Multilayer Maraging/CoCrNi Composites With Synergistic Strengthening-Toughening Behavior

C. X. Chen; C. X. Chen; C. X. Chen; Y. F. Ge; Y. F. Ge; Y. F. Ge; W. Fang; W. Fang; W. Fang; X. Zhang; X. Zhang; X. Zhang; B. X. Liu; B. X. Liu; B. X. Liu; J. H. Feng; J. H. Feng; J. H. Feng; F. X. Yin; F. X. Yin; F. X. Yin

doi:10.3389/fmats.2020.619315

Frontiers in Materials (Feb 2021)

Multilayer Maraging/CoCrNi Composites With Synergistic Strengthening-Toughening Behavior

C. X. Chen,
C. X. Chen,
C. X. Chen,
Y. F. Ge,
Y. F. Ge,
Y. F. Ge,
W. Fang,
W. Fang,
W. Fang,
X. Zhang,
X. Zhang,
X. Zhang,
B. X. Liu,
B. X. Liu,
B. X. Liu,
J. H. Feng,
J. H. Feng,
J. H. Feng,
F. X. Yin,
F. X. Yin,
F. X. Yin

Affiliations

C. X. Chen: Research Institute for Energy Equipment Materials, Hebei University of Technology, TianJin, China
C. X. Chen: TianJin key laboratory of Materials laminating Fabrication and Interfacial Controlling Technology, Hebei University of Technology, TianJin, China
C. X. Chen: School of Materials Science and Engineering, Hebei University of Technology, TianJin, China
Y. F. Ge: Research Institute for Energy Equipment Materials, Hebei University of Technology, TianJin, China
Y. F. Ge: TianJin key laboratory of Materials laminating Fabrication and Interfacial Controlling Technology, Hebei University of Technology, TianJin, China
Y. F. Ge: School of Materials Science and Engineering, Hebei University of Technology, TianJin, China
W. Fang: Research Institute for Energy Equipment Materials, Hebei University of Technology, TianJin, China
W. Fang: TianJin key laboratory of Materials laminating Fabrication and Interfacial Controlling Technology, Hebei University of Technology, TianJin, China
W. Fang: School of Materials Science and Engineering, Hebei University of Technology, TianJin, China
X. Zhang: Research Institute for Energy Equipment Materials, Hebei University of Technology, TianJin, China
X. Zhang: TianJin key laboratory of Materials laminating Fabrication and Interfacial Controlling Technology, Hebei University of Technology, TianJin, China
X. Zhang: School of Materials Science and Engineering, Hebei University of Technology, TianJin, China
B. X. Liu: Research Institute for Energy Equipment Materials, Hebei University of Technology, TianJin, China
B. X. Liu: TianJin key laboratory of Materials laminating Fabrication and Interfacial Controlling Technology, Hebei University of Technology, TianJin, China
B. X. Liu: School of Materials Science and Engineering, Hebei University of Technology, TianJin, China
J. H. Feng: Research Institute for Energy Equipment Materials, Hebei University of Technology, TianJin, China
J. H. Feng: TianJin key laboratory of Materials laminating Fabrication and Interfacial Controlling Technology, Hebei University of Technology, TianJin, China
J. H. Feng: School of Materials Science and Engineering, Hebei University of Technology, TianJin, China
F. X. Yin: Research Institute for Energy Equipment Materials, Hebei University of Technology, TianJin, China
F. X. Yin: TianJin key laboratory of Materials laminating Fabrication and Interfacial Controlling Technology, Hebei University of Technology, TianJin, China
F. X. Yin: School of Materials Science and Engineering, Hebei University of Technology, TianJin, China

DOI: https://doi.org/10.3389/fmats.2020.619315
Journal volume & issue: Vol. 7

Abstract

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A novel multilayer maraging/CoCrNi composite with good mechanical properties was successfully fabricated by a vacuum hot-rolling and aging treatment. The yield strength, tensile strength, uniform elongation, and fracture elongation reached 1,151, 1,380 MPa, 15.7, and 24% respectively, realizing the aim of synergistic strengthening–toughening by effectively improving the yield strength of the CoCrNi alloy and strain-hardening capacity of the maraging steel. The vacuum state, high rolling reduction ratio, and alloy element diffusion are beneficial in strengthening the clad interface. The good work-hardening capacity of the CoCrNi alloy compensates for the poor strain-softening behavior of the maraging steel, effectively delaying the premature localized necking of the multilayer composites. The strengthening–toughening mechanism of the multilayer maraging/CoCrNi composites is mainly attributed to the strong interface, nanoscale precipitation, and strain-induced twinning.

Published in Frontiers in Materials

ISSN: 2296-8016 (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Technology
Website: https://www.frontiersin.org/journals/materials

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