为改善三元金属硅化物Co3Mo2Si耐磨合金的室温韧性,利用激光熔化沉积方法制备了钴基固溶体增韧的Co3Mo2Si三元金属硅化物合金.结果表明:其显微组织由Co3Mo2Si初生树枝晶和枝晶间少量Co/Co3Mo2Si共晶组成;Co/Co3Mo2Si金属硅化物合金的硬度随Co3Mo2Si初生树枝晶体积分数的增加而提高;与激光熔化沉积Co3Mo2Si单相三元金属硅化物相比,钴基固溶体增韧的Co3Mo2Si三元金属硅化物合金的韧性显著改善,枝晶间钴基固溶体或Co/Co3Mo2Si共晶体积分数越高,合金的韧性越好.
参考文献
| [1] | Mills D J;Knutsen R D .[J].Wear,1998,215:83. |
| [2] | Molinari A;Pellizzari M;Straffelini G et al.[J].Surface and Coatings Technology,2000,126:31. |
| [3] | Watson S W;Madsen B W;Cramer S D .[J].Wear,1995,181-183:469. |
| [4] | Wang H M;Cao F;Cai L X .[J].Acta Materialia,2003,51:6319. |
| [5] | Lu XD.;Wang HM. .High-temperature sliding wear behaviors of laser clad Mo2Ni3Si/NiSi metal silicide composite coatings[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2003(1/4):190-195. |
| [6] | Wang H M;Luan D Y;Cai L X .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2003,34A:2015. |
| [7] | Sauthoff G .[J].Intermetallics,2000,8:1101. |
| [8] | Chu, F;McClellan, KJ;Peralta, P;Thoma, DJ .Mo sub 5 Si sub 3 single crystals: physical properties and mechanical behavior[J].Materials Science & Engineering. A, Structural Materials: Properties, Microstructure and Processing,1999(1-2):44-52. |
| [9] | 杨晓华;吕涛;丁华东 .[J].稀有金属材料与工程,1996,25(04):1. |
| [10] | 段刚,赵海云,王华明.激光熔炼/快速凝固γ/Cr3Si金属硅化物"原位"复合材料研究[J].稀有金属材料与工程,2003(02):121-125. |
| [11] | 王华明;张凌云 .[P].CN 2121496.4,2002. |
| [12] | 马勤,杨延清,康沫狂.压痕法测定热压MoSi2基复合材料K1C值的研究[J].稀有金属材料与工程,1996(02):30-32. |
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%