Rapid prediction of real-time thermal characteristics, solidification parameters and microstructure in laser directed energy deposition (powder-fed additive manufacturing)

Huang, Yuze; Ansari, Mohammad; Asgari, Hamed; Farshidianfar, Mohammad H.; Sarker, Dyuti; Khamesee, Mir Behrad; Toyserkani, Ehsan

doi:10.1016/j.jmatprotec.2019.116286

Cited by 74 publications

(32 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This result agrees with the literature [24]. Equation (10) was originally suggested using a simulation result and validated with experimental data of other literatures; when the cooling rate was low, about 40 K/s, the validated SDAS have 30% error with the simulation result. However, in the higher cooling rate above the 40 K/s, the simulation results were more accurate.…”

Section: Experimental Validation Using the Numerical Modelsupporting

confidence: 90%

“…The average errors of the other peak temperatures, between the simulation and experiments, under the two IPT conditions were approximately 8.33% and 8.16%, respectively. Using the temperature profiles, the measured and simulated SDAS were compared to confirm the thermal evolution of the deposits because SDAS is an important index to evaluate the deposits in the WAMM [10,22,23]. The SDAS of each layer of the deposit shown in Figure 7 was measured.…”

Section: Experimental Validation Using the Numerical Modelmentioning

confidence: 99%

“…The simulated SDAS was obtained using Equation (10) [24]: λ = 50 . (10) where λ is the SDAS in μm and GR is the cooling rate in K/s. Equation (10) indicates that the SDAS increases as the cooling rate decreases.…”

Section: Experimental Validation Using the Numerical Modelmentioning

confidence: 99%

“…where λ 2 is the SDAS in µm and GR is the cooling rate in K/s. Equation (10) indicates that the SDAS increases as the cooling rate decreases.…”

Section: Experimental Validation Using the Numerical Modelmentioning

confidence: 99%

“…In order to predict and control the mechanical properties, the thermal characteristics of the deposit need to be simulated for cost saving [9,10]. Few researchers are attempting to simulate the thermal characteristics of WAAM.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

CMT-Based Wire Arc Additive Manufacturing Using 316L Stainless Steel: Effect of Heat Accumulation on the Multi-Layer Deposits

Lee

2020

Metals

View full text Add to dashboard Cite

CMT welding sources are garnering attention as alternative heat sources for wire arc additive manufacturing because of their low-heat input. A comprehensive experimental and numerical study on the multi-layer deposition of STS316L was performed to investigate effect of heat accumulation during the deposition. The numerical model which is appropriate for WAMM was developed considering the characteristics of the CMT heat source for the first time. Using a high-speed camera, the transient behavior of the CMT arc was investigated, and applied to the heat source of the numerical model. The model was then used to analyze 10-layered deposits of STS316L, fabricated using CMT-based WAAM. During deposition, the temperature is measured using a pyrometer to analyze the microstructure, after which the cooling rate of each layer is estimated. The measured and simulated SDAS were compared. Based on the comparison, a guideline for the equation regarding the SDAS size and cooling rate was suggested.

show abstract

Section: Experimental Validation Using the Numerical Modelsupporting

confidence: 90%

Section: Experimental Validation Using the Numerical Modelmentioning

confidence: 99%

Section: Experimental Validation Using the Numerical Modelmentioning

confidence: 99%

“…where λ 2 is the SDAS in µm and GR is the cooling rate in K/s. Equation (10) indicates that the SDAS increases as the cooling rate decreases.…”

Section: Experimental Validation Using the Numerical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

CMT-Based Wire Arc Additive Manufacturing Using 316L Stainless Steel: Effect of Heat Accumulation on the Multi-Layer Deposits

Lee

2020

Metals

View full text Add to dashboard Cite

show abstract

Effect of Manufacturing Strategy on the Toughness Behavior of Inconel 625 Laser Metal Deposited Parts

et al. 2021

View full text Add to dashboard Cite

Nickel‐based superalloys are broadly used to produce high value added components in industrial sectors such as oil and gas, aerospace, energy production, etc. Additive manufacturing represents a viable alternative family of processes for near‐net shape fabrication. Herein, it presents results related to the toughness behavior of laser metal deposited Inconel 625 samples under impact tests, in the as‐deposited and post heat‐treated condition. Laser metal deposition is used to build Inconel 625 Charpy impact tests samples in two different orientations: vertical and horizontal. Half of the samples for each build orientation are subjected to annealing heat treatment whereas the remainder are kept as‐built. Distinct toughness behaviors are observed, with the vertical builds exhibiting a higher absorbed energy than the horizontal one. Furthermore, a decrease in absorbed energy after heat‐treatment is observed in the Charpy impact test results for both deposition orientation samples. A similar behavior is observed through Vickers microhardness measurements. However, in this case, although the horizontal deposited samples result always harder than the vertical ones, the heat treatment reduces the hardness difference between the two deposition directions. The obtained results highlight the influence of the manufacturing strategy on the toughness of the final components.

show abstract

A review on in situ monitoring technology for directed energy deposition of metals

Tang

Liu

Wang

et al. 2020

Int J Adv Manuf Technol

135

View full text Add to dashboard Cite

Rapid prediction of real-time thermal characteristics, solidification parameters and microstructure in laser directed energy deposition (powder-fed additive manufacturing)

Cited by 74 publications

References 60 publications

CMT-Based Wire Arc Additive Manufacturing Using 316L Stainless Steel: Effect of Heat Accumulation on the Multi-Layer Deposits

CMT-Based Wire Arc Additive Manufacturing Using 316L Stainless Steel: Effect of Heat Accumulation on the Multi-Layer Deposits

Effect of Manufacturing Strategy on the Toughness Behavior of Inconel 625 Laser Metal Deposited Parts

A review on in situ monitoring technology for directed energy deposition of metals

Contact Info

Product

Resources

About