采用燃烧合成技术制备了相对密度为90%左右的TiB2-40Cu金属-陶瓷复合材料,为了进一步提高复合材料的力学性能,研究了TiB2-40Cu金属-陶瓷高温压缩弹塑性变形行为,证明了高陶瓷体积分数下金属陶瓷在高温环境下具有一定的塑性行为.分别在1050℃、1090℃、1150℃对复合材料进行二次热压烧结,详细研究了工艺参数对TiB2-40Cu复合材料二次热压变形、组织特征及力学性能的影响.结果表明:经过二次热压后,材料的相对密度和弯曲强度有了较大幅度的提高,在1090℃时,材料的相对密度达到了96%,弯曲强度达到605.5MPa.并从宏观和微观上分析了致密化机理,认为致密化过程是多种机制共同作用的结果.
参考文献
| [1] | 张永刚,韩雅芳,陈国良,等. 金属间化合物结构材料[M].北京:国防工业出版社,2001.904-920. |
| [2] | 刘业翔,邹忠. 导电陶瓷TiB2开发与应用的最新进展[J].稀有金属,1996,20(6):438-443. |
| [3] | Dong S J, Zhou Y, Shi Y W,et al.Formation of a TiB2-reinforced copper-based composite by mechanical alloying and hot pressing[J]. Metall Mater Trans A,2002,33(4):1275-1280. |
| [4] | Gotman I,Koczak M J, Shtessel E.Fabrication of Al matrix composites via self-propagating synthesis[J]. Mater Sci Eng A, 1994, 187(2):189-195. |
| [5] | Ma Z Y, Tjong S C. High temperature creep behavior of in-situ TiB2 particulate reinforced copper-based composite[J]. Mat Sci Eng A,2000,284(1-2):70-76. |
| [6] | 李荣九.陶瓷-金属复合材料[M]. 北京:冶金工业出版社,1995.568-675. |
| [7] | Zhang Xing Hong, Han Jie Cai, He Xiao Dong, et al. Combustion synthesis and densification of large-scale cermets [J]. Materials Letters, 2002, 56(3): 183-187. |
| [8] | 梁淑华.Al2O3颗粒增强铜基复合材料的组织[J]. 复合材料学报,1998,15(3):45-48. |
| [9] | Abdel-Hamid A A,Hamar-Thibault S,Hamar R. Crystal morphology of the compound TiB2[J].Journal of Crystal Growth,1985,71(3):744-750. |
| [10] | Chokshi A H. Influence of grain size on cavitation in superplasticity[J].Materials Science Forum,1997, 233-234: 89-108. |
| [11] | Kuhn H A. X-ray study of creep-deformation induced changes of the lattice mismatch in the γ prime-hardened monocrystalline nickel-base superalloy SRR 99[J]. Acta Metallurgica et Materialia,1991,39(11): 2783-2794. |
| [12] | Glasser F P. Advances in the performance of cement-based systems[A].In: Shigeyki Somiya.Advanced Ceramics[C]. Elsevier Science Publishers LTD, 1990. 157-161. |
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%