT OF DEFORMATION STRUCTURES IN SEVERELY DEFORMED ALUMINIUM ALLOYS PROCESSED BY ECAE[J].Acta materialia,2000(5):1115-1130. |
| [17] | 张忠明,徐春杰,田景来,王锦程,郭学锋.ECAP挤压L2纯铝的微观组织演化规律[J].西安理工大学学报,2005(03):227-231. |
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%