为研究大塑形变形对耐热铝合金的作用,采用铸冶金工艺制备了新型的Al-Cu-Mg-Ag耐热铝合金,通过显微组织观察、差热分析及硬度测试等方法,研究了等径角挤压对耐热铝合金显微组织与力学性能的影响.结果表明:通过对挤压态的Al-Cu-Mg-Ag耐热铝合金在固溶淬火后时效前进行等径角挤压变形,可获得晶粒尺寸低于2μm的块体超细晶耐铝合金;等径角挤压有助于加速合金的时效析出过程,提高析出相的析出密度,降低晶界的连续析出,从而使合金的强度与耐热性能得到提高.
参考文献
| [1] | C.R. HUTCHINSON;X. FAN;S.J. PENNYCOOK .ON THE ORIGIN OF THE HIGH COARSENING RESISTANCE OF #OMEGA# PLATES IN Al-Cu-Mg-Ag ALLOYS[J].Acta materialia,2001(14):2827-2841. |
| [2] | 张坤,戴圣龙,黄敏,杨守杰,颜鸣皋.高纯Al-Cu-Mg-Ag合金的时效析出行为[J].中国有色金属学报,2007(03):417-421. |
| [3] | 李云涛,刘志义,夏卿坤,余日成.Er在Al-Cu-Mg-Ag合金中的存在形式及其均匀化工艺[J].中南大学学报（自然科学版）,2006(06):1043-1047. |
| [4] | D. H. Xiao;J. N. Wang;D. Y. Ding .Effect of rare earth Ce addition on the microstructure and mechanical properties of an Al-Cu-Mg-Ag alloy[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2003(1/2):84-88. |
| [5] | 肖代红,黄伯云,陈康华.Al-Cu-Mg-Ag-（Sc）合金的显微组织与腐蚀性能[J].中南大学学报（自然科学版）,2009(05):1252-1258. |
| [6] | Ruslan Z. Valiev;Terence G. Langdon .Principles of equal-channel angular pressing as a processing tool for grain refinement[J].Progress in materials science,2006(7):881-981. |
| [7] | Alexander P. Zhilyaev;Terence G. Langdon .Using high-pressure torsion for metal processing: Fundamentals and applications[J].Progress in materials science,2008(6):1-1. |
| [8] | R. Kapoor;J.K. Chakravartty .Deformation behavior of an ultrafine-grained Al-Mg alloy produced by equal-channel angular pressing[J].Acta materialia,2007(16):5408-5418. |
| [9] | Cheng Xu;Zoltán Száraz;Zuzana Trojanová;Pavel Luká;Terence G. Langdon .Evaluating plastic anisotropy in two aluminum alloys processed by equal-channel angular pressing[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,2008(1/2):206-211. |
| [10] | Lee, JC;Lee, SH;Kim, SW;Hwang, DY;Shin, DH;Lee, SW .The thermal behavior of aluminum 5083 alloys deformed by equal channel angular pressing[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,2010(1/2):100-105. |
| [11] | 王立忠,王经涛,郭成,陈金德.等径弯曲通道变形制备超细晶铝合金的组织性能[J].西安交通大学学报,2004(05):457-460,473. |
| [12] | 毕见强,孙康宁,刘睿,王素梅,范润华.等效应变量对等径角挤压的2A12铝合金力学性能的影响[J].塑性工程学报,2005(06):42-44,48. |
| [13] | A.P. Zhilyaev;G.V. Nurislamova;B.-K. Kim .Experimental parameters influencing grain refinement and microstructural evolution during high-pressure torsion[J].Acta materialia,2003(3):753-765. |
| [14] | M. Richert;H. P. Stuwe;M. J. Zehetbauer .Work hardening and microstructure of AlMg5 after severe plastic deformation by cyclic extrusion and compression[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):180-185. |
| [15] | M.K. Wong;W.P. Kao;J.T. Lui .Cyclic deformation of ultrafine-grained aluminum[J].Acta materialia,2007(26):715-725. |
| [16] | S. Ghosh Chowdhury;Abhijit Dutta;B. Ravikumar .Textural evolution during accumulative roll bonding of an Al-Li alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1/2):351-357. |
| [17] | Koichi Kitazono;Yusuke Kikuchi;Eiichi Sato .Anisotropic compressive behavior of Al-Mg alloy foams manufactured through accumulative roll-bonding process[J].Materials Letters,2007(8/9):1771-1774. |
| [18] | Segal VM. .MATERIALS PROCESSING BY SIMPLE SHEAR[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1995(2):157-164. |
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%