Abstract
Effect of chromium on grain refinement of LM11 aluminium alloy sand castings was investigated. Three sets of aluminium alloy with different chromium content and one chromium free as reference were produced in 100 kg electric resistance furnace. Chromium addition was increased up to 0.23%. Mechanical properties and microstructure of the alloys were determined using standard methods. The grain refined castings gave higher mechanical properties than the non–grain refined casting. Casting with 0.20% chromium gave the highest mechanical Properties. Castings refined with chromium showed higher hardness and Ultimate tensile strength (UTS) values of 57 HB and 229 MPa than those refined with titanium which showed 54 HB and 220 MPa respectively. Chromium can be a good substitute for titanium as a grain refining material, when introduced at optimum quantity into Aluminium alloy-LM11 sand casting.
Sign-in/Register to access full text options 
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.
