采用立式烧结熔渗法制备的CuW/Cu0.89wt%Cr整体材料经固溶时效处理后,对其在不同热循环条件下的结合面强度进行了研究.结果表明,在室温～500气温度范围内,随着热循环次数的增加,整体材料的结合面强度和CrCu端合金显微硬度略有提高.而在室温至600℃热循环温度区间内,结合强度和CuCr合金显微硬度随热循环次数的增加而下降.对不同热循环条件下CuCr端合金组织的研究表明,上限温度为500℃时,晶粒没有发生再结晶现象,析出相面心立方的Cr相非常细小、分散,且与Cu基体保持良好的共格关系;而当热循环上限温度为600℃时,晶粒发生了再结晶长大,析出相明显粗化,此时析出的体心立方的Cr相已与Cu基体失去完全共格关系.
参考文献
| [1] | S.S. Ryu;Y.D. Kim;I.H. Moon .Dilatometric analysis on the sintering behavior of nanocrystalline W-Cu prepared by mechanical alloying[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2002(1/2):233-240. |
| [2] | Li Li;Y.S.Wong;J.Y.H. Fuh .Effect of TiC in copper-tungsten electrodes on EDM performance[J].Journal of Materials Processing Technology,2001(1/3):563-567. |
| [3] | Yutaka H;Hideaki H;Takeshi I .Deformation behavior at room temperature of W-80vo1%Cu composite[J].International Journal of Refractory Metals & Hard Matedats,2004,22:87-93. |
| [4] | 范志康,杨红旺,梁淑华,肖鹏.Effects of extrusion on chromium precipitation in Cu-Cr alloy[J].中国有色金属学会会刊(英文版),2003(02):267-270. |
| [5] | 刘平;康布熙;曹兴国 等.快速凝固Cu-Cr合金时效析出的共格强化效应[J].金属学报,1999,35(06):561-564. |
| [6] | Zhanbo Sun;Youhong Wang;Juan Guo;Yiaomin Zhu;Xiaoping Song;Ruihua Zhu .Liquid and solid phase separation during melt spinning and annealing in melt-spun Cu-Cr ribbons[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1/2):411-416. |
| [7] | Jin Y;Adachi K;Takeuchi T;Suzuki H G .Aging characteristics of Cu-Cr in-situ composite[J].J of Materials Seince,1998,33:1333-1341. |
| [8] | C.P.Luo;U.Dahmen .Interface structure of faceted lath-shaped Cr precipitates in a Cu-0.33 WT/100 Cr alloy[J].Acta materialia,1998(6):2063-2081. |
| [9] | Wang X F;Zhao J Z;He J .Investigation on the microstrueture and mechanical properties of the spray-formed Cu-Cr alloys[J].Materials Science and Engineering A,2007,460-461:69-76. |
| [10] | Iwamura S;Miura Y .Loss in coherency and coarsening behavior of A13Sc precipitates[J].Acta Materialia,2004,52:591-600. |
| [11] | Marquis E A;Seidman D N .Nanoscale struetureal evolution of Al3Sc precipitates in Al(Sc)alloys[J].Acta Materialia,2001,49:1909-1919. |
| [12] | S. G. Jia;M. S. Zheng;P. Liu;F. Z. Ren;B. H. Tian;G. S. Zhou;H. F. Lou .Aging properties studies in a Cu-Ag-Cr Alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1/2):8-11. |
| [13] | Jones M J;Humphreys F J .Interaction of recrystallization and precipitation:The effect of A13Sc on the recrystallization behaviour of deformed aluminium[J].Acta Materialia,2003,51:2149-2159. |
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%