Effect of Texture and Microstructure on Tensile Behaviors in the Polycrystalline Pure Niobium

Shanshan Zhang; Yuancai Liu; Tiewei Xu; Mingxue Sun; Qi Zhang; Yong Wan

doi:10.1007/s12540-020-00925-0

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자료유형: 학술저널

저자정보: Shanshan Zhang (Qingdao University of Technology) Yuancai Liu (Qingdao University of Technology) Tiewei Xu (Qingdao University of Technology) Mingxue Sun (Qingdao University of Technology) Qi Zhang (Qingdao University of Technology) Yong Wan (Qingdao University of Technology)

저널정보: 대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.27 No.10

발행연도: 2021.10

수록면: 4,023 - 4,034 (12page)

DOI: 10.1007/s12540-020-00925-0

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Pure polycrystalline niobium had different texture and microstructure due to the RCD-60, RCD-84 and CD-84 fabricationprocesses and recrystallization at 1000 °C for 2 h. The tensile behaviors and texture evolutions of the niobium were investigatedto reveal the correlation of initial texture/microstructure and tensile properties. The crucial differences of microstructureand orientations after recrystallization would influence tensile properties of the niobium. The differences of tensile behaviorsduring tension testing correspond to the different microstructure and texture evolution in the niobium. The enhanced ?110? //RD texture during the tensile deformation indicates that orientations of sub-structures are arranging along the tensile axis inthe RCD-60 niobium. The RCD-84 and CD-84 niobium present the other phenomenon, that sub-structures near the fractureoccur a significant rotation and the ?110? // RD texture has been slightly changed after tensile failure. The recrystallizedniobium fabricated by the RCD-84 obtains excellent tensile properties with ultimate tensile strength of 364 MPa and elongationof 55%. The strain hardening rate of the CD-84 niobium is the highest during the initial stage of tensile deformation,and becomes lower than that of the RCD-84 niobium after the 16% strain. Furthermore, the analysis of Taylor factors isapplied to reveal the difference of hardening rates during tensile deformation due to different fabrication and recrystallizationprocesses of the polycrystalline niobium.

#Texture #EBSD #Mechanical performance #BCC metal #Taylor factor

참고문헌 (32)

참고문헌 신청

최국선 / 2009 / Purification of Niobium by Multiple Electron Beam Melting for Superconducting RF Cavities / Metals and Materials International 15(3):385~390

L. Chen / 2008 / Chin. Phys. C 32:1003~1006

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A. Zamiri / 2007 / Int. J. Solids Struct 44:8627~8647

E. Shafiei / 2019 / Effect of Microstructure and Texture Evolution During Variable Gauge Rolling on Mechanical Properties of Tailor Rolled Blanks / Metals and Materials International 25(5):1378~1387

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