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Effect of Deformation of Multi-pass Rolling on Microstructure and Properties of C71500 Cupronickel Alloy Tube
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1.Institute of Engineering Technology, University of Science and Technology Beijing, Beijing 100083, China;2.Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, China;3.State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an 710049, China;4.State Key Lab of Rolling and Automation, Northeastern University, Shenyang 110819, China;5.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;6.Wuxi Longda Metal Material Co., Ltd, Wuxi 214105, China

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Fund Project:

National Natural Science Foundation of China (51801149); Sponsored by Ministry of Industry and Information Technology of the People's Republic of China (TC170A2KN-8)

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    Abstract:

    Electron backscatter diffraction (EBSD) technique was used to analyze the microstructure of cold-rolled C71500 cupronickel alloy tube. Through the analysis of microhardness, tensile properties, microstructure, texture, and texture content of the cupronickel alloy tube after the second pass cold rolling with different deformations (3.19%, 9.57%, 19.37%, 23.97%, 31.78%), the texture change law of the alloy was obtained. The quantitative relationship between deformation and storage energy was revealed by analyzing the grain size and the change of texture and grain boundary, which could be directly reflected by the proportion of small angle grain boundaries. The optimal deformation of second pass rolling for C71500 alloy was obtained. Results show that the yield strength, tensile strength, and microhardness of cupronickel alloy are increased with increasing the working ratio, while the plasticity is decreased.

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[Gao Xin, Wu Huibin, Liu Ming, Zhang Yuanxiang, Gao Feng, Zhou Xiangdong, Wu Yinxing. Effect of Deformation of Multi-pass Rolling on Microstructure and Properties of C71500 Cupronickel Alloy Tube[J]. Rare Metal Materials and Engineering,2021,50(11):3819~3823.]
DOI:10.12442/j. issn.1002-185X.20200976

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History
  • Received:December 17,2020
  • Revised:January 14,2021
  • Adopted:February 04,2021
  • Online: November 25,2021
  • Published: November 24,2021