Particle Characteristics and Densification of W6Mo5Cr4V2Co5Nb Overspray Powder

Ziqiang Pi, Xin Lu, Fei Yang, Bowen Liu, Chengchang Jia, Xuanhui Qu, Wei Zheng, Lizhi Wu, Qingli Shao

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


W6Mo5Cr4V2Co5Nb (825 K) alloy was prepared by a two-step sintering process from overspray 825 K alloy powder. The overspray powder characteristics and the microstructure and mechanical properties of the as-sintered 825 K alloy were investigated. Results showed that two types of carbides formed a network structure in the overspray powder, which had spherical or quasispherical shape: one was MC carbide that was rich in vanadium (V), and the other was M2C carbide enriched with vanadium (V) and tungsten (W). The sintered 825 K alloy contained M6C and MC carbides, of which M6C was rich in tungsten (W) and molybdenum (Mo), and both of these two carbides were uniformly distributed in the alloy matrix. The alloy had relative density of 98.43%, hardness of HRC 51.8, and superior bending strength of 2042 MPa. These mechanical properties can meet the requirements of most engineering applications.

Original languageEnglish
Pages (from-to)2224-2229
Number of pages6
Issue number10
Publication statusPublished - 2018 Oct 1
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)


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