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- Title
INVESTIGATION OF WEAR RESISTANCE OF COMPOSITE ALLOYS UNDER THE CONDITIONS OF GAS-ABRASIVE WEAR AT ELEVATED TEMPERATURES.
- Authors
ZHUDRA, A. P.
- Abstract
Given are the results of laboratory investigations of wear resistance of composite alloys, based on fused tungsten carbides WC + W2C (relite), under conditions of gas-abrasive wear. Given is the technical characteristic of laboratory stand OB-876Ts for tests of deposited metal for gas-abrasive wear. The scheme of tests was developed, maximum corresponding to real conditions of service of parts during the effect of abrasive flow within the temperature range of 25-450°C. It was established that wear of composite alloys bears a selective, cyclic character and does not essentially depend on properties and hardness of matrix at small attack angles. The application of tungsten carbide with spherical granules increases wear resistance of composite alloy, and the increase in temperature up to 400 °C considerably decreases it due to oxidation of carbide component of alloys. At room temperature the wear resistance of composite alloy 2.7 times exceeds the wear resistance of nickel carbide chromium alloy.
- Subjects
WEAR resistance; COMPOSITE materials; FRETTING corrosion; TUNGSTEN carbide; OXIDATION; CHROMIUM alloys
- Publication
Paton Welding Journal, 2014, Issue 11, p28
- ISSN
0957-798X
- Publication type
Article
- DOI
10.15407/tpwj2014.11.05