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Abstract：
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Mirror plate is a most important part of large hydrogenerator,and its forging becomes a bottleneck of China-made large hydrogenerator.25CrMo4 has better material properties and can be used for mirror plate of large hydrogenerator.High-temperature mechanical properties of 25CrMo4 were studied with high temperature mechanical simulation technique.The influencing factors of grain uniformity were analyzed by recrystallization microstructure observation of 25CrMo4.The experimental results show that higher temperature and lower strain rate are benefitial to improve grain uniformity,and different deformation zone has different grain size.
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Funds：
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“十一五”国家科技支撑计划项目(2007BAF02B07,2007BAF02B01);;
国家自然科学基金项目(50705048)
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AuthorIntro：
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Reference：
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[1]徐长义.水电开发黄金时期即将到来中国水电如何作为[J].中国三峡建设,2008,(11):40-47.
[2]王新洪.三峡机组发电机推力轴承精密部件制造工艺[J].通用机械,2007,(10):77-79.
[3]郭会光,曲宗实.我国大锻件制造业的发展[J].大型铸锻件,2003,(1):42-45.
[4]董岚枫.大型水轮机主轴空心钢锭锻造成形关键技术的模拟研究[D].北京:清华大学,2008.
[5]韩宝军.奥氏体动态再结晶晶粒超细化及其马氏体相变研究[D].上海:上海交通大学工学,2008.
[6]Mcqueen H J.Development of dynamic recrystallization theo-ry[J].Materials Science and Engineering A,2004,387(12):203-208.
[7]Mcqueen H J,Imbert C A C.Dynamic recrystallization:plasticity enhancing structural development[J].Journal ofAlloys and Compounds,2004,378(1):35-43.
[8]雷廷权.钢的组织转变(续集)[M].北京:机械工业出版社,1985.
[9]赵乃勤.合金固态相变[M].长沙:中南大学出版社,2008.
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