Experimental and numerical investigation of 17–4PH stainless steel fabricated by laser powder bed fusion and hot isostatic pressing

Bae, Jaehoon; Kim, Min-kyeom; Oh, Eunsun; Yang, Kyung-Tae; Suhr, Jonghwan

doi:10.1088/2053-1591/ac2b55

Cited by 8 publications

(12 citation statements)

References 22 publications

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“…Consequently, LPBF-fabricated MMCs have been continuously studied to understand the mechanism of the microstructural evolution and, therefore, to design exceptional properties through a desirable combination of matrix and reinforcements [30][31][32][33]. However, the fabrication of MMCs using LPBF requires meticulous work to optimize not only the composition ratio of the composite materials but also the LPBF process [34]. A lack of a comprehensive understanding of the material and process-related phenomena may lead to significant issues because of the many material-and process-related variables [35][36][37].…”

Section: Introductionmentioning

confidence: 99%

“…Given the localized heat source employed in the LPBF, the exquisite and iterative stacking process of the melt pools can give rise to defects, such as numerous pores and cracks, distortion, and delamination, under inappropriate conditions [38][39][40][41]. The formation of these defects is influenced by factors including the powder spreading, particle However, the fabrication of MMCs using LPBF requires meticulous work to optimize not only the composition ratio of the composite materials but also the LPBF process [34]. A lack of a comprehensive understanding of the material and process-related phenomena may lead to significant issues because of the many material-and process-related variables [35][36][37].…”

Section: Introductionmentioning

confidence: 99%

“…Subsequently, the precise control of the volumetric energy density (VED) is essential for manufacturing defect-free MMCs, which is achieved through the meticulous design of the laser and powder-related parameters. The VED is defined as follows [34]:…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Strategies and Outlook on Metal Matrix Composites Produced Using Laser Powder Bed Fusion: A Review

Kim,

Fang,

Kim

et al. 2023

Metals

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Particle-reinforced metal matrix composites (MMCs) produced using the laser powder bed fusion (LPBF) technique have gained considerable attention because of their distinct attributes and properties in comparison with conventional manufacturing methods. Nevertheless, significant challenges persist with LPBF-fabricated MMCs: more design parameters over commercially available alloys and several defects resulting from inappropriate process conditions. These challenges arise from the intricate interaction of material- and process-related phenomena, requiring a fundamental understanding of the LPBF process to elucidate the microstructural evolution and underlying mechanisms of strengthening. This paper provides a comprehensive overview of these intricate phenomena and mechanisms, aiming to mitigate the process-related defects and facilitate the design of MMCs with enhanced mechanical properties. The material processing approach was suggested, covering from material design and LPBF to postprocessing. Furthermore, the role of in situ heat treatment on the microstructure evolution of MMCs was clarified, and several novel, potential strengthening theories were discussed for the LPBF-fabricated MMCs. The suggested strategies to address the challenges and design high-performance MMCs will offer an opportunity to develop promising LPBF-fabricated MMCs, while overcoming the material limitations of LPBF.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Strategies and Outlook on Metal Matrix Composites Produced Using Laser Powder Bed Fusion: A Review

Kim,

Fang,

Kim

et al. 2023

Metals

Self Cite

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“…These current technologies significantly enhance the performance and provide a good development for new materials, such as the study by Cai [14] shows that the tensile strength and plasticity of HIP (hot isostatic pressing) specimens are higher than those of SPS (spark plasma sintering) specimens. The HIP process can improve the mechanical properties of the product by reducing the porosity and recrystallizing microstructures [15]. Since HIP is carried out under the assistance of pressure, its sintering temperature can be reduced to close to the melting point of Cu, which significantly improves the sintering density.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation and verification of hot isostatic pressing densification process of W-Cu powder

Wang¹,

Wang²,

Wang³

2022

Mater. Res. Express

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Based on finite element method (FEM) and the plasticity theory, a numerical model is built to simulate the hot isostatic pressing (HIP) process of W-Cu powders, and the densification law of the compact in the process is analysed. The cross-experiment method is used to formulate an orthogonal optimization plan for the insulation temperature, the holding pressure and the insulation holding time. The contour map diagram of the relative density in the temperature and pressure plane is established, and the optimal parameter scheme is proposed by simulation results. Experiments are carried out under the best HIP scheme. Comparison of experimental results with simulation results indicates that the numerical model is accurate. The results indicate that the densification process of the compact is from the edge to the centre. The optimal hot isostatic pressing parameter scheme obtained by simulation is 950 °C/110 MPa/2 h, and the overall relative density of the compact can reach more than 96% under this scheme. Under optimal scheme, the maximum error between the simulation results and the test results of the relative density is 1.28%, whereas the average error is about 0.3%.

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“…Laser powder bed fusion (L-PBF)is the promising technique which is capable of building complex structures and prototypes with saving time and cost [1]. The L-PBF technique, however, requires a delicate design of the process in a multiple scale, because various defects can easily occur at the poor process conditions [2,3]. Therefore, understanding of the processin a melt pool scale is essential to build the products with high quality and properties [4].…”

Section: Introductionmentioning

confidence: 99%

Effect of Melt Pool and Particle Dynamics on As-built Qualities in Laser Powder Bed Fusion Process

Kim¹,

Kim²,

No³

et al. 2022

Asian Society for Precision Engineering and Nanotechnology (ASPEN 2022)

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Experimental and numerical investigation of 17–4PH stainless steel fabricated by laser powder bed fusion and hot isostatic pressing

Cited by 8 publications

References 22 publications

Strategies and Outlook on Metal Matrix Composites Produced Using Laser Powder Bed Fusion: A Review

Strategies and Outlook on Metal Matrix Composites Produced Using Laser Powder Bed Fusion: A Review

Numerical simulation and verification of hot isostatic pressing densification process of W-Cu powder

Effect of Melt Pool and Particle Dynamics on As-built Qualities in Laser Powder Bed Fusion Process

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