The effect of heat input rate, hatch spacing, and focus offset upon microstructure, hardness, and roughness of EBM-manufactured Ti- 6Al-4V titanium alloy was studied via a factorial experiment. It had been found that a coarser microstructure is generated for high heat input and low line offset. Increasing the heat input or conversely decreasing the line offset leads to a higher lath thickness with consequent lower hardness. The roughness of the top surfaces decreases with the increase of the heat input and the focus offset or with the decrease of the line offset. On the other side the roughness of the side surfaces is dependant only from the heat input and it is proportional to the latter.

Influence of processing parameters on microstructure and roughness of electron beam melted Ti-6Al-4V titanium alloy / Prisco, Umberto; Astarita, Antonello; EL HASSANIN, Andrea; Franchitti, Stefania. - In: MATERIALS AND MANUFACTURING PROCESSES. - ISSN 1042-6914. - 34:15(2019), pp. 1753-1760. [10.1080/10426914.2019.1683576]

Influence of processing parameters on microstructure and roughness of electron beam melted Ti-6Al-4V titanium alloy

Umberto Prisco
;
Antonello Astarita;Andrea El Hassanin;Stefania Franchitti
2019

Abstract

The effect of heat input rate, hatch spacing, and focus offset upon microstructure, hardness, and roughness of EBM-manufactured Ti- 6Al-4V titanium alloy was studied via a factorial experiment. It had been found that a coarser microstructure is generated for high heat input and low line offset. Increasing the heat input or conversely decreasing the line offset leads to a higher lath thickness with consequent lower hardness. The roughness of the top surfaces decreases with the increase of the heat input and the focus offset or with the decrease of the line offset. On the other side the roughness of the side surfaces is dependant only from the heat input and it is proportional to the latter.
2019
Influence of processing parameters on microstructure and roughness of electron beam melted Ti-6Al-4V titanium alloy / Prisco, Umberto; Astarita, Antonello; EL HASSANIN, Andrea; Franchitti, Stefania. - In: MATERIALS AND MANUFACTURING PROCESSES. - ISSN 1042-6914. - 34:15(2019), pp. 1753-1760. [10.1080/10426914.2019.1683576]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/762505
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