Revealing formation mechanism of end of process depression in laser powder bed fusion by multi-physics meso-scale simulation DOI Creative Commons
Haodong Chen, Xin Lin, Yajing Sun

и другие.

Virtual and Physical Prototyping, Год журнала: 2024, Номер 19(1)

Опубликована: Март 13, 2024

Unintended end-of-process depression (EOPD) commonly occurs in laser powder bed fusion (LPBF), leading to poor surface quality and lower fatigue strength, especially for many implants. In this study, a high-fidelity multi-physics meso-scale simulation model is developed uncover the forming mechanism of defect. A defect-process map EOPD phenomenon obtained using model. It found that formation mechanisms are different under distinct regions process parameters. At low scanning speeds keyhole mode, long-lasting recoil pressure large temperature gradient easily induce EOPD. While at high shallow molten pool morphology solidification rate allow evolve into an quickly. Nevertheless, conduction Marangoni effects along with faster Finally, 'step' variable power strategy proposed optimise defects case volumetric energy density speeds. This work provides profound understanding valuable insights control LPBF fabrication.

Язык: Английский

Influence of tool rotational speed on mechanical and corrosion behaviour of friction stir processed AZ31/Al2O3 nanocomposite DOI Creative Commons
Ashish Kumar,

Virendra Pratap Singh,

Akhileshwar Nirala

и другие.

Journal of Magnesium and Alloys, Год журнала: 2023, Номер 11(7), С. 2585 - 2599

Опубликована: Июль 1, 2023

Nano-sized reinforcements improved the mechanical characteristics efficiently by promoting more implicit particle hardening mechanisms compared to micron-sized reinforcements. particles lessen critical solidification velocity for swamp and thus offers better dispersal. In present investigation, friction stir processing (FSP) is utilized produce AZ31/Al2O3 nanocomposites at various tool rotation speeds (i.e., 900, 1200, 1500 rpm) with an optimized 1.5% volume alumina (Al2O3) reinforcement ratio. The corrosion behavior of AZ31/Al2O3-developed was investigated that AZ31 base alloy. alloy experienced a comprehensive dynamic recrystallization during FSP, causing substantial grain refinement. Grain-size strengthening primary factor contributed enhancement in strength fabricated nanocomposite. Tensile yield values were lower than those metal matrix, although upward trend both has been observed increase speed. An 19.72% hardness along superior resistance achieved rotational speed rpm. currents (Jcorr) all samples dropped speed, contrast potentials (Ecorr), which increased. Jcorr 42.3%, 56.8%, 65.5% chosen rotating rpm, respectively. processed have addressed this manuscript not given sufficient attention existing literature. Further, work effective choice quality assurance FSP process nanocomposites. obtained results are relevant development lightweight automobile aerospace structures components.

Язык: Английский

Процитировано

26

Heterostructured metal matrix composites for structural applications: a review DOI
Lei Zhao, Wangshu Zheng, Ying Hu

и другие.

Journal of Materials Science, Год журнала: 2024, Номер 59(22), С. 9768 - 9801

Опубликована: Янв. 14, 2024

Язык: Английский

Процитировано

16

Strengthening aluminum matrix composite with additively manufactured 316L stainless steel lattice reinforcement: Processing methodology, mechanical performance and deformation mechanism DOI Creative Commons
Atef Hamada,

Elsayed Hamza Mansour,

Matias Jaskari

и другие.

Journal of Materials Research and Technology, Год журнала: 2024, Номер 29, С. 1087 - 1101

Опубликована: Янв. 21, 2024

This study investigates various processing approaches, interface characteristics, and mechanical properties of an aluminum (Al) matrix composite reinforced with additively manufactured (AM) 316L stainless-steel (SS) lattice. The AM-316L-SS lattice, boasting a 30 % infill density, was fabricated using the laser powder bed fusion technique. Al-matrix integrated reinforcement through experimentation involving pre-stirring molten Al under pressurized unpressurized die-casting conditions. A well-bonded interface, cohesive regions, obtained in pre-stirred structures. In contrast, regions decohesion were displayed cast structures without pre-stirring, leading to presence pores manifestation imperfect bond interfaces. Compression tests conducted on sound demonstrated enhanced properties, compressive strength approximately 163 MPa, significantly higher than that pure (approximately 80 MPa). Localized cracking initiated by stress gradients plastic deformation, microcrack propagation into Al-matrix.

Язык: Английский

Процитировано

13

Revolutionizing Medical Implant Fabrication: Advances in Additive Manufacturing of Biomedical Metals DOI Creative Commons
Yu-Hua Li, Deyu Jiang, Rui Zhu

и другие.

International Journal of Extreme Manufacturing, Год журнала: 2024, Номер 7(2), С. 022002 - 022002

Опубликована: Ноя. 14, 2024

Highlights Exploring personalized biomedical metal implants through additive manufacturing (AM). Presenting new load-bearing and biodegradable alloys for implants. Showcasing AI 4D printing advancements in material properties. AM’s roles various medical fields. Highlighting perspectives of implant technology improved patient care.

Язык: Английский

Процитировано

13

Enhancing the room-temperature plasticity of magnesium alloys: Mechanisms and strategies DOI Creative Commons
Lu Zhang, Qian Yuan, Jun Tan

и другие.

Journal of Magnesium and Alloys, Год журнала: 2024, Номер unknown

Опубликована: Дек. 1, 2024

Язык: Английский

Процитировано

12

Microstructure and mechanical properties of stainless steel addictively manufactured via laser powder bed fusion in high-dense process parameter window DOI
Guoliang Huang, Huan Chen,

Zhaodandan Ma

и другие.

Materials Science and Engineering A, Год журнала: 2025, Номер unknown, С. 148033 - 148033

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

1

Investigation of microstructure and mechanical properties of GWZ1031K alloy additively manufactured by cold metal transfer-based wire-arc directed energy deposition DOI

Guangqing Li,

Yunlong Li, Zhanyong Zhao

и другие.

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 179652 - 179652

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

1

Challenges and Developments in Wire Arc Additive Manufacturing of Steel: A Review DOI Creative Commons

Mohamed Dekis,

Mahmoud Tawfik, Mohamed Egiza

и другие.

Results in Engineering, Год журнала: 2025, Номер unknown, С. 104657 - 104657

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

1

Achieving fully equiaxed grain microstructure and isotropic mechanical properties in wire arc additive-manufactured Mg-Y-Nd-Zr alloys DOI
Dong Ma,

Chunjie Xu,

Yuanshen Qi

и другие.

Journal of Alloys and Compounds, Год журнала: 2023, Номер 962, С. 171041 - 171041

Опубликована: Июнь 19, 2023

Язык: Английский

Процитировано

23

Recent progress in the research on magnesium and magnesium alloy foils: A short review DOI

Qiuyan Shen,

Yongxing Ba,

Peng Zhang

и другие.

International Journal of Minerals Metallurgy and Materials, Год журнала: 2024, Номер 31(5), С. 842 - 854

Опубликована: Май 1, 2024

Язык: Английский

Процитировано

9