Temperature-Dependent Thermal and Mechanical Properties of a Wire Arc Additively Manufactured Low Transformation Temperature Steel

Tang, Wenming; Fancher, Chris M.; Nandwana, Peeyush; An, Ke; Nycz, Andrzej; Wang, Hsin; Kannan, Rangasayee; Trofimov, Artem; Yu, Dunji; Leonard, Donovan N.; Meyer, Luke; Plotkowski, Alex

doi:10.1007/s11661-022-06933-6

Cited by 4 publications

(4 citation statements)

References 26 publications

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“…Overall, the microstructure across the high and low ends of the sample is similar, indicating a uniform microstructure that may be obtained via this fabrication method. The inverse pole figure maps along the height direction and the corresponding pole figures indicate a preferential texture along the height direction [20].…”

Section: Microstructure Of Directed Energy Deposition Mild Steelmentioning

confidence: 90%

“…Grain coarsening is observed in some areas, but no clear delineations are observed at this scale between weld layers. The typical electron backscatter diffraction (EBSD) and pole figures at the two end locations along the build height of a low-transformation temperature (LTT) steel (equivalent to low to medium carbon containing steels) is shown in Figure 2.3 [20]. BCC iron (martensite) was the majority phase observed in the specimen, with very small amounts of retained FCC iron (austenite).…”

Section: Microstructure Of Directed Energy Deposition Mild Steelmentioning

confidence: 99%

“…Tang et al conducted a careful study of the temperature-dependent structure-property relationship in LTT steels (with low to medium carbon additions) that were fabricated by WAAM [20]. In their study, as shown in Figure 2.7, room-temperature results (24°C) are included in both figures, and dotted lines at 240°C and 640°C highlight the strength changes at the martensite start temperature (Ms) and austenite start temperature (As), respectively.…”

Section: Mechanical Properties Of Directed Energy Deposition Mild Steelmentioning

confidence: 99%

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In-Situ Monitoring Assisted Large-Scale Additive Manufacturing of Mild Steel and 316L Alloys for Nuclear Application

Nag,

Paramanathan,

List III

et al. 2023

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Section: Microstructure Of Directed Energy Deposition Mild Steelmentioning

confidence: 90%

Section: Microstructure Of Directed Energy Deposition Mild Steelmentioning

confidence: 99%

Section: Mechanical Properties Of Directed Energy Deposition Mild Steelmentioning

confidence: 99%

See 1 more Smart Citation

In-Situ Monitoring Assisted Large-Scale Additive Manufacturing of Mild Steel and 316L Alloys for Nuclear Application

Nag,

Paramanathan,

List III

et al. 2023

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“…Planar walls were manufactured via WAAM using a custom system comprised of a Tormach ZA6 robotic arm and a Lincoln Electric R450 MIG welder. Two steel alloys, mild steel (MS), and a low-temperature transformation (LTT) steel [ 9 ], were used. The two alloys were selected to produce different residual stress distributions, as the austenite to martensite transformation in the LTT steel is known to modify the stress state due to the volume difference between the two phases [ 4 ].…”

Section: Methodsmentioning

confidence: 99%

Validating the Use of Gaussian Process Regression for Adaptive Mapping of Residual Stress Fields

et al. 2023

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Probing the stress state using a high density of measurement points is time intensive and presents a limitation for what is experimentally feasible. Alternatively, individual strain fields used for determining stresses can be reconstructed from a subset of points using a Gaussian process regression (GPR). Results presented in this paper evidence that determining stresses from reconstructed strain fields is a viable approach for reducing the number of measurements needed to fully sample a component’s stress state. The approach was demonstrated by reconstructing the stress fields in wire-arc additively manufactured walls fabricated using either a mild steel or low-temperature transition feedstock. Effects of errors in individual GP reconstructed strain maps and how these errors propagate to the final stress maps were assessed. Implications of the initial sampling approach and how localized strains affect convergence are explored to give guidance on how best to implement a dynamic sampling experiment.

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Interpass temperature strategies for compressive residual stresses in cladding low-transformation-temperature material 16Cr8Ni via wire arc additive manufacturing

Huang,

Ma,

Wang

et al. 2024

International Communications in Heat and Mass Transfer

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Temperature-Dependent Thermal and Mechanical Properties of a Wire Arc Additively Manufactured Low Transformation Temperature Steel

Cited by 4 publications

References 26 publications

In-Situ Monitoring Assisted Large-Scale Additive Manufacturing of Mild Steel and 316L Alloys for Nuclear Application

In-Situ Monitoring Assisted Large-Scale Additive Manufacturing of Mild Steel and 316L Alloys for Nuclear Application

Validating the Use of Gaussian Process Regression for Adaptive Mapping of Residual Stress Fields

Interpass temperature strategies for compressive residual stresses in cladding low-transformation-temperature material 16Cr8Ni via wire arc additive manufacturing

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