On the melt pool flow and interface shape of dissimilar alloys via selective laser melting

Yao, Liming; Xiao, Zhong; Ramesh, A.; Zhang, Yanmei

doi:10.1016/j.icheatmasstransfer.2023.106833

Cited by 15 publications

(6 citation statements)

References 33 publications

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“…Tang et al [ 57 ] proposed an SLM computational framework for simulating multiple materials, accounting for the physical details of multi-physics and multimetals such as composition diffusion. Through simulation and experiments, Yao et al [ 58 , 59 ] found that when IN718 powder is laser cladded on 316L substrate, the interface between IN718 and SS316 appears like a “fish scale” structure and produces curved grains. However, Yao et al did not explain the dissimilar materials’ melt pool flow from the conduction mode to the keyhole mode ( Figure 6 ).…”

Section: Multimetal Research Based On Powder Bed Fusionmentioning

confidence: 99%

Multimetal Research in Powder Bed Fusion: A Review

et al. 2023

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This article discusses the different forms of powder bed fusion (PBF) techniques, namely laser powder bed fusion (LPBF), electron beam powder bed fusion (EB-PBF) and large-area pulsed laser powder bed fusion (L-APBF). The challenges faced in multimetal additive manufacturing, including material compatibility, porosity, cracks, loss of alloying elements and oxide inclusions, have been extensively discussed. Solutions proposed to overcome these challenges include the optimization of printing parameters, the use of support structures, and post-processing techniques. Future research on metal composites, functionally graded materials, multi-alloy structures and materials with tailored properties are needed to address these challenges and improve the quality and reliability of the final product. The advancement of multimetal additive manufacturing can offer significant benefits for various industries.

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Section: Multimetal Research Based On Powder Bed Fusionmentioning

confidence: 99%

Multimetal Research in Powder Bed Fusion: A Review

et al. 2023

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“…Nevertheless, emerging technologies, including laser powder bed fusion (LPBF) and advanced simulation models, are showing promise in addressing the inherent challenges of AL-MMC production. As AL-MMC manufacturing remains a complex task, leveraging these innovations might pave the way for more efficient and robust production techniques [ 14 , 15 ]. Metal matrix composites (MMCs) exhibit enhanced material properties when reinforcement particles are incorporated, improving mechanical characteristics such as yield strength, tensile strength, creep resistance, and thermal stability.…”

Section: Metal Matrix Composite Materialsmentioning

confidence: 99%

Multi-Body Dynamic Analysis of Hydrostatic Bearing with the MMC Material in Micro-Nano Machining

Khaghani,

Ivanov,

Cheng

2023

Micromachines

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This study focuses on the analysis of a linear hydrostatic bearing using harmonic frequency response and harmonic response simulations. The aim is to evaluate the feasibility of replacing the existing alloy steel material with a metal matrix composite (MMC) in terms of its performance and dynamic characteristics for both the base and carriage parts. The simulation results indicate that the MMC material exhibits higher resonant frequencies and improved damping capabilities compared to the structural steel material. The higher resonant frequencies observed in the MMC material are attributed to its stiffness and structural properties. These properties contribute to increased natural frequencies and improved vibration damping characteristics. This suggests that incorporating the MMC material in the bearing design could enhance motion control, improving the ability to precisely control and manipulate the movement of components or systems. In the context of ultraprecision machining applications, incorporating the MMC material in the hydrostatic bearing design can also lead to a more accurate and controlled motion, resulting in improved precision and finer machining outcomes. The displacement analysis confirms that both materials meet the specifications provided by the manufacturer, supporting the viability of using MMC as an alternative. However, further experimental validation and considerations of material feasibility, manufacturing factors, and cost-effectiveness are necessary before implementing the MMC material in practical applications. Overall, this research highlights the potential benefits of MMC in the design of linear hydrostatic bearings, paving the way for enhanced performance in ultraprecision machining processes.

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“…This is because the corrosion-resistant alloy coating is very thin and not resistant to erosion, and the interface area between the two alloys is weak, which is likely to be the site of cracks due to local strain and cannot be used for a long time. Co-based alloys exhibit high temperature resistance, excellent wear resistance, and good wettability with nickel-based alloys during the laser cladding process, making them a viable and robust option for securely amalgamating these two metals [ 9 , 10 , 11 , 12 ]. As an alternative to these, in order to extend the service life of current valves, improve the metal’s erosion corrosion resistance, reduce plant downtime, and reduce operating costs [ 13 , 14 , 15 ], the IN625 valve core base is covered with 10 mm-thick CoCrMo through laser-based powder bed fusion (LPBF) technology.…”

Section: Introductionmentioning

confidence: 99%

“…the laser cladding process, making them a viable and robust option for securely amalgamating these two metals [9][10][11][12]. As an alternative to these, in order to extend the service life of current valves, improve the metal's erosion corrosion resistance, reduce plant downtime, and reduce operating costs [13][14][15], the IN625 valve core base is covered with 10 mm-thick CoCrMo through laser-based powder bed fusion (LPBF) technology.…”

Section: Introductionmentioning

confidence: 99%

Interface Hardness Analysis of between IN625 and CoCrMo Manufactured by Pulsed Wave Laser Powder Bed Fusion

Hoo,

Xiao,

Yao

et al. 2024

Micromachines

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The nuclear and petrochemical industries often require multi-metal parts that are corrosion-resistant, heat-resistant, and possess high strength to enhance equipment safety and reduce downtime. Additive manufacturing technology enables the rapid and flexible processing of multi-metal parts to meet these stringent demands. This study is aimed at investigating the interface hardness between CoCrMo/IN625 to determine optimal processing parameters that can be utilized in manufacturing reliable and durable multi-metal parts. The result indicates that when the volumetric energy density, Ev, is at or below 20 J/mm3, microfluidic forces are unable to sufficiently diffuse between the two metals, leading to insufficient diffusion, and the high hardness CoCrMo acts as a support, resulting in a significantly higher interface hardness. As Ev increases, intense recoil pressure within the microfluidic forces disrupts the melt pool, allowing for full diffusion between the two metals. The fully diffused high-hardness CoCrMo has been diluted by the low-hardness IN625, thus reducing the interface hardness. Considering the interface hardness, strength, and printing efficiency (time and energy consumption), we recommend a range of 35 J/mm3 < Ev ≤ 75 J/mm3. In this range, the average values for interface hardness and tensile strength of the samples are approximately 382 HV and 903 MPa, respectively.

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On the melt pool flow and interface shape of dissimilar alloys via selective laser melting

Cited by 15 publications

References 33 publications

Multimetal Research in Powder Bed Fusion: A Review

Multimetal Research in Powder Bed Fusion: A Review

Multi-Body Dynamic Analysis of Hydrostatic Bearing with the MMC Material in Micro-Nano Machining

Interface Hardness Analysis of between IN625 and CoCrMo Manufactured by Pulsed Wave Laser Powder Bed Fusion

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