Design and Processing of FGCM Materials for Applications Subjected to Intensive Abrasive Wear

E-ISSN： 1662-9795|2017|750|137-141

ISSN： 1013-9826

Source： Key Engineering Materials, Vol.2017, Iss.750, 2017-09, pp. : 137-141

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Abstract

The present work shows the design criteria of FGCM, respectively selection criteria of PM (Powder Metallurgy) matrix, and use of reinforcement particles in correlation with the mechanical stresses resulting in moulds and punches used for steel cold extrusion, powder compaction, sheet metal stamping and series production of parts processed with these tools. Therefore, sintered and repressed state are analysed, and the microstructural and mechanical properties of steel powders used for matrices development, grade High Speed Steels (HSS), AISI M2 and AISI M4, and low alloyed steel powders Ancorsteel 2000 and Ancorsteel 4600 V are defined. Also there are analysed the physical and mechanical properties of the reinforcement particles TiC, WC, Al₂O_3,B₄C, SiC, etc. Are presented the manufacturing methods, the technological parameters for development of functionally graded materials in vertical and horizontal plans, compacting to 500-600 MPa,, sintering temperature to 1050 °C for SiC reinforcement and 1100-1150 °C for matrix reinforced with Al₂O₃ , repressing to 600 MPa/1100 °C of sintered preforms, heat treatment and wear properties of FGCM materials as Ancorsteel 2000 and Ancorsteel 4600 reinforced with Al₂O₃ and SiC particles