Sibisi, Percival NPopoola, APIArthur, Nana KKPityana, Sisa L2020-10-052020-10-052020-03Sibisi, P.N. et al. 2020. Review on direct metal laser deposition manufacturing technology for the Ti-6Al-4V alloy. International Journal of Advanced Manufacturing Technology, vol. 107: 1163-11780268-37681433-3015DOI: https://doi.org/10.1007/s00170-019-04851-3https://link.springer.com/article/10.1007/s00170-019-04851-3https://rdcu.be/b747ahttp://hdl.handle.net/10204/11604Copyright: 2020 Springer. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website: https://doi.org/10.1007/s00170-019-04851-3 A free fulltext non-print version of the article can be viewed at https://rdcu.be/b747aDirect laser metal deposition (DLMD) is a breaking edge laser-based additive manufacturing (LAM) technique with the possibility of changing the perception of design and manufacturing as a whole. It is well suitable for building and repairing applications in the aerospace industry which usually requires high level of accuracy and customization of parts; this technique enables the fabrication of materials known to pose difficulties during processing such as titanium alloys. Ti-6Al-4V, which is the most employed titanium-based alloy is one of the materials that are most explored for additive manufacturing process. However, this process is currently at its pioneer stage and very little is known about the fundamental metallurgy and physio-chemical basis that govern the process. Currently, the major problems faced in additive manufacturing include evolution of residual stresses leading to deformed parts and formation of defects such as pores and cracks which are detrimental to the quality of deposits. The presence of these unwanted defects on additively manufactured parts depends on the complex mechanisms taking place in the melt pool during melting, cooling, and solidification which are dependent on processing variables. In addition, during fabrication, some feedstock powder does not melt and thus does not make up part of the final product. The present text entails classification of LAM technologies, operational principles of DLMD, feedstock quality requirements, material laser interaction mechanism, and metallurgy of Ti-6AL-4V alloy.enDirect laser metal depositionDLMSLaser-based additive manufacturingLAMProcess variablesPowder recyclingTi-6Al-4VArticleSibisi, P. N., Popoola, A., Arthur, N. K., & Pityana, S. L. (2020). Review on direct metal laser deposition manufacturing technology for the Ti-6Al-4V alloy. http://hdl.handle.net/10204/11604Sibisi, Percival N, API Popoola, Nana KK Arthur, and Sisa L Pityana "Review on direct metal laser deposition manufacturing technology for the Ti-6Al-4V alloy." (2020) http://hdl.handle.net/10204/11604Sibisi PN, Popoola A, Arthur NK, Pityana SL. Review on direct metal laser deposition manufacturing technology for the Ti-6Al-4V alloy. 2020; http://hdl.handle.net/10204/11604.TY - Article AU - Sibisi, Percival N AU - Popoola, API AU - Arthur, Nana KK AU - Pityana, Sisa L AB - Direct laser metal deposition (DLMD) is a breaking edge laser-based additive manufacturing (LAM) technique with the possibility of changing the perception of design and manufacturing as a whole. It is well suitable for building and repairing applications in the aerospace industry which usually requires high level of accuracy and customization of parts; this technique enables the fabrication of materials known to pose difficulties during processing such as titanium alloys. Ti-6Al-4V, which is the most employed titanium-based alloy is one of the materials that are most explored for additive manufacturing process. However, this process is currently at its pioneer stage and very little is known about the fundamental metallurgy and physio-chemical basis that govern the process. Currently, the major problems faced in additive manufacturing include evolution of residual stresses leading to deformed parts and formation of defects such as pores and cracks which are detrimental to the quality of deposits. The presence of these unwanted defects on additively manufactured parts depends on the complex mechanisms taking place in the melt pool during melting, cooling, and solidification which are dependent on processing variables. In addition, during fabrication, some feedstock powder does not melt and thus does not make up part of the final product. The present text entails classification of LAM technologies, operational principles of DLMD, feedstock quality requirements, material laser interaction mechanism, and metallurgy of Ti-6AL-4V alloy. DA - 2020-03 DB - ResearchSpace DP - CSIR KW - Direct laser metal deposition KW - DLMS KW - Laser-based additive manufacturing KW - LAM KW - Process variables KW - Powder recycling KW - Ti-6Al-4V LK - https://researchspace.csir.co.za PY - 2020 SM - 0268-3768 SM - 1433-3015 T1 - Review on direct metal laser deposition manufacturing technology for the Ti-6Al-4V alloy TI - Review on direct metal laser deposition manufacturing technology for the Ti-6Al-4V alloy UR - http://hdl.handle.net/10204/11604 ER -