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| 复合板设备检漏的几种方法 | |
| 引用本文： | 汤慧萍 黄伯云 刘海彦 黄愿平 刘咏 欧阳鸿武. 复合板设备检漏的几种方法[J]. 稀有金属材料与工程, 2004, 21(1): 43-44 |
| 作者姓名： | 汤慧萍 黄伯云 刘海彦 黄愿平 刘咏 欧阳鸿武 |
| 作者单位： | 1. 西北有色金属研究院,陕西,西安,710016;中南大学粉末冶金国家重点实验室,湖南,长沙,410083 2. 中南大学粉末冶金国家重点实验室,湖南,长沙,410083 3. 西北有色金属研究院,陕西,西安,710016 |
| 基金项目： | “十五”863资助项目(2001AA332010) |
| 摘 要： | 通过室温拉伸及扫描电镜(SEM)分析，研究了添加不同含量的稀土元素Nd对烧结态粉末钛合金的断口及力学性能的影响。结果表明，添加稀土元素可以有效改善粉末钛合金的室温塑性，使烧结态粉末钛合金室温延伸率达到21％，达到了熔断材水平。而且加入稀土后，在粉末钛合金中形成了稀土氧化物颗粒，颗粒尺寸小于5μm，在拉伸过程中，稀土氧化物断裂，起到了颗粒强化作用。添加0．8％～1．2％(质量分数)稀土钕可以得到室温综合性能优良的低成本粉末钛合金。 |
| 关 键 词： | 粉末钛合金 稀土 烧结 拉伸性能 |
| 文章编号： | 1002-185X(2004)01-0043-04 |
| 修稿时间： | 2003-06-19 |
The Methods of Leak Hunting for Clad Plate Equipment |
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| Tang Huiping,Huang Baiyun,Liu Haiyan,Huang Yuanping,Liu Yong,Ouyang Hongwu. The Methods of Leak Hunting for Clad Plate Equipment[J]. Rare Metal Materials and Engineering, 2004, 21(1): 43-44 | |
| Authors: | Tang Huiping Huang Baiyun Liu Haiyan Huang Yuanping Liu Yong Ouyang Hongwu |
| Abstract: | The mechanical properties, especially the elongation of the powder metallurgy (PM) Ti alloy (Ti12LC, Ti8LC) at room temperature are less than optimal due to oxygen contamination and porosity. The results of this work show that the addition of the rare earth element Nd to the PM Ti alloy resulted in improved tensile strength and elongation. The alloy containing 0.8wt% Nd has a tensile strength of 1 080MPa and an elongation of 14%. Almost the same as those of wrought material, while the processing cost was lower. The rare earth element served to scavenge oxygen from the powder surfaces thereby purifying the particle interfaces. This together with a decrease of the oxygen content of Ti substrate plus the formation of Nd oxides resulted in mechanical properties of PM Ti alloy. |
| Keywords: | PM Ti alloy rare earth mechanical properties |
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