采用水煮溶解造孔剂法,即先制备孔隙呈梯度分布的钨骨架、后渗铜的方法,制备了W/Cu功能梯度材料,并对钨铜在纵截面的分布进行了检测,数据表明在纵截面上钨铜呈梯度分布.利用水淬法模拟其服役状况并用有限差分方法对产生的非稳态热应力进行了分析.结果表明,热应力的最大值总是出现在两端,由于富钨端相对密度较低,裂纹总是在该端出现,模拟结果与实验结果相一致.
参考文献
| [1] | Wang Baolin,Mai Yiuwing.Thermal shock resistance of functionally graded materials[J].Acta Materialia,2004,52(17):4961-4972. |
| [2] | Liu X,Yang L,Tamura S,et al.Thermal response of plasma sprayed tungsten coating to high heat flux[J].Fusion Engineering and Design,2004,70(4):341-349. |
| [3] | Bolt H,Barabash V,Krauss W,et al.Materials for the plasma-facing components of fusion reactors[J].Journal of Nuclear Materials,2004,329/333:66-73. |
| [4] | Zhang M,Huang H J.Development of functionally gradient materials[J].Materials Science Forum,2002,423/425:599-600. |
| [5] | Jin G,Nishikawa T,Honda S,et al.Stress analysis in multilayered FGM plate under thermal shock[J].Materials Science Forum,2003,423/425:693-698. |
| [6] | Ling Y H,Bai X D,Ge C C.Design and thermal shock performance of W/Cu functionally graded materials used as plasma facing component[J].Materials Science Forum,2003,423/425:49-54. |
| [7] | Gasik Michael M.Micromechanical modeling of functionally graded materials[J].Computational Materials Science,1998,13(1/3):42-55. |
| [8] | Yoshiyasu Itoh,Masashi Takahashi,HirohisaTakao.Design of tungsten/copper graded composite for high heat flux components[J].Fusion Engineering and Design,1996,31 (4):279-289. |
| [9] | Ravichandran K S.Thermal residual stress in a functionally graded material system[J].Materials Science and Engineering A,1995,201(1/2):269-276. |
| [10] | 严宗达,王洪礼.热应力[M].北京:高等教育出版社,1991:11-13.Yan Zongda,Wang Hongli.Thermal Stress[M].Beijing:Higher Education Press,1991:11-13. |
| [11] | 黄培云.粉末冶金原理[M].北京:冶金工业出版社,1983:416-417.Huang Peiyun.Theory of Powder Metallurgy[M].Beijing:Metallurgical Industry Press,1983:416-417. |
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%