TY - JOUR
T1 - Uniting high strength with large ductility in an additively manufactured fine-grained aluminum alloy
AU - Cha, Wenhao
AU - Li, Gan
AU - He, Xi
AU - Li, Jie
AU - Li, Daoxiu
AU - Liu, Xiangfa
AU - Zhu, Qiang
AU - Liu, Sida
PY - 2025/1/7
Y1 - 2025/1/7
N2 - Actualizing the near net-shaping of lightweight aluminum (Al) alloys with both superior mechanical performance and complex geometry remains challenging. To address this issue, novel Al–Ti–C–B (TCB) master alloy powders were tailored as effective inoculators and introduced into the AlSi10Mg alloy powders to promote the heterogeneous nucleation of α-Al during powder bed fusion using laser beam (PBF-LB), leading to pronounced heterogeneous microstructure with bimodal fine-grains and improved distribution of eutectic Si. The modified alloy with a more refined and homogeneous microstructure exhibited an excellent strength–ductility combination due to microstructure modification, outperforming most previously reported commercial Al–Si alloys. © 2025 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
AB - Actualizing the near net-shaping of lightweight aluminum (Al) alloys with both superior mechanical performance and complex geometry remains challenging. To address this issue, novel Al–Ti–C–B (TCB) master alloy powders were tailored as effective inoculators and introduced into the AlSi10Mg alloy powders to promote the heterogeneous nucleation of α-Al during powder bed fusion using laser beam (PBF-LB), leading to pronounced heterogeneous microstructure with bimodal fine-grains and improved distribution of eutectic Si. The modified alloy with a more refined and homogeneous microstructure exhibited an excellent strength–ductility combination due to microstructure modification, outperforming most previously reported commercial Al–Si alloys. © 2025 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
KW - Additive manufacturing
KW - AlSi10Mg alloy
KW - Al–Ti–C–B master alloy
KW - grain refinement
KW - powder bed fusion–laser beam
UR - http://www.scopus.com/inward/record.url?scp=105002495813&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-105002495813&origin=recordpage
U2 - 10.1080/21663831.2024.2449175
DO - 10.1080/21663831.2024.2449175
M3 - RGC 21 - Publication in refereed journal
SN - 2166-3831
JO - Materials Research Letters
JF - Materials Research Letters
ER -
