Monel K-500 Alloy Research Articles

Experimental Research on Heating Performance of Monel K-500 Alloy

Monel K-500 alloy is an important nickel-based corrosion resistant material with increasingly wide range of application in the areas of aviation, navigation and petroleum engineering. Comparing to other corrosion resistant metal material and nonmetal material, Monel K-500 alloy has excellent corrosion resistant ability in different corrosion circumstances (include electrochemical and chemical corrosion) and good mechanical properties. However, Monel K-500 alloy is also a sensitive material to high temperature. Its heating schedule has significant effect on heating quality and subsequent hot-working character. In view of existing heating problems of Monel K-500 alloy such as over-burning or non-uniform heating in domestic manufacturing enterprises, different heating velocities have been used to investigate its performance in heating process. The research results can provide more scientific basis for the setting up of reasonable heating schedule.

Tribocorrosion behaviors of Ti–6Al–4V and Monel K500 alloys sliding against 316 stainless steel in artificial seawater

The tribocorrosion behaviors of Ti–6Al–4V and Monel K500 alloys sliding against 316 stainless steel were investigated using a ring-on-block test rig in both artificial seawater and distilled water. It is found that friction coefficients are in general larger in distilled water compared with seawater. The wear losses of Ti–6Al–4V and Monel K500 alloys are larger in seawater compared with distilled water. The mechanical action can destroy the passive film and increase the corrosion rate. The synergism effect between corrosion and wear occurs. The synergism action between corrosion and wear is related to the corrosion rate and with the increase of corrosion rate, the synergism becomes more important. 316 stainless steel suffers severe wear sliding against Monel K500 alloy compared with sliding against Ti–6Al–4V alloy in both distilled water and seawater.

7232. Structure and property correlation of plasma source ion implanted layers in Monel K-500 alloy: M Madapura et al,J Vac Sci Technol, A8, 1990, 2169–2172

7232. Structure and property correlation of plasma source ion implanted layers in Monel K-500 alloy: M Madapura et al,J Vac Sci Technol, A8, 1990, 2169–2172

Surface modification of monel K-500 by the plasma source ion implantation process

Summary The monel series of nickel base alloys (Ni-Cu type) are attractive for components like bearings and shafts operating in high magnetizing environments because of their non-magnetic characteristic coupled with superior corrosion and oxidation resistance at extreme service temperatures. Unfortunately, the current bearing technology is based on the use of two classes of materials, 5000 series alloy steels and 400 series stainless steels, both of which are magnetic. Thus, the successful operation of a magnetic device requires a new class of bearing materials. Some of the non-ferrous materials such as monels have not demonstrated superior wear characteristics as bearing materials. Plasma source ion implantation (PSII), a non-line-of-sight technology for implanting preferably gaseous species, is a new and innovative approach to surface modification of materials. The principal objective of the present investigation was to apply PSII technology to improve the wear characteristics of monels for developing a new class of bearing materials operating in highly magnetic environments. Monel K-500 alloy samples were nitrogen implanted by the PSII process and the modified layers were characterized by profilometry and optical metallography, low load microhardness testing, scanning Auger microscopy (SAM), pin-on-disk wear testing and scanning electron microscopy (SEM). The results of nitrogen implantation show a significant improvement in wear resistance of this alloy without any perceptible increase in surface hardness.