ABSTRACT Research aimed at enhancing the surface properties of carbon steels by incorporating fine silicon carbide particulates has had limited success because the dissolution of the ceramic occurred. This research considers a method of reducing SiC dissolution by generating a high Fe–Si liquid which protects the ceramic. Three particulate groups were investigated, (1) ∼ 5 µm SiC, (2) ∼45 µm Si +∼ 5 µm SiC, and (3) ∼45 µm Si, all incorporated into a microalloyed steel using a tungsten inert gas process. Detailed microhardness of the melt zones together with microstructural analysis showed that the addition of Si resulted in a cracked hard layer containing SiC. However, in Specimen 1, a thicker, hardcrack-free layer resulted from the microstructure developed by the dissolution of SiC.

中文翻译：

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预置硅在 TIG 处理的 SiC 微合金钢上的作用

摘要 旨在通过掺入细碳化硅颗粒来提高碳钢表面性能的研究取得了有限的成功，因为陶瓷发生了溶解。该研究考虑了一种通过生成保护陶瓷的高 Fe-Si 液体来减少 SiC 溶解的方法。研究了三个颗粒组，(1) ~ 5 µm SiC，(2) ~ 45 µm Si + ~ 5 µm SiC，和 (3) ~45 µm Si，它们都使用钨惰性气体工艺结合到微合金钢中。熔体区的详细显微硬度以及显微组织分析表明，Si 的添加导致含有 SiC 的裂纹硬层。然而，在试样 1 中，由于 SiC 溶解而形成的微观结构导致了较厚的无硬裂纹层。