摘要
利用光学显微镜、扫描电子显微镜及X射线能谱仪对20钢火药筒失效样品的断口形貌和显微组织进行了分析。结果表明:开裂主要原因为退火工艺不当导致碳化物粗大并沿晶积聚。
The microstructure and fracture morpholo gy of steel 20 were studied using scanning electron microscope (SEM) and X-ray diffractometer (XRD).The test results showed that the crack is attributed to the carbide coarsening and distributing along grain boundary.The cracking is mainly caused by improper annealing temperature.
出处
《物理测试》
CAS
2005年第1期48-49,共2页
Physics Examination and Testing
