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@ARTICLE{Guo:645019,
author = {Guo, Yi and Liu, Yinghang and Song, Zhe and Ye, Jiafeng and
Zhu, Gaoming and Zeng, Xiaoqin and Wang, Leyun},
title = {{E}nhancing ductility of laser powder bed fusion
{T}i-6{A}l-4{V} alloys by molybdenum addition: {A} study on
microstructure and deformation mechanisms},
journal = {Additive manufacturing},
volume = {112},
issn = {2214-7810},
address = {Amsterdam [u.a.]},
publisher = {Elsevier},
reportid = {PUBDB-2026-00542},
pages = {104998},
year = {2025},
note = {Waiting for fulltext},
abstract = {The limited ductility of laser powder bed fusion (LPBF)
Ti-6Al-4V (Ti64) alloys, caused by their brittle
α'-martensitic microstructure, significantly restricts
their broader application. This study systematically
investigates the influence of Mo additions (0, 1, 3, and
$5 wt\%)$ on the microstructure evolution, deformation
mechanisms, and mechanical properties of LPBF Ti64 alloys.
Incorporation of Mo notably transforms the phase composition
from purely α'-martensitic (Ti64 and Ti64–1Mo) to a
multi-phase structure containing metastable β and α"
phases alongside α' (Ti64–3Mo and Ti64–5Mo). Ti64–3Mo
exhibits an optimal balance of mechanical properties,
achieving significant improvements in uniform elongation
$(9.5 \%)$ and maintaining high yield strength
(955 MPa). Enhanced ductility in Ti64–3Mo and Ti64–5Mo
is attributed to the synergistic activation of multiple
deformation mechanisms, including stress-induced martensite
transformation in metastable β, and twinning coupled with
multiple slip modes in the α' phase. However, early
activation of twinning prior to basal slip reduces yield
strength. These insights underscore the crucial role of Mo
as a compositional modifier, providing a practical approach
for engineering strength-ductility combinations in
additively manufactured titanium alloys.},
cin = {DOOR ; HAS-User / FS-PETRA-D},
cid = {I:(DE-H253)HAS-User-20120731 /
I:(DE-H253)FS-PETRA-D-20210408},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G3 - PETRA III (DESY) (POF4-6G3)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G3},
experiment = {EXP:(DE-H253)P-P21.2-20150101},
typ = {PUB:(DE-HGF)16},
doi = {10.1016/j.addma.2025.104998},
url = {https://bib-pubdb1.desy.de/record/645019},
}