TY - JOUR
T1 - Phase evolution and mechanical behavior of a novel Ti-6.3Cu-2.2Fe-2.1Al alloy processed by wire-arc directed energy deposition
AU - Klein, Martin
AU - Staufer, Ella
AU - Zhang, Duyao
AU - Edtmaier, Christian
AU - Horky, Jelena
AU - Schmitz-Niederau, Martin
AU - Qiu, Dong
AU - Easton, Mark
AU - Klein, Thomas
PY - 2025/4/15
Y1 - 2025/4/15
N2 - Lacking Ti-alloy wires tailored for wire-arc directed energy deposition (waDED) restricts AM-component implementation. The Ti-Cu system is promising, but needs further alloying elements, to optimize the alloy performance. In this work waDED-processed Ti-6.3Cu-2.2Fe-2.1Al is characterized. Cu achieves a columnar to equiaxed transition. Microstructure consists of fine Ti2Cu-precipitates, β-matrix and α-plates, with varying morphologies along the deposit’s height due to differing thermal histories. The as-built sample exhibits a σY of 1039MPa but low ductility, fracturing intragranular.
AB - Lacking Ti-alloy wires tailored for wire-arc directed energy deposition (waDED) restricts AM-component implementation. The Ti-Cu system is promising, but needs further alloying elements, to optimize the alloy performance. In this work waDED-processed Ti-6.3Cu-2.2Fe-2.1Al is characterized. Cu achieves a columnar to equiaxed transition. Microstructure consists of fine Ti2Cu-precipitates, β-matrix and α-plates, with varying morphologies along the deposit’s height due to differing thermal histories. The as-built sample exhibits a σY of 1039MPa but low ductility, fracturing intragranular.
KW - Titanium alloys
KW - Additive manufacturing
KW - Phase transformations
KW - Mechanical properties
KW - Precipitation
U2 - 10.1007/s11661-025-07766-9
DO - 10.1007/s11661-025-07766-9
M3 - Article
SN - 1073-5623
VL - 56
SP - 1957
EP - 1963
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
IS - 6
ER -