free ferrite

英 [friː ˈferaɪt]

美 [friː ˈferaɪt]

游离（亚共析）铁素体

It was pointed out that obtaining fine sorbite with high toughness was the key to good fatigue resistance. Other factors such as surface quality and free ferrite in sticks were also affect fatigue properties.
指出，获得细小的高韧性索氏体组织是保证良好疲劳寿命的关键，稳定杆喷丸表面质量、游离铁素体也是影响疲劳性能的重要因素。
The results showed that non-sorbite layer of surface and large dimension inclusions were the sources of transversal cracks; the compound function of free ferrite and inclusions in the wires resulted in formation of the passage through which cracks propagated.
结果表明：钢丝在拉拔过程中于表面层状非索氏体和大尺寸非金属夹杂物处形成横向裂纹源，钢丝内部游离态铁素体和夹杂物的交互作用形成裂纹扩展通道。
The selection of processes, definition of major equipment, development of key technologies and application effect including hot metal dephosphorization, K-OBM-S smelting stainless steel model, free argon smelting various stainless steels and high quality extra-pure ferrite stainless steel smelting are presented emphatically.
重点介绍了工艺流程的选择、主体设备的确定和铁水脱磷、K-OBM-S冶炼不锈钢模型、无氩冶炼多种不锈钢和高质量超纯铁素体不锈钢冶炼等关键工艺技术的开发和效果。