the microstructure characteristics, macro and micro fracture morphology of brittle broken embedded casting closure of t9815 turbines were investigated by means of metallographical examination and sem.
借助光学显微镜、扫描电镜等手段,对用埋铸法生产的t9815气轮机组隔板断裂部位的金相组织特征,宏观和微观断口形貌等进行了研究。