| 7050合金淬火析出相的脱溶析出行为研究 |
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| 引用本文： | 李培跃,熊柏青,张永安,李志辉,朱宝宏,王锋. 7050合金淬火析出相的脱溶析出行为研究[J]. 稀有金属, 2011, 35(3). DOI: 10.3969/j.issn.0258-7076.2011.03.002 |
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| 作者姓名： | 李培跃 熊柏青 张永安 李志辉 朱宝宏 王锋 |
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| 作者单位： | 北京有色金属研究总院有色金属材料制备加工国家重点实验室,北京,100088 |
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| 基金项目： | 国家自然科学基金，国际科技合作项目 |
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| 摘 要： | 采用事温水作为淬火介质进行Jominy末端淬火实验,采集了合金淬火过程试样的温度-时间变化曲线,测定了末端淬火试样距淬火端不同距离合金的淬火态电导率和硬度,结合透射电镜组织观察,研究了冷却速率对合金过饱和固溶体脱溶析出的影响,通过观察淬火析出相非均质形核,考察了7050合金过饱和固溶体淬火脱溶析出相的析出规律.结果表明,淬火冷却速率对7050合金的过饱和固溶体的脱溶析出行为有着显著影响.末端淬火实验过程中,合金过饱和固溶体大角晶界、小角晶界、晶内弥散相周围分别在距淬火端5,10和15 mm出现淬火析出相.随着距淬火端距离的增加,淬火态合金导电率呈上升趋势,合金淬火析出相尺寸变大,体积分数增加.合金淬火平衡η相的非均质形核核心的优先次序为:晶界、亚晶界、A国<,3>Zr等纳米级弥散相粒子.
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| 关 键 词： | 末端淬火 电导率 冷却速率 非均质形核 |
Precipitation Behavior of Quench-Induced Precipitates of 7050 Alloy |
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| Li Peiyue,Xiong Baiqing,Zhang Yongan,Li Zhihui,Zhu Baohong,Wang Feng. Precipitation Behavior of Quench-Induced Precipitates of 7050 Alloy[J]. Chinese Journal of Rare Metals, 2011, 35(3). DOI: 10.3969/j.issn.0258-7076.2011.03.002 |
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| Authors: | Li Peiyue Xiong Baiqing Zhang Yongan Li Zhihui Zhu Baohong Wang Feng |
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| Abstract: | The Jominy end quench test was used to evaluate the hardenability of 7050 alloys.Room-temperature water was adopted as quenching media.Heating and cooling rate of the 7050 bar was monitored.The as-quenched hardness and electrical conductivity as well as the microstructure of alloys at different distances from the quenched end were collected.The results indicated that the precipitation of the quenched-induced precipitates was influenced by the cooling rate greatly.The quench-induced precipitates appeared at ... |
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| Keywords: | jominy end quench electrical conductivity cooling rate heterogeneous nucleation |
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