This study is intended to remove delta ferrite from the microstructure through cyclic heat treatment to upgrade the hydro abrasive erosion resistance. The elimination of delta ferrite occurred through the dissolution of delta ferrite which started through the atomic diffusion of alloying elements from the grain boundaries. This decreased its content and the size with the number of cycles. The yield strength, tensile toughness, and hardness increased with delta ferrite up to 6.3% while the material removal by hydro abrasive erosion demonstrated just opposite trend. The treated specimen possessed 74% higher erosion resistance than the as-received due to its high hardness and tensile toughness. The electron and atomic force microscopy revealed a ductile mode of erosion in all specimens.

这项研究旨在通过循环热处理从微观结构中去除δ铁素体，以提高耐水磨蚀性。δ铁素体的消除是通过δ铁素体的溶解而发生的，该溶解是从合金元素从晶界的原子扩散开始的。随着循环次数的减少，它的内容和大小减小了。屈服强度，拉伸韧性和硬度随着δ铁素体的增加而增加至6.3％，而通过水磨蚀的去除显示出恰好相反的趋势。经处理的试样由于其高硬度和拉伸韧性而具有比预期的高74％的耐蚀性。电子和原子力显微镜检查显示所有标本都具有延性的腐蚀模式。