TY - GEN
T1 - Development of High Strength Ti-Cu based alloys with Equiaxed Grain Growth Produced via Plasma Metal Deposition
AU - Staufer, Ella
AU - Edtmaier, Christian
AU - Ballok, Elisabeth
AU - Horky, Jelena
AU - Klein, Thomas
AU - Zhang, Duyao
AU - Easton, Mark
AU - Schmitz-Niederau, Martin
PY - 2024/10/2
Y1 - 2024/10/2
N2 - The growing demand for titanium alloys, particularly in the aerospace industry, arises from their remarkable strength-to-weight ratio. However, the commonly used Ti-6Al-4V (Ti64) alloy exhibits columnar grain growth after additive manufacturing, such as powder bed fusion or direct energy deposition, resulting in anisotropic mechanical properties. To overcome this, Ti-Cu-based alloys are introduced for equiaxed grain growth, but their mechanical properties fell short of Ti64. Ternary and quaternary alloying elements (Fe and Cr) are incorporated to enhance mechanical properties. Firstly, several alloys (Ti-6.5Cu-xCr-yFe) produced via powder hot-extrusion exhibit promising microstructure under light microscopy and SEM. Hardness and tensile strength are improved, even exceeding the tensile strength of Ti64. The most promising ones underwent the blown-powder Plasma Metal Deposition process for in-situ alloying, revealing fine microstructures, equiaxed grains, and increased tensile strength. These findings highlight their potential for aerospace applications, presenting isotropic mechanical properties and dense samples.
AB - The growing demand for titanium alloys, particularly in the aerospace industry, arises from their remarkable strength-to-weight ratio. However, the commonly used Ti-6Al-4V (Ti64) alloy exhibits columnar grain growth after additive manufacturing, such as powder bed fusion or direct energy deposition, resulting in anisotropic mechanical properties. To overcome this, Ti-Cu-based alloys are introduced for equiaxed grain growth, but their mechanical properties fell short of Ti64. Ternary and quaternary alloying elements (Fe and Cr) are incorporated to enhance mechanical properties. Firstly, several alloys (Ti-6.5Cu-xCr-yFe) produced via powder hot-extrusion exhibit promising microstructure under light microscopy and SEM. Hardness and tensile strength are improved, even exceeding the tensile strength of Ti64. The most promising ones underwent the blown-powder Plasma Metal Deposition process for in-situ alloying, revealing fine microstructures, equiaxed grains, and increased tensile strength. These findings highlight their potential for aerospace applications, presenting isotropic mechanical properties and dense samples.
UR - http://www.scopus.com/inward/record.url?scp=85218503043&partnerID=8YFLogxK
U2 - 10.59499/EP246278391
DO - 10.59499/EP246278391
M3 - Chapter in a published conference proceeding
AN - SCOPUS:85218503043
T3 - Proceedings - Euro PM 2024 Congress and Exhibition
BT - Proceedings - Euro PM 2024 Congress and Exhibition
PB - European Powder Metallurgy Association (EPMA)
T2 - 2024 European Powder Metallurgy Congress and Exhibition, Euro PM 2024
Y2 - 29 September 2024 through 2 October 2024
ER -