摘要
使用扫描电镜、能谱分析和背散射电子衍射等方法分析了药芯焊丝拉拔断裂的原因。结果表明，珠光体团中大块状渗碳体在拉拔过程中不易发生塑性变形，与基体脱离，形成裂纹源，裂纹在拉拔过程中快速扩展而导致焊丝最终断裂。
The fracture analysis of flux cored wire electron microscope （ SEM ）, energy dispersive diffraction （EBSD）. It was found that, due to its pearlites were easily broken up with the substrate, propagated Key Words during elongation was pertormed using scanning X-ray （ EDX ） and electron backscattered poor deformability, the big cementite blocks in where became the origins of cracks. The cracks quickly during the wire-drawing process and finally resulted in the fracturing
出处
《首钢科技》
2012年第3期40-42,54,共4页
Shougang Science and Technology
