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<p>The effects of equal channel dual-angle pressing (ECDAP) Bc path on the microstructure and mechanical properties of Zr-Sn-Nb-Fe alloy were investigated from one to four passes after ECDAP deformation. After the deformation of ECDAP, the microstructure of the sample transformed from Weinertite to the mixed structure of lamellar α and equiaxed α. With deformation passes increased, the average lamellar width of α decreased from 2.76 to 1.46&#xa0;μm after four passes. The microhardness of the sample increased from 169 to 220.7 HV which increases of 30.59% after four passes. Besides, the tensile strength of the sample also increased from 555.97&#xa0;MPa to 721&#xa0;MPa that increase of 29.68% after deformation. However, the total elongation of the sample decreased significantly after ECDAP deformation, with the elongation rates after one to four passes being 14.6%, 16.1%, 18.1%, and 17.9% that compared to the initial elongation is 22.1%.</p>

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Effects of Equal Channel Double Angular Pressing on the Microstructure and Mechanical Properties of Zr-Sn-Nb-Fe Alloy

  • 期刊论文

  • 发表日期：

    2026年6月3日

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  • Ping Li,
  • Jianfeng Shi,
  • Yashan Guo,
  • Haixiang Wang,
  • Kemin Xue

摘要

The effects of equal channel dual-angle pressing (ECDAP) Bc path on the microstructure and mechanical properties of Zr-Sn-Nb-Fe alloy were investigated from one to four passes after ECDAP deformation. After the deformation of ECDAP, the microstructure of the sample transformed from Weinertite to the mixed structure of lamellar α and equiaxed α. With deformation passes increased, the average lamellar width of α decreased from 2.76 to 1.46 μm after four passes. The microhardness of the sample increased from 169 to 220.7 HV which increases of 30.59% after four passes. Besides, the tensile strength of the sample also increased from 555.97 MPa to 721 MPa that increase of 29.68% after deformation. However, the total elongation of the sample decreased significantly after ECDAP deformation, with the elongation rates after one to four passes being 14.6%, 16.1%, 18.1%, and 17.9% that compared to the initial elongation is 22.1%.