固溶处理冷却速度对DZ417G合金组织性能的影响
Effect of cooling rate from solution heat treatment on the microstructure and mechanical Properties of superalloy DZ417G
查看参考文献19篇
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文摘
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固溶处理时，较高的冷却速度能促进DZ417G定向合金中二次和三次γ’强化相的形核，较低的冷却速度使二次γ＇相析出充分，并能抑制三次γ’相的析出．合金固溶态的室温硬度随着冷却速度的提高而提高．经980℃／16h时效处理后，三次，γ’颗粒粗化长大．较高的冷却速度有利于拉伸强度的提高，而冷却速度低有利于室温拉伸塑性的增加．固溶处理后适当的冷却速度可使合金具有最佳匹配的拉伸和持久性能． |
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其他语种文摘
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The results show that fast cooling rate from solution heat treatment promotes nucleation of the secondary and tertiary gamma prime in the directionally solidified superalloy DZ417G, while slow cooling rate favors precipitation of the secondary gamma prime other than the tertiary gamma prime. With the increasing of cooling rate, the hardness at room temperature increases. After aging at 980 ℃ for 16 hours, the tertiary gamma prime particles grow markedly with high consumption of small ones. Fast cooling rate followed by age treatment is beneficial to the tensile strength, where as slow cooling rate favors the ductility at room temperature. Good combination of tensile and stress-rupture properties can be achieved by controlling cooling rate from solution heat treatment. |
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来源
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材料研究学报
,2006,20(5):533-537 【核心库】
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关键词
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金属材料
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定向凝固高温合金
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冷却速度
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力学性能
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地址
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1.
沈阳工业大学, 沈阳, 110023
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中国科学院金属研究所, 沈阳, 110016
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1005-3093 |
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学科
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金属学与金属工艺 |
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文献收藏号
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CSCD:2616475
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