The work presented in this paper examines additions of titanium and magnesium on their own and together in 1030. Mechanical testing, thermal analysis, and metallography were conducted on the heats. Additions of both magnesium and titanium produced the highest mechanical properties. The solidification structure was refined by all additions. Thermal analysis determined that magnesium increased the solidus.
Inclusion analysis found TiN formed in all heats containing titanium. The TiN particles initiated on complex magnesium-aluminum oxides. There is strong evidence that the magnesium additions form oxides that assist the formation of TiN, which then assists the formation of δ-ferrite during freezing, with the final result being better properties.
Presenter: Professor Robert Tuttle, Ph.D.
Saginaw Valley State University
Dr. Robert Tuttle is a professor in mechanical engineering at Saginaw Valley State University. He received his doctorate in metallurgical engineering from the University of Missouri-Rolla in 2004. Dr. Tuttle teaches Principles of Engineering Materials, Manufacturing Processes and Systems, Electron Microscopy, and Metalcasting. He advises the student chapter of AFS and at SVSU. He currently serves as the Chairman of the Steel Division, and is very involved with the Saginaw Valley Chapter of AFS. He is also a member of AIST, ASEE, and ASM. Dr. Tuttle has published over fifty papers on steel grain refinement, metalcasting, and refractories. His primary research interests are ferrous molten metal processing, nondestructive testing, and failure analysis. He has been the recipient of a 2008 Ruby Award, the Earl Warrick Award for Research Excellence, the 2015 Steel Division Best Paper, the 2015 American Foundry Society Applied Research Award, and the 2019 Steel Division Individual Service Award.
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