|
|
|
| Effect of VC content on the microstructure and mechanical properties of Mo2FeB2 based cermets |
| PENG Jia-jian，CONG Shan-hai，TAO Ze-xu，WANG Xiao-feng |
| Key Laboratory of Ferrous Metallurgy and Resources Utilization， Ministry of Education， Wuhan University of Science and Technology， Wuhan 430081， China |
|
|
|
|
Abstract Mo2FeB2 based cermets samples with different VC content were prepared by reaction boronizing sintering. The microstructure and mechanical properties of the samples were analyzed. Results show that VC effectively refines grain size of Mo2FeB2 cermet and is uniformly distributed in the matrix. The hardness and wear resistance of the sample increase firstly and then decrease with the increasing VC content. The sample has the highest hardness and the best wear resistance when the mass percent of VC is 9%.
|
|
Received: 12 June 2016
Published: 18 April 2017
|
|
|
|
| [1] Takagi K, Ohira T, Ide T, et al. New P/M iron containing multiple boride base hard alloy[C]. // Aqua E N, Whitman C I. Modern Development in Powder Metalurgy. Princeton, N J: MPIF, 1985:153-166.[2] Nishiyama K, Keino M, Furuyama Y, et al. Internal friction of cermets at elevated temperatures[J]. Journal of Alloya and Compounds, 2003; 35, 5:214-219.[3] Wang YG, Li ZQ. Development of ternary-boride-based hard cladding material[J]. Materials Research Bulletin 2002; 37, 3:417–423.[4] Pang XM, Zheng Y, Wang SG, Wang QH. Effect of Mn on valence-electron structure and properties of hard phase in Mo2FeB2-based cermets[J]. International Journal of Refractory Metals and Hard Materials. 2009; 27, 4:777–800.[5] 陈继欣.细晶粒Mo2FeB2基金属陶瓷制备及其高温抗氧化性能的研究[D].南京航空航天大学,2014.[6] 张志伟,从善海,胡梅. NbC含量对Mo2FeB2基金属陶瓷的显微组织和力学性能的影响[J]. 粉末冶金工业,2015,05:52-55. [7] KH哈比希.材料的磨损与硬度[M]. 严立，译.北京:机械工业出版社，1987. |
|
|
|
2017, Vol. 27 
