强磁场对Cu-25%Ag合金析出相及性能的影响

李贵茂; 张林; 王恩刚; 左小伟; 赫冀成

doi:10.3724/SP.J.1037.2010.00218

金属学报 >

2010 , Vol. 46 >Issue 9: 1128 - 1132

DOI: https://doi.org/10.3724/SP.J.1037.2010.00218

论文

强磁场对Cu-25%Ag合金析出相及性能的影响

李贵茂 ,
张林 ,
王恩刚 ,
左小伟 ,
赫冀成

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东北大学材料电磁过程研究教育部重点实验室, 沈阳 110004

王恩刚

收稿日期: 2010-05-06

修回日期: 2010-07-05

网络出版日期: 2010-09-11

基金资助

国家高技术研究发展计划项目2007AA03Z519和高等学校学科创新引智计划项目B07015资助

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EFFECTS OF HIGH MAGNETIC FIELD ON THE PRECIPITATE AND PROPERTY OF Cu-25%Ag ALLOY

LI Gui-Mao ,
ZHANG Lin ,
YU En-Gang ,
ZUO Xiao-Wei ,
SHI Ji-Cheng

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Key Laboratory of National Education Ministry for Electromagnetic Processing of Material, Northeastern University, Shenyang 110004

WANG Engang

Received date: 2010-05-06

Revised date: 2010-07-05

Online published: 2010-09-11

Supported by

Supported by National High Technology Research and Development Program of China (No.2007AA03Z519) and Program of Introducing Talents of Discipline to University (No.B07015)

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摘要

在有无磁场条件下进行了Cu-25%Ag(质量分数)合金的凝固实验, 研究了强磁场对Cu-25%Ag合金凝固组织中富Cu枝晶内部Ag析出相的影响, 测试了合金的硬度和电导率. 发现有无磁场条件下, 在不同大小的富Cu枝晶内部, Ag析出相的形态和尺寸各不相同, 大尺寸富Cu枝晶内部的Ag析出相呈连续的棒状结构, 小尺寸富Cu枝晶内部的Ag析出相呈非连续的颗粒状结构. 另外, 无磁场条件下析出的Ag相数量较多, 尺寸较细小; 有磁场条件下析出的Ag相数量较少, 尺寸较粗大. 受到Ag析出相的影响, 强磁场条件下合金的硬度降低, 电导率升高. 对强磁场下Ag析出相的影响机理进行了探讨, 并分析了析出相对合金硬度和电导率的影响机制.

关键词： 强磁场; Cu-25%Ag; Ag析出相; 硬度; 电导率

本文引用格式

李贵茂 , 张林 , 王恩刚 , 左小伟 , 赫冀成 . 强磁场对Cu-25%Ag合金析出相及性能的影响[J]. 金属学报, 2010 , 46(9) : 1128 -1132 . DOI: 10.3724/SP.J.1037.2010.00218

Abstract

The solidification experiment of Cu-25%Ag alloy used in high field magnet was carried out under high magnetic field, the precipitation of Ag in Cu-rich dendrites, the hardness and the electrical conductivity were investigated. It was found that the Ag phase precipitated exhibites continuous rod-like morphology in the larger Cu-rich dendrites, and exhibites discontinuous particle-like morphology in the smaller Cu-rich dendrites; the number of the Ag particles is more and the size is thinner in the sample solidified under 0 T than under 12 T high magnetic field. The hardness and electrical conductivity of the alloy have changed due to the size variance of Ag precipitates.

Key words： high magnetic field; Cu-25%Ag; Ag precipitate; hardness; electrical conductivity

参考文献

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