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Ti6Al4V Heat Treatments (Titanium Alloy)

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Added on  2019-11-08

Ti6Al4V Heat Treatments (Titanium Alloy)

   Added on 2019-11-08

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Running head: LITERATURE REVIEWLiterature reviewName of the student:Name of the University:Author’s note
Ti6Al4V Heat Treatments (Titanium Alloy)_1
1LITERATURE REVIEWIntroduction:Transition materials like titanium are advanced metal having unique mechanicalproperties. However, there is lot of arguments regarding the appropriate technique that can beapplied to manufacture the metal due to the high melting point and high strength of the materials.Although many alternative technique are available for the fabrication of intermetallic structure oftitanium, however their use is often limited by high cost and lack of its application at the industrylevel (Leuders et al. 2013). As fabrication of metal is also being done by the use of selective lasermelting, this literature review aims to find the role of selective laser melting technique on themicrostructure and properties of the metal. This technique has been mainly chosen for evaluationbecause it is several advantages of the technique such as lesser steps in production and highefficiency of the material used. The outcome of the review can give clear idea about the strengthand limitation of the technique and the scope of its application in the manufacturing of titaniummaterials. Literature review:Microstructure and properties of Ti-SiC mixture fabricated by selective laser meltingTransition metals like silicides and carbides have advanced properties such as lowdensity, stiffness and environmental resistance. However, one challenge in manufacturingintermetallics is their high melting point (Tsai and Yeh 2014). Many well-developed methodsare available for the fabrication of metallic parts and the research by (Krakhmalev andYadroitsev 2014) proposed manufacturing titanium substrate by means of selective laser melting.The researcher tried fabricating the titanium substrate with titanium and silicon carbides by
Ti6Al4V Heat Treatments (Titanium Alloy)_2
2LITERATURE REVIEWselective melting of the Ti-SiC powder mixture. This was done by Ytterbiums fibre laser and thestructure and mechanical properties of metal was examined. The main purpose of adapting theselective laser technique was to find the correlation between microstructure and composition ofthe precursor powder. Mechanical properties were assessed by the parameters of hardness,indentation fracture toughness and abrasive wear resistance. The researchers also gave apromising approach to achieve structural homogeneity of the material.The examination of the top surface and longitudinal structure of metals by scanningelectron microscopy (SEM) showed crack networks on the surface and dark stripes were alsofound in areas enriched with Si and C. Gradient zone was also formed in all coating due topartial melting of the substrate. Hence, the overall conclusion from the study results was thatcomposite structure was successfully formed by selective melting however the irregularities thatwas observed includes agglomerates of SiC at interlayer and unequal distribution of elements inthe track. The study adequately presented the reasons for this anomaly. The agglomerationoccurred due to change in phase whereas the heterogeneous distribution was seen due to thepenetration of laser radiation on powder base. In the area mechanical properties, hardness of themetal was influenced by coatings containing high amount of SiC (Krakhmalev and Yadroitsev,2014). The strength of the study is that the research provided innovative technique to producemetals with high melting points. Secondly, the researcher also provided appropriate approachesto improve any anomaly in the process and enhance the homogeneity of the coating. Microstructural evolution of titanium during selective laser meltingAnother research study highlights the advantage of selective laser melting (SLM) on thedevelopment of the microstructure of Ti-6Al-4V. Selective laser melting has emerged as an
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