Arthur, Nana KKSiyasiya, CPityana, Sisa LTlotleng, Monnamme2021-07-092021-07-092021-05Arthur, N.K., Siyasiya, C., Pityana, S.L. & Tlotleng, M. 2021. Microstructural response of Ti6Al4V ELI alloyed with molybdenum by direct energy deposition. <i>Journal of Materials Engineering and Performance.</i> http://hdl.handle.net/10204/120401059-94951544-1024https://doi.org/10.1007/s11665-021-05859-1http://hdl.handle.net/10204/12040Alloy development opens the way to create new materials for specialized processes, and attain materials that are usually difficult to acquire. Property enhancements and part performance is achievable in an exciting new way when this technique of producing materials is coupled with additive manufacturing technologies. This study explores the use of direct energy deposition technique of additive manufacturing processing for alloy development. The aim was to improve the ductility and subsequent part performance of LENS produced titanium alloys. In this study, the investigated heat inputs proved effective in producing homogenous molybdenum added Ti6Al4V microstructures. Consequently, the addition of the β-stabilizing alloying element, molybdenum, did not only result in the increased volume fraction of the β-phase but also the change from planar to cellular solidification. Thus, the hardness values for molybdenum additions of 10 mass percentage were found to be in the range of 200 ± 34 HV0.3, and this was attributed to the β-stabilizing and grain refining effect of refractory metals such as molybdenum.AbstractenBeta stabilizersDirected energy depositionFish scalingIn situ alloyingOmega phaseSolidification structuresTi6Al4VMicrostructural response of Ti6Al4V ELI alloyed with molybdenum by direct energy depositionArticleArthur, N. K., Siyasiya, C., Pityana, S. L., & Tlotleng, M. (2021). Microstructural response of Ti6Al4V ELI alloyed with molybdenum by direct energy deposition. <i>Journal of Materials Engineering and Performance</i>, http://hdl.handle.net/10204/12040Arthur, Nana KK, C Siyasiya, Sisa L Pityana, and Monnamme Tlotleng "Microstructural response of Ti6Al4V ELI alloyed with molybdenum by direct energy deposition." <i>Journal of Materials Engineering and Performance</i> (2021) http://hdl.handle.net/10204/12040Arthur NK, Siyasiya C, Pityana SL, Tlotleng M. Microstructural response of Ti6Al4V ELI alloyed with molybdenum by direct energy deposition. Journal of Materials Engineering and Performance. 2021; http://hdl.handle.net/10204/12040.TY - Article AU - Arthur, Nana KK AU - Siyasiya, C AU - Pityana, Sisa L AU - Tlotleng, Monnamme AB - Alloy development opens the way to create new materials for specialized processes, and attain materials that are usually difficult to acquire. Property enhancements and part performance is achievable in an exciting new way when this technique of producing materials is coupled with additive manufacturing technologies. This study explores the use of direct energy deposition technique of additive manufacturing processing for alloy development. The aim was to improve the ductility and subsequent part performance of LENS produced titanium alloys. In this study, the investigated heat inputs proved effective in producing homogenous molybdenum added Ti6Al4V microstructures. Consequently, the addition of the β-stabilizing alloying element, molybdenum, did not only result in the increased volume fraction of the β-phase but also the change from planar to cellular solidification. Thus, the hardness values for molybdenum additions of 10 mass percentage were found to be in the range of 200 ± 34 HV0.3, and this was attributed to the β-stabilizing and grain refining effect of refractory metals such as molybdenum. DA - 2021-05 DB - ResearchSpace DP - CSIR J1 - Journal of Materials Engineering and Performance KW - Beta stabilizers KW - Directed energy deposition KW - Fish scaling KW - In situ alloying KW - Omega phase KW - Solidification structures KW - Ti6Al4V LK - https://researchspace.csir.co.za PY - 2021 SM - 1059-9495 SM - 1544-1024 T1 - Microstructural response of Ti6Al4V ELI alloyed with molybdenum by direct energy deposition TI - Microstructural response of Ti6Al4V ELI alloyed with molybdenum by direct energy deposition UR - http://hdl.handle.net/10204/12040 ER -24666