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| 镧对ZL702合金高温性能的影响 | |
| 引用本文： | 李培杰,曾大本,贾均,李庆春. 镧对ZL702合金高温性能的影响[J]. 中国稀土学报, 2000, 18(2): 187-189 |
| 作者姓名： | 李培杰 曾大本 贾均 李庆春 |
| 作者单位： | 1. 清华大学机械工程系,北京,100084;哈尔滨工业大学材料学院,黑龙江,哈尔滨,150001 2. 清华大学机械工程系,北京,100084 3. 哈尔滨工业大学材料学院,黑龙江,哈尔滨,150001 |
| 基金项目： | 国家教委留学回国人员专项基金 |
| 摘 要： | 研究了Ｌａ对ＺＬ７０２合金室温和高温力学性能的影响。Ｌａ与合金中的Ａ１,Ｓｉ,Ｆｅ等元素形成难熔的、分布于晶界的不连续网状金属间化合物,提高了合金的热稳定性。当Ｌａ的加入量为０．１０％～０．１５％（质量分数）时,可使合金获得较佳的综合力学性能。 |
| 关 键 词： | 稀土 镧 高温性能 硅铝合金 ZL702合金 |
| 修稿时间： | 1999-05-05 |
Effect of Lanthanum on Mechanical Properties of ZL702 Alloy at High Temperature |
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| LI Pei-jie,ZENG Da-ben,JIA Jun,LI Qing-chun. Effect of Lanthanum on Mechanical Properties of ZL702 Alloy at High Temperature[J]. Journal of the Chinese Society of Rare Earths, 2000, 18(2): 187-189 | |
| Authors: | LI Pei-jie ZENG Da-ben JIA Jun LI Qing-chun |
| Abstract: | The effect of lanthanum on microstructure and mechanical properties of ZL702alloy at high temperature condition was studied. The experiment shows that high-meltingintermetallics reticularly distributing at grain boundary are formed with La and Al, Si,Fe and other elements of alloy, which enhances the thermal stability of the alloy. Withappropriate content of La(0.10%～0.15%), the mechanical properties of the alloy, such as strength, at roomtemperature and high temperature can be improved. |
| Keywords: | rare earths lanthanum Al Si alloy high temperature mechanical properties |
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