显微裂纹 meaning in English

micro flaw
microcracking
microfissure
microflaw
microscopic crack

Abstract : a new process of modified treatment of diesel engine link was investigatea in this paper . it made the link get adaptable microstructure and hardness without microcrack
文摘:提出了一套柴油机连杆调质处理的新工艺，使连杆在没有显微裂纹的情况下得到合适的显微组织和硬度。
The network carbide and acicular martensites that existed in the microstructure of the root grooves of the spline due to improper carburating and quenching process of the shafts , led to the initiation and propagation of the intergranular microcracks and were the main reason that caused the early fracture of the shafts
由于渗碳淬火工艺不当，在二轴花键槽根部的组织中产生了网状破化物和粗大的针状马氏体，在外力作用下形成沿晶显微裂纹并扩展，是导致二轴疲劳断裂的主要原因。