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A study on the chemical and microstructural optimization of the Ti-48-2-2 alloy processed by Electron Beam Melting.

Galati, Manuela;  Ghibaudo, Cristian;  Rizza, Giovanni;  Wartbichler, Reinhold;  Mayer, Svea;  Iuliano, Luca;  Clemens, Helmut;  Ugues, Daniele;  Biamino, Sara;
Engineering titanium aluminide (TiAl) alloys are a family of intermetallic materials that, thanks to their outstanding specific mechanical properties, attracted significant attention for high-temperature automotive and aerospace applications. One of the key-points for the introduction of TiAl alloys..

A study on the chemical and microstructural optimization of the Ti 48 2 2 alloy processed by Electron Beam Melting.

Galati, Manuela;  Ghibaudo, Cristian;  Rizza, Giovanni;  Wartbichler, Reinhold;  Mayer, Svea;  Iuliano, Luca;  Clemens, Helmut;  Ugues, Daniele;  Biamino, Sara;
Engineering titanium aluminide (TiAl) alloys are a family of intermetallic materials that, thanks to their outstanding specific mechanical properties, attracted significant attention for high-temperature automotive and aerospace applications.
Uploaded on January 13, 2022

Combined Hot Isostatic Pressing and Rapid Quenching as a post processing option for AM parts.

Ugues, Daniele;  Bassini, Emilio;  Marchese, Giulio;  Sivo, Antonio;  Martelli, Pietro Antonio;
Hot isostatic pressing (HIP) is a post processing step commonly applied to Additive Manufactured (AM) parts, in order to increase their performances. In some sector HIP is a mandatory step of the AM parts fabrication route, e.g. aeronautic field.
Uploaded on January 13, 2022

October 29, 2020 (v1) Poster Open Access.

Influence of the Process Parameters on the Densification and Microstructure of Ni-based Superalloys with Different Amount of γ′ Former Alloying Elements Processed by SLM.

Marchese, Giulio; Parizia, Simone; Sivo, Antonio; Bassini, Emilio; Calignano, Flaviana; Biamino, Sara; Ugues, Daniele;
This works is focused on the production of Nickel superalloys by Selective Laser Melting. It is investigated how different process parameters affects the densification and microstructure of different Nickel superalloys characterized by increasing amounts of γ′ former alloying...

Uploaded on October 29, 2020

December 2, 2021 (v1) Presentation Open Access

On the Evolution of Banded Microstructures in an Electron Beam Melted Ti 48Al 2Cr 2Nb Alloy.

Wartbichler, Reinhold;  Clemens, Helmut;  Mayer, Svea;  Ghibaudo, Cristian;  Rizza, Giovanni;  Galati, Manuela;  Iuliano, Luca;  Biamino, Sara;  Ugues, Daniele;
Intermetallic γ‐TiAl based alloys offer outstanding creep properties, high specific strength and sufficient oxidation resistance at application temperature in the range from 600 to 800 °C. These properties make them prosperous candidatesto substitute heavy Ni‐based alloys ...

Uploaded on January 13, 2022

November 10, 2021 (v1) Journal article Open Access

On the Formation Mechanism of Banded Microstructures in Electron Beam Melted Ti–48Al–2Cr–2Nb and the Design of Heat Treatments as Remedial Action.

Wartbichler, Reinhold;  Clemens, Helmut;  Mayer, Svea;  Ghibaudo, Cristian;  Rizza, Giovanni;  Galati, Manuela;  Iuliano, Luca;  Biamino, Sara;  Ugues, Daniele;
The formation mechanism of banded microstructures of an electron beam melted engineering intermetallic Ti–48Al–2Cr–2Nb alloy, the solidification behavior, and the heat treatment response are investigated via a process parameter study. Scanning electron microscopy, hardness testing,..

Uploaded on January 13, 2022
Published in Advanced Engineering Materials, vol. 23, issue 12.

December 2, 2021 (v1) Presentation Open Access

A comparison of different approaches to study the porosity and surface defects for Electron Beam Melting.

Ghibaudo, Cristian;  Rizza, Giovanni;  Marchese, Giulio;  Galati, Manuela;  Iuliano, Luca;  Ugues, Daniele;  Biamino, Sara;
The high power obtainable by the EBM and the pre-heating temperature (e.g., around 750 °C - 1100 °C) makes this process interesting for thermal crack susceptible materials such as γ-TiAl alloys and Ni-based superalloys with high contents of γ′. In this work, γ-TiAl (T..

Uploaded on January 13, 2022

February 15, 2022 (v1) Journal article Open Access

Effects of the solution and first aging treatment applied to as-built and post-HIP CM247 produced via laser powder bed fusion (LPBF).

Bassini, Emilio;  Sivo, Antonio;  Martelli, Pietro Antonio;  Rajczak, Ewa;  Marchese, Giulio;  Calignano, Flaviana;  Biamino, Sara;  Ugues, Daniele;
In this work CM247LC, a low weldable Ni-Based alloy, was produced using selective laser melting (SLM). Despite the initial process parameter optimization, the low defect volume fraction was still uncompliant with manufacturing standards. This condition is principally caused by the high ...
Uploaded on March 4, 2022
Published in Journal of Alloys and Compounds, vol. 905, pp. 164213-164223.

December 2, 2021 (v1) Presentation Open Access

γ-TiAl powder properties and their processability by Electron Beam Melting.

Ghibaudo, Cristian;  Sivo, Antonio;  Marchese, Giulio;  Ugues, Daniele;  Biamino, Sara;
In powder bed additive manufacturing technique, the powder characteristics can determine the success or the failure of the job. In the Electron Beam Melting (EBM) process is generally used spherical powder with a particular size distribution of 40-150µm.
Uploaded on January 13, 2022