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<p>In order to explore the microstructure and mechanical properties of CX stainless steel formed by selective laser melting, the chemical composition, microstructure and properties of the samples were analyzed by optical microscope, X-ray diffractometer, scanning electron microscope and backscattered electron diffraction technology. The results show that the temperature gradient and high cooling rate have an important influence on the microstructure and anisotropy of SLM formed CX stainless steel. CX stainless steel is mainly composed of a large amount of martensite structure and a small amount of austenite phase struct-ure, and the three-dimensional microstructure is obviously different. In the three-dimensional section, the texture of &lt; 110 &gt; crystal orientation in XOZ plane is the strongest, followed by YOZ, and the specific orientation of grains in XOY plane is the weakest. In comparison, the XOZ plane has the best mechanical properties, and its tensile strength, yield strength, elongation and microh-ardness reach 1045.29&#xa0;MPa, 829.51&#xa0;MPa, 16.70% and 364.89 HV, respectively.</p> Graphical Abstract <p></p>

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Three-Dimensional Microstructure and Mechanical Properties of CX Stainless Steel Formed by Selective Laser Melting

  • 期刊论文

  • 发表日期：

    2025年1月16日

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  • Yang Man,
  • Jian Haigen,
  • Fang Wu,
  • Liu Yi

摘要

In order to explore the microstructure and mechanical properties of CX stainless steel formed by selective laser melting, the chemical composition, microstructure and properties of the samples were analyzed by optical microscope, X-ray diffractometer, scanning electron microscope and backscattered electron diffraction technology. The results show that the temperature gradient and high cooling rate have an important influence on the microstructure and anisotropy of SLM formed CX stainless steel. CX stainless steel is mainly composed of a large amount of martensite structure and a small amount of austenite phase struct-ure, and the three-dimensional microstructure is obviously different. In the three-dimensional section, the texture of < 110 > crystal orientation in XOZ plane is the strongest, followed by YOZ, and the specific orientation of grains in XOY plane is the weakest. In comparison, the XOZ plane has the best mechanical properties, and its tensile strength, yield strength, elongation and microh-ardness reach 1045.29 MPa, 829.51 MPa, 16.70% and 364.89 HV, respectively.

Graphical Abstract