| 多次返回对镍基合金K446组织与性能的影响 |
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| 引用本文： | 袁超,郭建亭,臧志新,赖万慧,刘一鸣,李洪亮. 多次返回对镍基合金K446组织与性能的影响[J]. 中国有色金属学报, 2006, 16(3): 453-458 |
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| 作者姓名： | 袁超 郭建亭 臧志新 赖万慧 刘一鸣 李洪亮 |
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| 作者单位： | 1. 中国科学院,金属研究所,沈阳,110016
2. 沈阳黎明航空发动机(集团)责任有限公司,沈阳,110043 |
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| 摘 要： | 研究返回次数对K446合金成分、组织与力学性能的影响。结果表明:随返回次数的增加,返回合金的N含量随之增加,组织中疏松数量也随之增多。返回次数对K446合金高温断裂特征和高温拉伸性能没有明显影响,但降低持久性能。通过控制冶炼过程并在重熔时补加适量C、Al、Ti等活泼元素,多次返回合金性能仍高于技术条件指标要求。
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| 关 键 词： | 镍基高温合金 返回次数 返回合金 组织 力学性能 |
| 文章编号： | 1004-0609（2006）03-0453-06 |
| 收稿时间： | 2005-08-09 |
| 修稿时间： | 2005-12-09 |
Effect of revert recycle times on microstructures and properties of nickel-base superalloy K446 |
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| YUAN Chao,GUO Jian-ting,ZANG Zhi-xin,LAI Wan-hui,LIU Yi-ming,LI Hong-liang. Effect of revert recycle times on microstructures and properties of nickel-base superalloy K446[J]. The Chinese Journal of Nonferrous Metals, 2006, 16(3): 453-458 |
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| Authors: | YUAN Chao GUO Jian-ting ZANG Zhi-xin LAI Wan-hui LIU Yi-ming LI Hong-liang |
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| Affiliation: | 1. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China; 2. Shenyang Liming Aero-Engine (Group |
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| Abstract: | The effect of the recycle times on the microstructures and mechanical properties of the revert superalloy K446 were systemically investigated.The results show that the N content increases obviously with the increase of the recycle times of revert alloys,the microporosities content is higher than that of virgin alloy. The recycle times has little effect on the fracture mechanism and tensile properties at high temperature,but reduces slightly the stress-rupture life of revert K446 alloys.The revert K446 alloys after recycled 5 times can be generally used in the casting components by controlling the casting process,because their mechanical properties are higher than those of the standard(targets.) |
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| Keywords: | cast nickel-base superalloy recycle times revert alloy microstructures mechanical properties |
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