Scholarlink

<p>High-speed Laser Cladding (HLC) technology was used to fabricate WC/316L composite coatings with varying WC contents on a 316&#xa0;L alloy substrate. The microstructure of the coatings, along with the dissolution and precipitation behavior of WC and the wear mechanism, were investigated. The results show that during the cladding process, the edges of WC dissolve to form a W-rich zone. Upon cooling, W atoms nucleate and precipitate carbides at the WC/316L interface, resulting in strong interfacial bonding between WC and the 316&#xa0;L substrate. The phases in the coating include austenite, WC, M<sub>2</sub>C, M<sub>7</sub>C<sub>3</sub>, and M<sub>3</sub>C<sub>2</sub>. As the WC content increases, the austenite content decreases. WC enhances the wear resistance of the coating by increasing hardness, dispersing the load on the matrix, and passivating wear debris. The wear rate of the 316&#xa0;L + 30WC coating is only 27% of that of the 316&#xa0;L alloy.</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

Investigation of the dissolution-precipitation behavior and properties of high-speed laser cladding WC/316L composite coatings

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年5月21日

查看全文
  • Pi Ziqiang,
  • Du Kaiping,
  • Chen Xing,
  • Zheng Zhaoran,
  • Wang Chen

摘要

High-speed Laser Cladding (HLC) technology was used to fabricate WC/316L composite coatings with varying WC contents on a 316 L alloy substrate. The microstructure of the coatings, along with the dissolution and precipitation behavior of WC and the wear mechanism, were investigated. The results show that during the cladding process, the edges of WC dissolve to form a W-rich zone. Upon cooling, W atoms nucleate and precipitate carbides at the WC/316L interface, resulting in strong interfacial bonding between WC and the 316 L substrate. The phases in the coating include austenite, WC, M2C, M7C3, and M3C2. As the WC content increases, the austenite content decreases. WC enhances the wear resistance of the coating by increasing hardness, dispersing the load on the matrix, and passivating wear debris. The wear rate of the 316 L + 30WC coating is only 27% of that of the 316 L alloy.