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<p>In this work, bimetallic samples based on steels 13Mn6 and SS321 are produced using wire-feed electron beam additive manufacturing (EBAM). Each material is deposited in 50 mm layers on top of each other, forming a&#xa0;sharp transition boundary without defects such as lack of fusion, discontinuities, or pores. The microstructure and mechanical properties of the bimetallic steel samples are studied. It is established that the bimetallic sample is characterized by a&#xa0;clear interface between the two materials, which has a&#xa0;macroscopically heterogeneous structure with two-phase transition zones on both sides of the boundary. As the bimetallic sample grows (moving away from the sharp transition boundary), an anisotropic grain structure begins to form under the conditions of non-stationary local metallurgy. The heterogeneous grain structure affects the macroscopic deformation behavior, likely due to the influence of the orientation and density of grain boundaries formed during the additive bimetallic material growth. The fracture occurs through the base metal, bypassing the junction zone between the different steel grades. The samples with the boundary strength not lower than that of the base metal are successfully manufactured.</p>

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Formation of bimetallic samples based on stainless and ferrite-pearlite steel using wire-feed electron beam additive technology

  • 期刊论文

  • 发表日期：

    2025年10月1日

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  • K. S. Osipovich,
  • D. A. Gurianov,
  • A. A. Belosludtseva,
  • N. N. Shamarin,
  • V. M. Semenchuk,
  • A. V. Chumaevskii,
  • E. A. Kolubaev

摘要

In this work, bimetallic samples based on steels 13Mn6 and SS321 are produced using wire-feed electron beam additive manufacturing (EBAM). Each material is deposited in 50 mm layers on top of each other, forming a sharp transition boundary without defects such as lack of fusion, discontinuities, or pores. The microstructure and mechanical properties of the bimetallic steel samples are studied. It is established that the bimetallic sample is characterized by a clear interface between the two materials, which has a macroscopically heterogeneous structure with two-phase transition zones on both sides of the boundary. As the bimetallic sample grows (moving away from the sharp transition boundary), an anisotropic grain structure begins to form under the conditions of non-stationary local metallurgy. The heterogeneous grain structure affects the macroscopic deformation behavior, likely due to the influence of the orientation and density of grain boundaries formed during the additive bimetallic material growth. The fracture occurs through the base metal, bypassing the junction zone between the different steel grades. The samples with the boundary strength not lower than that of the base metal are successfully manufactured.