Divorced eutectic TiC (TiC_E) influences the mechanical properties of TiC‐reinforced wear‐resistant steels. However, there is a lack of information with respect to the heterogeneous nucleation, growth, and formation mechanism of divorced TiC_E. To this end, the morphology, orientation, and origin of the divorced TiC_E in TiC‐reinforced wear‐resistant steel are thoroughly examined. Combined with the calculated planar disregistry between primary TiC (TiC_P) and divorced TiC_E and their actual orientation relationship examined using the electron backscatter diffraction (EBSD) technique, it is indicated that TiC_P serves as the preferred heterogeneous site for divorced TiC_E during solidification. The precipitation mechanism for the divorced TiC_E on the TiC_P is put forward and accounts for why the direction of [100] is the preferential growth direction.

中文翻译：

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原位TiC增强钢基体：离晶共晶TiC的异质成核和形成机理

离晶共晶TiC（TiC _E）影响TiC增强耐磨钢的机械性能。然而，关于离异的TiC _E的异质成核，生长和形成机理，缺乏信息。为此，对TiC增强耐磨钢中离婚的TiC _E的形态，取向和起源进行了彻底检查。结合计算出的初级TiC（TiC _P）和离婚TiC _E之间的平面错位以及使用电子背散射衍射（EBSD）技术检查的实际取向关系，表明TiC _P是离异TiC _E的首选异质位点在凝固过程中。提出了离析的TiC _E在TiC _P上的沉淀机理，并解释了为什么[100]的方向是优先生长的方向。