Study On Wear Behaviors Of Ni3al/ Cr-Carbides Cladding Layer On High Strength Steel Substrate
Paper in proceedings, 2014

A cladding layer of Ni3Al matrix composite reinforced with 18 vol. % Cr-carbides was applied by using tungsten inert gas (TIG) welding process on high strength steel substrate. The filler metal as welding wire prepared by horizontal continuous casting process with a composition of Ni- 2.5C-30Cr-9Al-0.02B (in wt. %) is used. A bulk material of NAC-alloy composite with 18 vol. % Cr3C2-particles produced by Hot Isostatic Pressing (HIP) was also investigated as a reference material. The composition of NAC-alloy is Ni-9.87Al-11.63Fe-0.50Mn-0.50Ti-0.2B in weight percentage. The pin-on-disk (POD) tribometer tests were carried out at room temperature in dry sliding condition at a pressure of 2.83 MPa (20N). The results revealed that Ni3Al/ Cr-carbides cladded layer by TIG process improved wear properties significantly with very low values of the friction coefficient (0.13 ± 0.02) and the specific wear rate (0.162 x 10-5 mm3/N·m) as compared to the reference HIP processed composite with the friction coefficient (0.68 ± 0.02) and the specific wear rate (0.908 x10-5 mm3/N·m) under the same testing conditions.

Friction coefficient

Sliding wear

Cladding

Intermetallics

Specific wear rate

Author

Karin Anne Xia Gong

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

Advanced Materials Research (2014)

Vol. Vol. 936 pp 1273-1282

Subject Categories

Materials Engineering

Areas of Advance

Materials Science

More information

Created

10/6/2017