| 热处理对第二代镍基单晶合金DD11显微组织及持久性能的影响 |
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| 引用本文： | 骆宇时,赵云松,刘志远,郭会明,方向,张剑,唐定中.热处理对第二代镍基单晶合金DD11显微组织及持久性能的影响[J].重庆大学学报(自然科学版),2016,39(3):43-50. |
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| 作者姓名： | 骆宇时 赵云松 刘志远 郭会明 方向 张剑 唐定中 |
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| 作者单位： | 1. 北京航空材料研究院先进高温结构材料重点实验室,北京,100095;2. 北京航空材料研究院先进高温结构材料重点实验室,北京100095;北京科技大学新金属材料国家重点实验室,北京100083;3. 中国航空动力机械研究所,湖南株洲,412000 |
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| 基金项目： | 国家重点基础研究发展计划资助项目(2010CB631201)。 |
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| 摘 要： | 采用光学显微镜和扫描电镜对铸态、固溶态和时效态的第二代镍基单晶合金DD11的显微组织进行定量表征,并测试了不同一级时效处理后的合金1 100℃/140MPa和980℃/250MPa条件下的持久性能。结果表明:合金经过1 320℃/6h固溶处理后,(γ+γ′)共晶相全部溶解,凝固偏析显著降低,合金组织均匀。一级时效温度低于1 160℃时,γ′相为方形,一级时效温度高于1 180℃时,γ′相为球形,γ通道显著变宽,并在通道内析出细小的γ′相。随一级时效温度提高,合金的持久寿命先增大后降低。持久性能与γ′相尺寸、体积分数及形态密切相关。
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| 关 键 词： | 单晶高温合金 固溶处理 时效处理 显微组织 持久性能 |
| 收稿时间： | 2016/1/15 0:00:00 |
Effects of heat treatment on microstrucutures and stress rupture properties of a second generation Ni-based single crystal DD11 |
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| LUO Yushi,ZHAO Yunsong,LIU Zhiyuan,GUO Huiming,FANG Xiang,ZHANG Jian and TANG Dingzhong.Effects of heat treatment on microstrucutures and stress rupture properties of a second generation Ni-based single crystal DD11[J].Journal of Chongqing University(Natural Science Edition),2016,39(3):43-50. |
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| Authors: | LUO Yushi ZHAO Yunsong LIU Zhiyuan GUO Huiming FANG Xiang ZHANG Jian and TANG Dingzhong |
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| Institution: | Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing 100095, P. R. China,Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing 100095, P. R. China;State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, P. R. China,China Aviation Powerplant Research Institute, Zhuzhou 412000, Hunan, P. R. China,Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing 100095, P. R. China,Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing 100095, P. R. China,Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing 100095, P. R. China and Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing 100095, P. R. China |
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| Abstract: | |
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| Keywords: | single crystal superalloy solution heat treatment ageing heat treatment microstrucuture stress rupture property |
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