Wire and Arc Additive Manufacturing of High-Strength Low-Alloy Steel: Microstructure and Mechanical Properties

被引：36
作者：
Duarte, Valdemar R. [1 ,2 ]
Rodrigues, Tiago A. [1 ]
Schell, Norbert [3 ]
Santos, Telmo G. [1 ]
Oliveira, Joao P. [1 ]
Miranda, Rosa M. [1 ]
机构：
[1] NOVA Univ Lisbon, Dept Mech & Ind Engn, NOVA Sch Sci & Technol, UNIDEMI, P-2829516 Caparica, Portugal
[2] Univ Nova Lisboa, Fac Ciencias & Tecnol, Dept Engn Mecan & Ind, P-2829516 Caparica, Portugal
[3] Helmholtz Zentrum Geesthacht, Inst Mat Res, Max Planck Str 1, D-21502 Geesthacht, Germany
来源：
ADVANCED ENGINEERING MATERIALS | 2021年 / 23卷 / 11期
关键词：
high-strength low-alloy steel; mechanical properties; synchrotron X-ray diffraction; wire and arc additive manufacturing;
D O I：
10.1002/adem.202001036
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Wire and arc additive manufacturing of high-strength low-alloy steel is performed. The microstructures and mechanical properties of the samples are investigated and correlated with the process heat input. Continuous and pulsed wave welding modes are studied and added material efficiencies are determined. The microstructural characterization and microhardness test reveal that the heat input effect is more impactful when parts are produced with pulsed wave mode. Microstrain evolution and phase fraction are evaluated via synchrotron X-ray diffraction. A higher percentage of austenite in the samples built with higher heat input is determined. Uniaxial tensile testing results show that it is possible to improve ductility and mechanical strength by varying the process parameters.
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页数：9
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