| FGH98粉末冶金高温合金热变形过程中组织变化 |
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| 引用本文： | 刘洋,陶字,贾建.FGH98粉末冶金高温合金热变形过程中组织变化[J].粉末冶金工业,2011,21(2):14-18. |
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| 作者姓名： | 刘洋 陶字 贾建 |
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| 作者单位： | 钢铁研究总院高温材料研究所,北京,100081 |
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| 基金项目： | 国家高技术发展计划(2007AA03A223) |
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| 摘 要： | 本文利用光学金相显微镜和扫描电镜观察了粉末冶金高温合金FGH98热等静压态锭坯经近等温锻造后的显微组织,研究了热变形对合金中原始颗粒边界(PPB)、粉末原始枝晶组织及晶粒度的影响.从动态再结晶和动态回复的角度分析了变形量对改善FGH98合金组织的作用,探索通过大变形量改善合金显微组织的途径.研究表明:经过三火锻造累积变...
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| 关 键 词： | FGH98 粉末冶金高温合金 等温锻造 再结晶 细晶组织 |
THE MICROSTRUCTURE EVOLUTION OF FGH98 P/M SUPERALLOY AFTER HOT DEFORMATION |
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| LIU Yang,TAO Yu,JIA Jian.THE MICROSTRUCTURE EVOLUTION OF FGH98 P/M SUPERALLOY AFTER HOT DEFORMATION[J].Powder Metallurgy Industry,2011,21(2):14-18. |
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| Authors: | LIU Yang TAO Yu JIA Jian |
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| Affiliation: | LIU Yang,TAO Yu,JIA Jian (High Temperature Materials Research Institute,CISRI,Beijing 100081,China) |
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| Abstract: | The microstructure of P/M superalloy FGH98 had been observed after HIP and near isothermal forging by optical microscope and SEM,and then the effect of hot deformation on primary particle boundary(PPB),grain size and dendritic structure was researched.How does the quantity of deformation(especially large deformation) affect the microstructure of FGH98 has been analysised based on dynamic recrystallization(DRX) and dynamic recovery(DRV) principle.The result shows that after three-order forging,the total quan... |
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| Keywords: | FGH98 P/M superalloy isothermal forging recrystallization fine grain |
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