金相学
jīn xiànɡ xué
- 名metallography
金相学-
方法：检测各代试样的抗拉强度、伸长率、硬度等机械性能指标，比较相应的金相学检查，气孔及非金属性夹杂物分析，化学成分分析。
Methods : To analysis the physical properties include tensile strength , elongation and hardness of each generational samples comparing the metallographic evaluation of porosity defects , non metal inclusions , grain structure and changed composition .