Abstract
ABSTRACT In the present work, Cu alloyed ductile iron was isothermally treated at five different temperatures (280°C, 300°C, 320°C, 350°C, and 380°C) for 1 h to obtain an ausferrite microstructure composing a very fine ferrite phase and carbon enriched austenite. Microstructural characteristics exhibited a high ultimate tensile strength of 950–1600 MPa of ADI comparable to or even stronger than forged steels. The bulk hardness was 460–288 HV10, higher than pearlite, but lower than pure martensitic. The tribological behaviour of ADI was investigated using a 10 mm pin diameter during sliding. Its friction coefficient decreased almost by half as compared with ductile iron due to its ausferritic morphology and carbon enrichment. Under oxidative and adhesive conditions, an austempered microstructure with very fine ferrite and high carbon austenite is most wear-resistant due to its adequate strength, toughness, and lubricative behaviour. Wear resistance of ADIs can be improved through tailoring microstructure through austempering.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
