| 长期时效对DD407单晶高温合金组织和中温性能的影响 |
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| 引用本文： | 韩凤奎,燕平,赵京晨,张龙飞,曾强. 长期时效对DD407单晶高温合金组织和中温性能的影响[J]. 钢铁研究学报, 2011, 23(9): 55-58 |
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| 作者姓名： | 韩凤奎 燕平 赵京晨 张龙飞 曾强 |
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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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| 摘 要： | 研究了DD407单晶高温合金在900℃长期无应力时效过程中,组织的演变规律及其对中温性能的影响。研究结果表明：经长达3 000 h的时效后,合金的组织稳定,无有害相析出,7 6 0℃中温强度稳定,但伸长率显著提高。
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| 关 键 词： | 单晶高温合金 长期时效 DD407 组织 塑性 |
Effect of Long-Term Aging on Microstructure and Medium Temperature Performance of Single Crystal Superalloy DD407 |
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| HAN Feng-kui,YAN Ping,ZHAO Jing-chen,ZHANG Long-fei,ZENG Qiang. Effect of Long-Term Aging on Microstructure and Medium Temperature Performance of Single Crystal Superalloy DD407[J]. Journal of Iron and Steel Research, 2011, 23(9): 55-58 |
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| Authors: | HAN Feng-kui YAN Ping ZHAO Jing-chen ZHANG Long-fei ZENG Qiang |
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| Affiliation: | HAN Feng-kui,YAN Ping,ZHAO Jing-chen,ZHANG Long-fei,ZENG Qiang(High Temperature Material Research Institute,Central Iron and Steel Research Institute,Beijing 100081,China) |
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| Abstract: | Microstructure and its effect on medium temperature performance of single crystal superalloy DD407 was investigated after long-term aging without stress at 900℃ for 3000h. The results show that the microstructure of DD407 is stable and no detrimental phase precipitated. Tensile strength reminds steady and ductility increases at 760℃ after long-term aging. |
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| Keywords: | single crystal superalloy long-term ageing DD407 microstructure ductility |
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