Diffusive behavior of Zr in Ni<sub>3</sub>Al measured by positron annihilation technique

GUO Jianting LI Yufang XIONG Liangyue

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Diffusive behavior of Zr in Ni₃Al measured by positron annihilation technique

更新时间：2021-03-12

- Diffusive behavior of Zr in Ni₃Al measured by positron annihilation technique
- NUCLEAR TECHNIQUES Issue 12, (2005)
- 作者机构：
  
  1. 中国科学院金属研究所高温合金研究部
  2. 中国科学院金属研究所高温合金研究部,沈阳,110016
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目(No.59895152)资助
- DOI：
  CLC： TG115
- Published：01 December 2005
- 稿件说明：
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[1]郭建亭,李玉芳,熊良钺.正电子湮没技术测量冷却方式对Zr在Ni_3Al中扩散行为的影响[J].核技术,2005(12):909-912.

GUO Jianting LI Yufang XIONG Liangyue. Diffusive behavior of Zr in Ni₃Al measured by positron annihilation technique[J]. Nuclear techniques, 2005, (12): 909-912.
[1]郭建亭,李玉芳,熊良钺.正电子湮没技术测量冷却方式对Zr在Ni_3Al中扩散行为的影响[J].核技术,2005(12):909-912. DOI：

GUO Jianting LI Yufang XIONG Liangyue. Diffusive behavior of Zr in Ni₃Al measured by positron annihilation technique[J]. Nuclear techniques, 2005, (12): 909-912. DOI：

摘要

测量了在Ni3Al（Zr）合金经高温均匀化处理后

在空冷和水冷条件下的正电子寿命谱。结果表明

Ni3Al（Zr）合金经高温均匀化后

随即进行空冷时

随着Zr含量的增加

正电子在合金中的寿命谱特征参数降低

捕获率K降低。表明Zr原子扩散到晶界

并在晶界偏聚。而合金经高温均匀化后水冷时

合金的正电子寿命谱特征参数随着Zr含量的增加几乎没有变化。由于冷却速度较快

Zr原子来不及扩散到晶界上

而以固溶方式存在于Ni3Al基体中。

Abstract

The measurement of positron annihilation lifetime of Zr containing Ni3Al showed that the lifetime parameters of positron in Ni3Al (Zr) alloys cooled in air after homogenized at 1150℃ decreased with an increase of Zr content

which indicated that Zr atoms diffused to grain boundaries (GBs) and segregated at GBs. When alloys were cooled in water

the lifetime parameters almost kept invariable with the increase of Zr concentration

meaning that Zr atoms couldn’t diffuse to GBs because of the rapid cooling speed

but existed in Ni3A as solid solution.

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Related Author

李钢

邓文

熊良钺

郭建亭

王中光

YANG Xuanye

ZHAO Wenzheng

ZHANG Simin

Related Institution

Institute of Metal Research, Academia Sinica

中国科学院金属研究所材料疲劳与断裂国家重点实验室

中国科学院金属研究所中国科学院金属研究所材料疲劳与断裂国家重点实验室

School of Physics and Technology, Hubei Key Laboratory of Nuclear Solid State Physics, Wuhan University

Suzhou Nuclear Power Research Institute

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Diffusive behavior of Zr in Ni3Al measured by positron annihilation technique

DOI：

摘要

Abstract

关键词

Keywords

references

Diffusive behavior of Zr in Ni₃Al measured by positron annihilation technique