Investigation of microstructure and mechanical properties of Hadfield steel-based composites
2023 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE credits
Student thesis
Abstract [en]
Hadfield steel is attractive for different applications, especially in cement, railways, and mining industries, due to its specific properties. Nevertheless, it suffers from low hardness and short life service under abrasive environments. The main purpose of this research work is to fabricate a new metal matrix composite (MMC) by reinforcing Hadfield steel with TiC and TiB2 particles. In this work, the ceramic reinforcement phases, TiC and TiB2, were successfully manufactured. The synergistic effect of the elevated hardness of these particles combined with the remarkable ductility of Hadfield steel renders the MMC a highly promising material for applications involving abrasive wear.
During this work, a comprehensive analysis of the microstructure was conducted, focusing on the size and dispersion of the reinforcements. Microstructural characterization shows a relatively uniform distribution of the reinforcing phases TiC and TiB2 in the Hadfield steel matrix. Furthermore, microhardness measurement and wear tests were conducted to assess the mechanical characteristics of the developed composites. The results show that the mechanical properties of the composites are improved compared with those of the unreinforced Hadfield steel.
Place, publisher, year, edition, pages
2023. , p. 61
Keywords [en]
Metal Matrix Composites (MMC), Hadfield steel, wear performance
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-101467OAI: oai:DiVA.org:ltu-101467DiVA, id: diva2:1800764
External cooperation
Sandvik
Subject / course
Student thesis, at least 30 credits
Educational program
Materials Engineering, master's level
Presentation
2023-09-01, 08:00 (English)
Supervisors
Examiners
2023-09-282023-09-272023-09-28Bibliographically approved