Influence of Cr3C2 content on the wear properties of Cr3C2/Ni3Al composites
Artikel i vetenskaplig tidskrift, 2016

The Ni3Al-alloy and its composites with different Cr3C2 contents were fabricated by a hot isostatic pressing (HIP) technique. The influences of Cr3C2 content on the microstructure, hardness and wear properties of the Cr3C2/Ni3Al composites were investigated by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) and wear tribometry. The results show that inter-diffusion occurs between the original Cr3C2 and the Ni3Al particles during the HIP process and the Cr3C2 particles partially transform into M7C3 (M=Cr, Fe, Ni) structures. Under specific friction and wear conditions, the wear resistance of the Cr3C2/Ni3Al composites is significantly improved due to the addition of Cr3C2 particles by about 4-10 times, compared to the Ni3Al alloy. In addition, the cutting and scraping effects of counter-part disks by the Cr3C2/Ni3Al composites decreases with increasing Cr3C2 addition, resulting in a reduction in wear rate of counter-part disks.

Hot isostatic pressing

Intermetallic compounds

Wear

Microstructure

Particle reinforced composites

Författare

L. H. Fu

University of Science and Technology Beijing

China Iron and Steel Research Institute Group

W. Han

China Iron and Steel Research Institute Group

Yan Jun Xie

China Iron and Steel Research Institute Group

Changhai Li

Chalmers, Material- och tillverkningsteknik, Yt- och mikrostrukturteknik

C. F. Dong

University of Science and Technology Beijing

L. Zhao

China Iron and Steel Research Institute Group

Z. L. Tian

China Iron and Steel Research Institute Group

Gongcheng Kexue Xuebao/Chinese Journal of Engineering

2095-9389 (ISSN)

Vol. 38 8 1145-1152

Ämneskategorier

Kompositmaterial och -teknik

DOI

10.13374/j.issn2095-9389.2016.08.014