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Title: Carbides composite surface layers produced by (PTA)

The plasma transferred arc technique was applied to deposit a composite layer of nickel base with tungsten carbide in powder form on to surface of low alloy steel 18G2A type according to polish standard. Results showed that, plasma transferred arc hard facing process was successfully conducted by using Deloro alloy 22 plus tungsten carbide powders. Maximum hardness of 1489 HV and minimum dilution of 8.4 % were achieved by using an arc current of 60 A. However, when the current was further increased to 120 A and the dilution increases with current increase while the hardness decreases. Microstructure of the nickel base deposit with tungsten carbide features uniform distribution of reinforcement particles with regular grain shape half - dissolved in the matrix.
Authors:
 [1] ; ;  [2] ;  [3]
  1. MechanicalEng.,HIHM,Gharian (Libya)
  2. Materials and Metallurgical Eng., UOT, Tripoli (Libya)
  3. Industrial Research Centre,Tripoli (Libya)
Publication Date:
OSTI Identifier:
22261725
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1569; Journal Issue: 1; Conference: 3. international advances in applied physics and materials science congress, Antalya (Turkey), 24-28 Apr 2013; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; DEPOSITS; DILUTION; DISTRIBUTION; HARD FACING; HARDNESS; LAYERS; LOW ALLOY STEELS; MICROSTRUCTURE; NICKEL; PARTICLES; PLASMA; POWDERS; TUNGSTEN CARBIDES