We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
STUDIES ON THE EFFECTS OF NIOBIUM ON SINTERING AND PROPERTIES OF MIM 440C MADE BY PREALLOY AND MASTER-ALLOY ROUTES.
- Authors
Kearns, Martin A.; Johnston, Mary-Kate; Murray, Keith; Davies, Paul A.; Ryabinin, Viacheslav; Gonzalez, Erainy
- Abstract
Metal injection molding is being adopted for the production of an increasing variety of components used in diverse applications. One o f the most versatile alloys in use is 440C martensitic stainless steel that offers high hardness and good corrosion resistance. This combination is suited to service in automotive fuel-injector parts, medical pliers, and a range of tool parts e.g., in textile machinery. Achieving reproducible properties and consistent hardness requires close control of carbon levels. There are a number of variants of 440C in use today: some with enhanced carbon levels to achieve higher hardness, and some with additions of niobium that are claimed to increase the sintering-process window for the alloy. In this study, we examined the sintering behavior, at different temperatures, of 440C and 440C + Nb made by prealloy and master-alloy routes. Differences in hardness and mechanical properties are discussed with reference to chemical composition and the microstructures of sintered parts.
- Publication
International Journal of Powder Metallurgy, 2016, Vol 52, Issue 1, p15
- ISSN
0888-7462
- Publication type
Academic Journal