Scholarlink

<p>A metal inert gas welding-based wire arc additive manufacturing process with coaxial powder feeding was used to fabricate 316L/WC composite thin-walled structures. Adjusting the powder feeding rate (0-0.3 r/min) altered the WC content in the composite, refining the grain size from 127.6 to 112.0&#xa0;μm and reducing texture intensity along the Z-direction from 6.97 to 2.60. Mechanical properties improved, with tensile strength increasing from 552.73 to 738.95&#xa0;MPa and hardness from 216.78 to 265.43&#xa0;HV. Microstructural analysis (SEM, TEM) identified dispersion strengthening, grain refinement, and carbide precipitation ((Fe, W)<sub>6</sub>C, Fe<sub>3</sub> W<sub>3</sub>C, Cr<sub>23</sub>C<sub>6</sub>) as key strengthening mechanisms. Corrosion resistance exhibited a nonlinear trend: WC agglomeration and interfacial microgalvanic effects reduced corrosion performance, while uniform particle distribution and improved metallurgical bonding enhanced passive film stability.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Arc Additive Manufacturing and Performance Regulation of 316L-WC Composites Based on MIG Process

  • 期刊论文

  • 发表日期：

    2025年10月28日

查看全文
  • Jiahao Meng,
  • Jiwen Li,
  • Shihao Ran,
  • Wei Liu,
  • Chong Chen

摘要

A metal inert gas welding-based wire arc additive manufacturing process with coaxial powder feeding was used to fabricate 316L/WC composite thin-walled structures. Adjusting the powder feeding rate (0-0.3 r/min) altered the WC content in the composite, refining the grain size from 127.6 to 112.0 μm and reducing texture intensity along the Z-direction from 6.97 to 2.60. Mechanical properties improved, with tensile strength increasing from 552.73 to 738.95 MPa and hardness from 216.78 to 265.43 HV. Microstructural analysis (SEM, TEM) identified dispersion strengthening, grain refinement, and carbide precipitation ((Fe, W)6C, Fe3 W3C, Cr23C6) as key strengthening mechanisms. Corrosion resistance exhibited a nonlinear trend: WC agglomeration and interfacial microgalvanic effects reduced corrosion performance, while uniform particle distribution and improved metallurgical bonding enhanced passive film stability.