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<p>This paper presents the results of a comprehensive study of samples of a serial Cu-Sn alloy after a single pass of asymmetric rolling (AR) with a true strain deformation of ~ 70%. During AR, an active transformation of the initial structure occurs at the macro- and microlevels, which leads to the formation of a grain–subgrain structure. At the macrolevel, a lamellar-type structure is formed in the rolling direction, and at the microlevel, a complex lamellar and cellular structure of the nanometre range with a minimum size of ~ 50&#xa0;nm is formed in macrobands. The yield strength increases from 200 to 805&#xa0;MPa, and wear resistance under dry friction conditions increases noticeably. The achieved properties in terms of yield strength after AR are twice as high as those of competing industrial methods of strengthening the Cu-Sn alloy.</p>

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Transformation of the Structure and Properties of Cu-11Sn Alloy Subjected to Asymmetric Rolling

  • 期刊论文

  • 发表日期：

    2025年10月3日

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  • G. I. Raab,
  • D. A. Aksenov,
  • A. M. Pesin,
  • A. G. Raab,
  • Yu Hailiang,
  • M. S. Smakovsky

摘要

This paper presents the results of a comprehensive study of samples of a serial Cu-Sn alloy after a single pass of asymmetric rolling (AR) with a true strain deformation of ~ 70%. During AR, an active transformation of the initial structure occurs at the macro- and microlevels, which leads to the formation of a grain–subgrain structure. At the macrolevel, a lamellar-type structure is formed in the rolling direction, and at the microlevel, a complex lamellar and cellular structure of the nanometre range with a minimum size of ~ 50 nm is formed in macrobands. The yield strength increases from 200 to 805 MPa, and wear resistance under dry friction conditions increases noticeably. The achieved properties in terms of yield strength after AR are twice as high as those of competing industrial methods of strengthening the Cu-Sn alloy.