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讨论了HYRH12各种退火工艺及退火组织,分析了辊坯球化退火不正常组织,并与NADCA#207标准退火组织评级图进行了对比和说明。
Various annealing processes and annealed microstructures of HYRH12 were discussed. The abnormal microstructure of roller blanked annealed was analyzed and compared with that of NADCA # 207 standard annealed microstructure.