在2Cr13不锈钢中引入TiC颗粒后, 室温强度有大幅提高, 但塑性和冲击韧性却发生了较大幅度的下降. 原位合成的TiC颗粒, 尺寸较大且有轻微团聚现象, 导致了在拉伸和冲击过程中颗粒易破碎, 断裂机制是以TiC增强 体失效为主; 对TiC强化2Cr13进行电渣重熔后, 综合性能得到了改善, TiC颗粒变小且分布变均匀, 在拉伸和冲 击过程中颗粒不易破碎, 断裂机制是以TiC与基体的界面失效为主.
Tensile properties of the matrix 2Cr13, TiC reinforced 2Cr13 steels prepared by in-situ reaction and electroslag remelting have been investigated. Experimental results show that introduction of TiC particles to 2Cr13 steel result in significant increase of tensile strength and remarkable decrease of ductility as well as impact toughness of the steel. The mechanism responsible for the fracture of the TiC reinforced 2Cr13 steel without electroslag remelting is mainly the failure of TiC particles due to the large size and distribution ununiformity of the particles in its microstructure. The particles in the steel processed by electroslag remelting are fine and their distribution is uniform. During tests cracking of the particles in the electroslag remelted steel is not easy to occur and the mechanism responsible for the fracture of its specimens is basically the failure of interfaces between particles and matrix.
参考文献
| [1] | |
| [2] | |
| [3] | |
| [4] | |
| [5] | |
| [6] | |
| [7] | |
| [8] | |
| [9] | |
| [10] |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%