Al-Mg-Si合金线导电率演变规律与机制

doi:10.13251/j.issn.0254-6051.2021.03.035

金属热处理 ›› 2021, Vol. 46 ›› Issue (3): 175-179.DOI: 10.13251/j.issn.0254-6051.2021.03.035

Al-Mg-Si合金线导电率演变规律与机制

陈庆吟^1,2, 盛叶弘^1,2, 李瑞¹, 侯嘉鹏³, 王强³, 张哲峰³

1.浙江华电器材检测研究所有限公司国家电力器材产品安全性能质量监督检验中心, 浙江杭州 310015;
2.浙江华云清洁能源有限公司, 浙江杭州 310002;
3.中国科学院金属研究所材料疲劳与断裂实验室, 辽宁沈阳 110016

收稿日期:2020-11-29 出版日期:2021-03-25 发布日期:2021-05-08
作者简介:陈庆吟(1983—),女,工程师,主要研究方向为电力器材检测与研究,E-mail:4493056@qq.com
基金资助:
国家电网浙江省电力公司项目(5211HD190002)

Evolution law and mechanisms of electrical conductivity of Al-Mg-Si alloy wire

Chen Qingyin^1,2, Sheng Yehong^1,2, Li Rui¹, Hou Jiapeng³, Wang Qiang³, Zhang Zhefeng³

1. National Quality Supervision & Inspection Center of Electrical Equipment Safety Performance, Zhejiang Huadian Equipment Testing Institute Co., Ltd., Hangzhou Zhejiang 310015, China;
2. Zhejiang Huayun Clean Energy Co., Ltd., Hangzhou Zhejiang 310002, China;
3. Laboratory of Fatigue and Fracture for Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang Liaoning 110016, China

Received:2020-11-29 Online:2021-03-25 Published:2021-05-08

摘要/Abstract

摘要： 通过不同温度退火处理模拟架空输电用Al-Mg-Si合金线的热服役环境,对不同退火温度下Al-Mg-Si合金线的导电率演变规律与机制进行了研究。结果表明,Al-Mg-Si合金线的导电率随着退火温度的升高呈现3阶段特征,第一阶段温度为90~150 ℃,Al-Mg-Si合金线导电率略微增大,缺陷的回复是本阶段Al-Mg-Si合金线导电率增大的原因;第二阶段温度为150~200 ℃,析出相的长大和固溶原子的析出导致Al-Mg-Si合金线导电率大幅增大;第三阶段温度为200~300 ℃,晶粒长大是Al-Mg-Si合金线导电率缓慢增大的主要原因。

关键词: Al-Mg-Si合金线, 退火处理, 导电率, 晶粒长大, 析出相

Abstract: Thermal service environment of Al-Mg-Si alloy wire used for overhead transmission lines was simulated by annealing at different temperatures, the evolution law and mechanisms of electrical conductivity of the Al-Mg-Si alloy wire annealed at different temperatures were investigated. The results show that the electrical conductivity increasing of the annealed Al-Mg-Si alloy wire could be divided into three stages with the increase of annealing temperature. In the first stage (temperature ranges from 90 ℃ to 150 ℃), the electrical conductivity increases slightly, which is caused by the defect recovery. In the second stage (temperature ranges from 150 ℃ to 200 ℃), the growth of precipitates and the precipitation of solid solution atoms lead to the rapid increase of the electrical conductivity. In the third stage (temperature ranges from 200 ℃ to 300 ℃), the grain growth is the main reason for the slow increase of the electrical conductivity.

Key words: Al-Mg-Si alloy wire, annealing treatment, electrical conductivity, grain growth, precipitates

中图分类号:

TG166.3

陈庆吟, 盛叶弘, 李瑞, 侯嘉鹏, 王强, 张哲峰. Al-Mg-Si合金线导电率演变规律与机制[J]. 金属热处理, 2021, 46(3): 175-179.

Chen Qingyin, Sheng Yehong, Li Rui, Hou Jiapeng, Wang Qiang, Zhang Zhefeng. Evolution law and mechanisms of electrical conductivity of Al-Mg-Si alloy wire[J]. Heat Treatment of Metals, 2021, 46(3): 175-179.

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Al-Mg-Si合金线导电率演变规律与机制

Evolution law and mechanisms of electrical conductivity of Al-Mg-Si alloy wire

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