Evolution of near homogenous mechanical and microstructural properties in wire-arc based directed energy deposition of low carbon steel following trochoidal trajectory toolpath

Article Automation & Control Systems

The effect of WAAM process parameters on process conditions and production metrics in the fabrication of single-pass multi-layer wall artifacts

Austen Thien et al.

Summary: This study investigates the impact of varying dwell time and input deposition power on wire arc additive manufacturing, concluding that lower input power and dwell time can significantly reduce production time.

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY (2022)

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Article Engineering, Industrial

Interfacial characteristics of P91 steel-Inconel 740H bimetallic structure fabricated using wire-arc additive manufacturing

Soumya Sridar et al.

Summary: In this study, bimetallic structures of Inconel 740H superalloy and P91 steel were processed using wire-arc additive manufacturing (WAAM), resulting in the observation of a large gradient zone and intergranular cracks. Through non-equilibrium solidification simulations, it was determined that the reasons for crack formation in the gradient zone were the sudden change in the volumetric coefficient of thermal expansion and the development of local strains from the thermal residual stresses. Integration of experiments and simulation provided valuable insights into the processability of dissimilar alloy manufacturing using the WAAM technique.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2022)

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Article Materials Science, Multidisciplinary

Corrosion Effects on Fracture Toughness Properties of Wire Arc Additively Manufactured Low Carbon Steel Specimens

Anna Ermakova et al.

Summary: The emerging wire + arc additive-manufacturing (WAAM) technique has the potential to improve material design, manufacturing cost and efficiency, and reduce the levelised cost of energy. This study focuses on understanding the fracture-toughness behavior and sensitivity to corrosive environments of WAAM-built components for offshore wind structures. Fracture-toughness tests were performed on samples exposed to seawater, and the results were compared with tests in air. The findings contribute to the understanding of design requirements for WAAM-built structures in offshore applications.

METALS (2022)

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Article Engineering, Multidisciplinary

Influence of the interpass temperature on the microstructure and mechanical properties of the weld metal (AWS A5.18 ER70S-6) of a narrow gap welded API 5L X70 pipe joint

Paulo Henrique Grossi Dornelas et al.

Summary: This study investigates the effects of high interpass temperatures on the weld metal of a narrow groove high-strength low-alloy steel pipe. It is found that while high IT reduces welding idle time and increases productivity, it also leads to a decrease in weld metal impact energy, affecting the quality of the weld.

INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING (2022)

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Article Materials Science, Multidisciplinary

Corrosion characterization of new low manganese microalloyed X65 steels in sour and NON-SOUR synthetic seawater

Juan David Santos Martinez et al.

Summary: This study compares the corrosion resistance of three API 5L X65 microalloyed steels designed for severe sour service applications. The results show that the corrosion resistance of the steels can be ranked by microstructural characterization, and the sour medium exhibits higher aggressiveness in corroding the steels.

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T (2022)

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Article Nanoscience & Nanotechnology

In-depth understanding of the relationship between dislocation substructure and tensile properties in a low-carbon microalloyed steel

Liyang Zhao et al.

Summary: This study investigates the correlation between Mn content, dislocation substructure, and tensile properties in low carbon microalloyed steel. The results demonstrate that the complexity and distribution of the dislocation substructure play a crucial role in the tensile properties. Increasing Mn content alters the dislocation substructure, leading to an increase in tensile strength but a decrease in elongation.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2022)

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Article Nanoscience & Nanotechnology

Hardening mechanisms in a high wall thickness sour service pipe steel API 5L X65 before and after post-welding heat treatments

E. Morales et al.

Summary: The strength of the pipe region opposite to the weld in a high wall thickness sour service pipeline steel API 5L X65, manufactured by the SAW UOE process, has been studied in detail. The contributions of different strengthening mechanisms vary at different length scales in this pipe portion before and after heat treatment.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2022)

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Article Engineering, Industrial

Microstructure homogeneity and strength-toughness balance in submerged arc additive manufactured Mn-Ni-Mo high-strength steel by unique intrinsic heat treatment

Yuhang Li et al.

Summary: This study demonstrates the effectiveness of a novel submerged arc additive manufacturing method in homogenizing microstructure and fabricating large-scale components with excellent mechanical properties and strength-toughness balance. This method shows tremendous promise in the manufacturing of heavyweight yet homogeneous components.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2022)

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Article Engineering, Industrial

Microstructure and properties research of Al-Zn-Mg-Cu alloy with high strength and high elongation fabricated by wire arc additive manufacturing

Xuelei Ren et al.

Summary: In this study, high-strength and ductile Al-Zn-Mg-Cu alloys were successfully prepared using wire arc additive manufacturing technology. The effect of composite processing on the microstructure and mechanical properties of the alloy deposition was investigated. The results showed that the composite processing transformed the grain morphology and promoted the precipitation of nano-precipitated phases, resulting in increased tensile strength, elongation, and hardness. The research also revealed that fine grain strengthening and precipitation strengthening were the main mechanisms for enhancing elongation and strength, respectively. This study provides theoretical guidance for improving the strength and elongation of Wire Arc Additive Manufacturing Al-Zn-Mg-Cu alloys, thus promoting engineering applications.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2022)

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Article Engineering, Manufacturing

Effect of spiral scan strategy on microstructure for additively manufactured stainless steel 17-4

H. Yeung et al.

Summary: The study compared the effects of spiral and raster scan strategies on microstructure in laser powder bed fusion additive manufacturing. It was found that the spiral scan strategy resulted in a larger meltpool area, leading to equiaxed grain structure in the parts and 54% higher hardness compared to the raster scan strategy.

MANUFACTURING LETTERS (2021)

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Article Materials Science, Multidisciplinary

Comparison of the Weldability of AA6061-T6 Joint under Different Friction Stir Welding Conditions

Amin Abdollahzadeh et al.

Summary: This work compared similar butt joints of AA6061-T6 alloy prepared by underwater friction stir welding (UWFSW) and friction stir vibration welding (FSVW) processes with conventional friction stir welding (CFSW). The study analyzed the different microstructural modifications and their effects on strength, ductility, weldability, and hardness of the joints in different processes. Mechanical vibration and water significantly influenced grain size, coalescence of precipitates, and joint temperature, leading to improved mechanical properties in FSVW and UWFSW joints compared to CFSW joints. The combination of refined grains and hindrance of precipitate dissolution in UWFSW and FSVW joints resulted in higher hardness and a balance of strength and ductility.

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2021)

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Article Materials Science, Multidisciplinary

Microstructure and mechanical characteristics of AA6061-T6 joints produced by friction stir welding, friction stir vibration welding and tungsten inert gas welding: A comparative study

Behrouz Bagheri et al.

Summary: The study compared the microstructure and mechanical characteristics of AA6061-T6 joints produced by FSW, FSVW, and TIG. FSVW showed superior mechanical properties with finer grains in the weld region compared to FSW and TIG. The weld efficiency of FSVW was also higher than that of FSW and TIG.

INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS (2021)

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Article Materials Science, Multidisciplinary

The Forming Profile Model for Cold Metal Transfer and Plasma Wire-Arc Deposition of Nickel-Based Alloy

Wenhao Zhang et al.

Summary: The study compared the effect of process parameters on the forming profile of nickel-based alloy deposited by plasma and cold metal transfer (CMT) wire-arc deposition. The ellipse function model showed higher similarity with the profile features of PAW and CMT deposition. In the experiments, incomplete fusion defect was observed at the weld toe with CMT deposition in SLMB, while both sides of the PAW deposition layer were smoother in SBML compared to CMT.

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2021)

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Article Chemistry, Physical

Effect of Phase Transformations on Scanning Strategy in WAAM Fabrication

Muhammad Hassaan Ali et al.

Summary: The study aimed to clarify the effects of different deposition patterns on phase transformations, residual stresses, and distortions, finding differences in residual stresses between continuous and discontinuous patterns, and recommending a preference for discontinuous line scanning patterns in the fabrication of WAAM parts.

MATERIALS (2021)

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Article Materials Science, Multidisciplinary

Comparison of Properties and Bead Geometry in MIG and CMT Single Layer Samples for WAAM Applications

Harley Stinson et al.

Summary: Wire Arc Additive Manufacturing (WAAM) utilizes arc welding technology to fabricate metallic components. Gas Metal Arc Welding (GMAW) processes are commonly favored for their high deposition rates. This study investigates single-layer deposition and observes responses in mechanical properties and deposition rate by varying process parameters and mode.

METALS (2021)

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Article Metallurgy & Metallurgical Engineering

Simulation and experimental study of dynamic recrystallization process during friction stir vibration welding of magnesium alloys

Mahmoud Abbasi et al.

Summary: A two-dimensional cellular automaton (CA) model was used to analyze the microstructure evolution of AZ91 alloy during friction stir welding (FSW) under mechanical vibration. It was found that the dislocation density in friction stir vibration welding (FSVW) is higher than in FSW, and that nucleation and grain growth occur faster in FSVW compared to FSW. Vibration was shown to initiate nucleation earlier and decrease the proportion of the incubation period and the percentage of recrystallization as vibration frequency increased during FSVW.

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA (2021)

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Article Engineering, Industrial

Hybrid manufacturing of components from Ti-6Al-4V by metal forming and wire-arc additive manufacturing

M. Bambach et al.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2020)

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Article Engineering, Manufacturing

New method to enhance the mechanical characteristics of Al-5052 alloy weldment produced by tungsten inert gas

Mahmoud Abbasi et al.

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE (2020)

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Article Computer Science, Interdisciplinary Applications

Investigation of humping phenomenon for the multi-directional robotic wire and arc additive manufacturing

Lei Yuan et al.

ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING (2020)

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Article Engineering, Mechanical

Effect of bainitic transformation on the microstructure and wear resistance of pearlitic rail steel

Gustavo Tressia et al.

INDUSTRIAL LUBRICATION AND TRIBOLOGY (2020)

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Article Engineering, Industrial

Investigation of novel trochoidal toolpath strategies for productive and efficient directed energy deposition processes

Masakazu Soshi et al.

CIRP ANNALS-MANUFACTURING TECHNOLOGY (2019)

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Article Chemistry, Multidisciplinary

Correlation of Microstructure and Mechanical Properties of Metal Big Area Additive Manufacturing

Benjamin Shassere et al.

APPLIED SCIENCES-BASEL (2019)

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Article Automation & Control Systems

Heat treatment effects on Inconel 625 components fabricated by wire plus arc additive manufacturing (WAAM)-part 1: microstructural characterization

A. N. M. Tanvir et al.

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY (2019)

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Article Materials Science, Multidisciplinary

Effect of Solidification Defects and HAZ Softening on the Anisotropic Mechanical Properties of a Wire Arc Additive-Manufactured Low-Carbon Low-Alloy Steel Part

Mahya Ghaffari et al.

JOM (2019)

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Article Materials Science, Multidisciplinary

Environmental Behavior of Low Carbon Steel Produced by a Wire Arc Additive Manufacturing Process

Tomer Ron et al.

METALS (2019)

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Article Automation & Control Systems

Microstructural evolution and mechanical properties of a low-carbon low-alloy steel produced by wire arc additive manufacturing

Mehran Rafieazad et al.

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY (2019)

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Article Automation & Control Systems

High-accuracy and high-performance WAAM propeller manufacture by cylindrical surface slicing method

Tianying He et al.

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY (2019)

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Article Nanoscience & Nanotechnology

On the toughness scatter in low alloy C-Mn steel samples fabricated using wire arc additive manufacturing

Niyanth Sridharan et al.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2018)

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Article Engineering, Industrial

Benefits from H2 and CO2 additions in argon gas mixtures in GMAW

Lincon Luiz Schafranski et al.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2017)

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Article Engineering, Industrial

Adaptive trochoidal toolpath for complex pockets machining

Qing-Hui Wang et al.

INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH (2016)

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Article Automation & Control Systems

Forming appearance analysis in multi-layer single-pass GMAW-based additive manufacturing

Jun Xiong et al.

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY (2015)

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Article Nanoscience & Nanotechnology

Thermomechanical processing of low carbon Nb-Ti stabilized microalloyed steel: Microstructure and mechanical properties

Sumit Ghosh et al.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2015)

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Article Automation & Control Systems

A tool-path generation strategy for wire and arc additive manufacturing

Donghong Ding et al.

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY (2014)

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Article Computer Science, Software Engineering

Weld bead modeling and process optimization in Hybrid Layered Manufacturing

S. Suryakumar et al.

COMPUTER-AIDED DESIGN (2011)

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Article Nanoscience & Nanotechnology

Influence of boron on strain hardening behaviour and ductility of low carbon hot rolled steel

Anjana Deva et al.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2011)

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Article Materials Science, Multidisciplinary

Weather resistance of low carbon high performance bridge steel

Jia Guo et al.

MATERIALS & DESIGN (2009)

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Article Engineering, Manufacturing

Trochoidal milling

M. Otkur et al.

INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE (2007)

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Article Materials Science, Multidisciplinary

Effect of carbon content on mechanical properties of fully pearlitic steels

CM Bae et al.

MATERIALS SCIENCE AND TECHNOLOGY (2002)

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Evolution of near homogenous mechanical and microstructural properties in wire-arc based directed energy deposition of low carbon steel following trochoidal trajectory toolpath

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