Parametric studies on laser additive manufacturing of copper on stainless steel

Yadav, Sunil; Paul, C. P.; K., A.; Jinoop, A. N.; Nayak, S. K.; Singh, Rashmi; Bindra, K. S.

doi:10.1177/25165984211047525

Cited by 5 publications

(1 citation statement)

References 18 publications

(27 reference statements)

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“…When the value of A was far from the central reference point, the width of the deposition layer gradually increased with the increase in welding current. The larger the welding current, the larger the size of the molten pool [17], which was more conducive to the lateral flow of the metal melt; so, the width of the deposition layer was increased. When the torch travel speed increased, the deposition layer width decreased gradually, because the higher the torch travel speed, the less metal was deposited per unit area [18].…”

Section: Resultsmentioning

confidence: 99%

Study on the Relationship between Process Parameters and theFormation of GTAW Additive Manufacturing of TC4 Titanium Alloy Using the Response Surface Method

Liu,

Feng,

Chen

et al. 2023

Coatings

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The geometric parameters of the deposited layer include the width, height, and penetration depth of the deposited layer. The welding current, wire feeding speed, and torch travel speed during the additive manufacturing process of TC4 titanium alloy have the greatest impact on the geometric parameters of the deposited layer. In order to study how the deposition layer width, deposition layer height, and penetration depth are affected by the welding current, wire feeding speed, and torch travel speed, this article uses Design Expert 8.0.6 software for Box−Behnken design response surface experiments. During the experimental design, the welding current, wire feeding speed, and torch travel speed are used as input variables. The deposition layer width, deposition layer height, and penetration depth are selected as the responses. We designed 17 response surface experiments that were conducted using GTAW-AM. The results show that as the welding current increases, the penetration depth and width of deposition layer gradually increase, and the deposition layer height gradually decreases. As the wire feeding speed increases, the deposition layer height and penetration depth gradually increase, and the wire feeding speed has a minimal effect on the deposition layer width. As the torch travel speed increases, the penetration depth, width and height of deposition layer gradually decrease. The response surface method experimental design can also optimize the matching of three process parameters: welding current, wire feeding speed, and torch travel speed, thereby obtaining the optimal matching range of process parameters. Within the optimized matching range of process parameters, a welding current of 90 A, a wire feeding speed of 900 mm/min, and a torch travel speed of 200.18 mm/min were selected to prepare TC4 titanium alloy thin-walled part. The microstructure of the top, middle and bottom are all basketweave structure. The α phase gradually becomes coarse from the top to the bottom. The microhardness of the top, middle, and bottom of the thin-walled parts is 362.7 HV, 352.7 HV, and 340.5 HV, respectively. The horizontal tensile strength is 926.1 MPa, with an elongation of 12.22%, and the vertical tensile strength is 938.1 MPa, with an elongation of 14.41%.

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Section: Resultsmentioning

confidence: 99%