In-situ strengthening of a high strength low alloy steel during Wire and Arc Additive Manufacturing (WAAM)

被引：137

作者：

Rodrigues, Tiago A. ^{[1
]}

Duarte, V. R. ^{[1
]}

Tomas, D. ^{[1
]}

Avila, Julian A. ^{[2
]}

Escobar, J. D. ^{[3
]}

Rossinyol, Emma ^{[4
]}

Schell, N. ^{[5
]}

Santos, Telmo G. ^{[1
]}

Oliveira, J. P. ^{[1
,6
]}

机构：

[1] Univ Nova Lisboa, UNIDEMI, Dept Mech & Ind Engn, NOVA Sch Sci & Technol, P-2829516 Caparica, Portugal

[2] Sao Paulo State Univ UNESP, Campus Sao Joao da Boa Vista, BR-13876750 Sao Joao Da Boa Vista, SP, Brazil

[3] Univ Sao Paulo, Met & Mat Engn Dept, Ave Prof Mello Moraes 2463, BR-05508030 Sao Paulo, SP, Brazil

[4] Univ Autonoma Barcelona, Serv Microscopia, E-08193 Bellaterra, Spain

[5] Helmholtz Zentrum Geesthacht, Inst Mat Res, Max Planck Str 1, D-21502 Geesthacht, Germany

[6] Univ Nova Lisboa, Dept Mat Sci, NOVA Sch Sci & Technol, CENIMAT I3N, P-2829516 Caparica, Portugal

来源：

ADDITIVE MANUFACTURING | 2020年 / 34卷

基金：

巴西圣保罗研究基金会; 欧盟地平线“2020”;

关键词：

Wire and Arc Additive Manufacturing; HSLA steel; SiC; Inoculants; Synchrotron X-ray diffraction; Mechanical testing; AFFECTED ZONE MICROSTRUCTURES; MECHANICAL-PROPERTIES; SILICON; PRECIPITATION; MARTENSITE; AUSTENITE; TOUGHNESS; CEMENTITE; BEHAVIOR;

D O I：

10.1016/j.addma.2020.101200

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, SiC particles were added to the molten pool during WAAM of a high strength low alloy steel. The introduction of these high melting point particles promoted grain refinement, and the precipitation of Fe3C due to SiC dissociation. The microstructural evolution was studied by optical and electron microscopy techniques and high energy synchrotron X-ray diffraction. Additionally, mechanical testing and hardness profiles were obtained for the SiC-containing and SiC-free parts. An improvement in the mechanical strength of the SiC-added WAAM parts was observed, which was attributed to the refined grain structure and finely dispersed Fe3C.

引用

页数：10

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