电弧增材制造舰船用高强钢10CrNi<sub>3</sub>MoV的组织及性能

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Abstract The 10CrNi₃MoV sample of high strength steel for naval ship was prepared by wire and arc additive manufacturing technology. The phase composition, microstructure,crystal structure and mechanical properties of 10CrNi₃MoV samples were analyzed. Through the study on the microstructure and performance of 10CrNi₃MoV high-strength steel wire and arc additive manufacturing sample, it was found that the 10CrNi₃MoV high-strength steel sample prepared by wire and arc additive manufacturing technology had good forming quality, no major defects, and good internal metallurgical bonding of the sample. The metallographic structure was mainly acicular ferrite, massive ferrite and granular bainite. The microhardness of the sample section was evenly distributed, and the average microhardness was about 217HV_0.2. Mechanical properties of the specimen is excellent, horizontal average yield strength is 498 MPa, the average tensile strength is 676 MPa, the average elongation is 25.5%, and -40 ℃ Charpy impact value is 127 J, longitudinal average yield strength is 459 MPa, the average tensile strength is 648 MPa, elongation is 23.5% on average and -40 ℃ Charpy impact value is 109 J.

Key words： naval ship 10CrNi₃MoV high strength steel additive manufacturing microstructure properties

Published: 25 November 2019

CLC number:

TG146

Fund:This work was financially supported by Anhui Provincial Natural Science Foundation (1908085QE174) and the Talent Program of Anhui Science and Techno-logy University (100005).

About author:: Chun Guo received his M.E. degree and Ph.D. degree from the University of Chinese Academy of Sciences (Lanzhou Institute of Chemical Physics, Chinese Aca-demy of Sciences). He acquired the award of “Excellent Graduates” of University of Chinese Academy of Sciences. From July 2012 to May 2017, engineer and senior engineer of Luoyang Ship Material Research Institute. From May 2017 to May 2018, “Associate Research Fellow of Special Talent Program” of Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences. He joined Anhui Science and Technology University in 2018. His research interests are additive manufacturing, welding, surface engineering technology. He has published more than 50 journal papers, applied more than 20 national invention patents. He has presided over and participated in more than 20 scientific research projects in the “13th Five-Year Plan”, including equipment pre-research projects, military products supporting projects, high-tech ship scientific research projects of the Ministry of Industry and Information Technology,
the National Natural Science Foundation of China, the specially appointed personnel Program projects and major scientific and technological projects at the municipal level. In addition, he acquired one third prize for national defense technology invention and one second prize for provincial and ministerial science and technology progress.

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Cite this article:

GUO Chun,MA Mingliang,HU Ruizhang, et al. Microstructure and Properties of 10CrNi₃MoV High Strength Steel for NavalShip Made by Wire and Arc Additive Manufacturing[J]. Materials Reports, 2019, 33(Z2): 455-459.

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http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2019/V33/IZ2/455

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