Defects and anomalies in powder bed fusion metal additive manufacturing

A Mostafaei, C Zhao, Y He, SR Ghiaasiaan… - Current Opinion in Solid …, 2022 - Elsevier
Metal additive manufacturing is a disruptive technology that is revolutionizing the
manufacturing industry. Despite its unrivaled capability for directly fabricating metal parts …

Material-structure-performance integrated laser-metal additive manufacturing

D Gu, X Shi, R Poprawe, DL Bourell, R Setchi, J Zhu - Science, 2021 - science.org
BACKGROUND Metallic components are the cornerstone of modern industries such as
aviation, aerospace, automobile manufacturing, and energy production. The stringent …

Role of porosity defects in metal 3D printing: Formation mechanisms, impacts on properties and mitigation strategies

S Wang, J Ning, L Zhu, Z Yang, W Yan, Y Dun, P Xue… - Materials Today, 2022 - Elsevier
Abstract Metal 3D printing (3DP), a state-of-the-art manufacturing technology that brings the
potential to fabricate complex structures at low cost and reduced energy consumption, has …

Additive manufacturing of nickel-based superalloys: A state-of-the-art review on process-structure-defect-property relationship

A Mostafaei, R Ghiaasiaan, IT Ho, S Strayer… - Progress in Materials …, 2023 - Elsevier
Fusion-based additive manufacturing (AM) has significantly grown to fabricate Nickel-based
superalloys with design freedom across multiple length scales. Several phenomena such as …

[HTML][HTML] Additive manufacturing of structural materials

G Liu, X Zhang, X Chen, Y He, L Cheng, M Huo… - Materials Science and …, 2021 - Elsevier
Additive manufacturing (AM), also known as three-dimensional (3D) printing, has boomed
over the last 30 years, and its use has accelerated during the last 5 years. AM is a materials …

Review on the correlation between microstructure and mechanical performance for laser powder bed fusion AlSi10Mg

L Zhao, L Song, JGS Macías, Y Zhu, M Huang… - Additive …, 2022 - Elsevier
As important structural materials widely used in aerospace and automotive industries,
aluminum alloys are perfect candidates for development of laser metal additive …

[HTML][HTML] 金属增材制造若干关键力学问题研究进展

廉艳平, 王潘丁, 高杰, 刘继凯, 李取浩, 刘长猛… - 力学进展, 2021 - lxjz.cstam.org.cn
金属增材制造是一种兼顾复杂结构和高性能构件成形需求的颠覆性制造技术, 在航空, 航天,
交通, 核电等领域具有广阔的应用前景和发展空间. 该技术大规模推广应用所面临的制造效率和 …

Critical instability at moving keyhole tip generates porosity in laser melting

C Zhao, ND Parab, X Li, K Fezzaa, W Tan, AD Rollett… - Science, 2020 - science.org
Laser powder bed fusion is a dominant metal 3D printing technology. However, porosity
defects remain a challenge for fatigue-sensitive applications. Some porosity is associated …

[HTML][HTML] Keyhole fluctuation and pore formation mechanisms during laser powder bed fusion additive manufacturing

Y Huang, TG Fleming, SJ Clark, S Marussi… - Nature …, 2022 - nature.com
Keyhole porosity is a key concern in laser powder-bed fusion (LPBF), potentially impacting
component fatigue life. However, some keyhole porosity formation mechanisms, eg, keyhole …

[HTML][HTML] Controlling process instability for defect lean metal additive manufacturing

M Qu, Q Guo, LI Escano, A Nabaa… - Nature …, 2022 - nature.com
The process instabilities intrinsic to the localized laser-powder bed interaction cause the
formation of various defects in laser powder bed fusion (LPBF) additive manufacturing …