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Microstructures and mechanical behavior of the bimetallic additively-manufactured structure(bams)of austenitic stainless steel and Inconel 625

引用

Journal of Materials Science & Technology 2021年第15期74卷 176-188页

作者： Md.R.U.Ahsan Xuesong Fan Gi-Jeong Seo Changwook Ji Mark Noakes Andrzej Nycz Peter KLiaw Duck Bong Kim Department of Mechanical Engineering Tennessee Technological UniversityCookevilleTN38505United States Department of Materials Science and Engineering The University of TennesseeKnoxvilleTN37996United States Department of Manufacturing and Engineering Technology Tennessee Technological UniversityCookevilleTN38505United States Advanced Forming Process R&D Group Korea Institute of Industrial TechnologyUlsan 44413South Korea Oak Ridge National Laboratory Oak RidgeTN37830United States

Bimetallic additively manufactured structures(bamss)can replace traditionally-fabricated functionallygraded-components through fusion welding processes and can eliminate locally-deteriorated mechanical properties arising from *** present work fabricates a bams by sequentially depositing the austenitic stainless-steel and Inconel625 using a gas-metal-arc-welding(GMAW)-based wire+arc additive manufacturing(WAAM)*** mapping shows a smooth compositional transition at the interface without any *** materials being the face-center-cubic(FCC)austenite,the electron backscattered diffraction(EBSD)analysis of the interface shows the smooth and cross-interfacecrystallographic growth of long-elongated grains in the*** hardness values were within the range of 220-240 HV for both materials without a large deviation at the *** to the controlled thermal history,mechanical testing yielded a consistent result with the ultimate tensile strength and elongation of 600 MPa and 40%,respectively,with the failure location on the stainless-steel *** study demonstrates that WAAM has the potential to fabricate bams with controlled properties.

关键词： WAAM Additive manufacturing bams Functionally-graded structures Microstructures Mechanical properties

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