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通过电学性能表征一种新型镍铁基合金的短时时效析出行为

Characterizing Short-Time Aging Precipitation Behavior of a Novel Nickel-Iron-Based Alloy via Electrical Performance.

作者信息

Cai Junjian, Qian Chengkai, Huo Xin, Liu Qu, Li Kejian, Ji Wen, Li Zheng, Yang Zhengang, Cheng Jun, Fan Manjie, Cai Zhipeng

机构信息

Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China.

AVIC Changhe Aircraft Industry (Group) Co., Ltd., Jingdezhen 333000, China.

出版信息

Materials (Basel). 2024 Aug 21;17(16):4143. doi: 10.3390/ma17164143.

DOI:10.3390/ma17164143
PMID:39203320
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11355978/
Abstract

In this paper, the precipitation behavior and its effect on resistivity in a new type of nickel-iron-based alloy during short-term aging were investigated. During the aging process, the γ' phase increases in average size and decreases in number, with its area fraction fluctuating over time. This fluctuation is caused by the mismatch in the redissolution and growth rates of the γ' phase. As the area fraction of the γ' phase increases, the content of solute atoms in the matrix that scatter electrons decreases, lowering the resistivity of the alloy. Additionally, the continuous precipitation of M23C6 at grain boundaries during aging causes the resistivity to gradually increase. This paper explains the fluctuation in the total amount of γ' phase during short-term aging and proposes a new method for characterizing the precipitation behavior of the γ' phase in the novel alloy using the relative trend of resistivity changes.

摘要

本文研究了一种新型镍铁基合金在短期时效过程中的析出行为及其对电阻率的影响。在时效过程中，γ'相的平均尺寸增大而数量减少，其面积分数随时间波动。这种波动是由γ'相的再溶解和生长速率不匹配引起的。随着γ'相面积分数的增加，基体中散射电子的溶质原子含量降低，合金的电阻率降低。此外，时效过程中M23C6在晶界处的连续析出导致电阻率逐渐升高。本文解释了短期时效过程中γ'相总量的波动情况，并提出了一种利用电阻率变化的相对趋势来表征新型合金中γ'相析出行为的新方法。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f267/11355978/c25b127207ef/materials-17-04143-g018.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f267/11355978/c25b127207ef/materials-17-04143-g018.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f267/11355978/1dc617cda976/materials-17-04143-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f267/11355978/c25b127207ef/materials-17-04143-g018.jpg

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