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材料工程  2014, Vol. 0 Issue (8): 46-50    DOI: 10.11868/j.issn.1001-4381.2014.08.009
  材料与工艺 本期目录 | 过刊浏览 | 高级检索 |
不同稀土元素添加量对K465合金微观组织与力学性能的影响
王定刚, 肖程波, 宋尽霞, 李青, 余乾
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
Effects of Rare-earth Elements Content on Microstructure and Mechanical Properties of K465 Superalloy
WANG Ding-gang, XIAO Cheng-bo, SONG Jin-xia, LI Qing, YU Qian
Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing 100095, China
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摘要 利用金相技术和扫描电镜(SEM)观察分析了稀土元素(Ce+Y)含量对K465合金微观组织的影响,并测试了合金的室温瞬时拉伸性能和高温持久性能。结果表明:(Ce+Y)含量为0.03%(质量分数,下同)的合金碳化物变质处理后形态良好,高温持久性能大幅提高;(Ce+Y)含量为0.06%的合金枝晶间区大块γ'相的边缘析出富(Ce+Y)相,从而使合金的持久性能明显下降。
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王定刚
肖程波
宋尽霞
李青
余乾
关键词 K465合金稀土元素微观组织力学性能    
Abstract:The effect of (Ce+Y) content on microstructure of K465 superalloy was examined by metallography technique and scanning electron microscope(SEM). The tensile properties at room temperature and the high temperature stress-rupture properties were tested. The results show that the morphology of carbides can be well modified by addition 0.03%(mass fraction) of (Ce+Y) which induces the improvement of high temperature stress-rupture properties. The high temperature stress-rupture properties decrease due to the precipitation of rich (Ce+Y) phases besides the large size γ' phases in the interdendritic area while adding 0.06% of (Ce+Y).
Key wordsK465 superalloy    rare-earth element    microstructure    mechanical property
收稿日期: 2014-04-28     
1:  TG132.3+2  
通讯作者: 王定刚(1978-),男,硕士,主要从事铸造高温合金方面研究工作,联系地址:北京市81信箱1分箱(100095),E-mail:wangdinggang@163.com     E-mail: wangdinggang@163.com
引用本文:   
王定刚, 肖程波, 宋尽霞, 李青, 余乾. 不同稀土元素添加量对K465合金微观组织与力学性能的影响[J]. 材料工程, 2014, 0(8): 46-50.
WANG Ding-gang, XIAO Cheng-bo, SONG Jin-xia, LI Qing, YU Qian. Effects of Rare-earth Elements Content on Microstructure and Mechanical Properties of K465 Superalloy. Journal of Materials Engineering, 2014, 0(8): 46-50.
链接本文:  
http://jme.biam.ac.cn/jme/CN/10.11868/j.issn.1001-4381.2014.08.009      或      http://jme.biam.ac.cn/jme/CN/Y2014/V0/I8/46
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