Lateral surface near the fracture of before and after oxide film removing tensile sample was examined by scanning electron The relationship between surface morphology and microscopy （SEM） microstructure was establis...Lateral surface near the fracture of before and after oxide film removing tensile sample was examined by scanning electron The relationship between surface morphology and microscopy （SEM） microstructure was established. The results show that the microcracks are caused by brittleness rupture of surface oxide films due to α lamellas sliding along α lamella boundaries. And the sliding of aligned α lamellas bring not only microcrack formation but also the raise of colony relative to prior sample surface. A slip model, which depicts the relationship between surface morphology and microstructure, was brought forward to analyze the observation.展开更多
文摘Lateral surface near the fracture of before and after oxide film removing tensile sample was examined by scanning electron The relationship between surface morphology and microscopy （SEM） microstructure was established. The results show that the microcracks are caused by brittleness rupture of surface oxide films due to α lamellas sliding along α lamella boundaries. And the sliding of aligned α lamellas bring not only microcrack formation but also the raise of colony relative to prior sample surface. A slip model, which depicts the relationship between surface morphology and microstructure, was brought forward to analyze the observation.
