stereoscan

The pattern of fracture by impact penetration test and tensile fatigue test of thermite welding with stereoscan was observed,and the component of defect with energy spectrum was analyed.

微观缺陷括微孔和,其中微孔由微气孔和微缩孔组成,物按形态和尺分为团簇状、锥状、粒状、积聚物、丝状和混合形。