锆合金氧化膜的内应力计算

张君松; 吕俊男; 龙冲生; 廖京京

doi:10.13832/j.jnpe.2021.04.0101

锆合金氧化膜的内应力计算

doi: 10.13832/j.jnpe.2021.04.0101

张君松^1,,
吕俊男¹,
龙冲生^1, ,,
廖京京^{1, 2}

1.
中国核动力研究设计院反应堆燃料及材料重点实验室，成都，610213
2.
清华大学工程物理系，北京，100084

基金项目: 国家自然科学基金（11775206）

详细信息

作者简介:
张君松（1988—），女，博士研究生，现从事反应堆材料方面的研究，E-mail: 659979076@qq.com

通讯作者:
龙冲生，E-mail: ewiges@126.com

中图分类号: TL352
计量
- 文章访问数: 186
- HTML全文浏览量: 125
- PDF下载量: 37
- 被引次数: 0
出版历程
- 收稿日期: 2020-05-14
- 修回日期: 2020-06-02
- 刊出日期: 2021-08-15

Calculation of Internal Stress in Oxide Films of Zirconium Alloy

1.
Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu, 610213, China
2.
Department of Engineering Physics, Tsinghua University, Beijing, 100084, China

摘要

摘要: 锆合金氧化膜中的内应力是锆合金腐蚀动力学中的重要影响因素，目前没有统一的方法得到氧化膜中内应力的大小，且数值差异较大。在传统的实验和理论方法的基础上，建立ZrO₂/Zr合金双层氧化弯曲几何模型，计算不同腐蚀状态下氧化膜中的内应力大小，得到内应力变化规律并分析其影响因素，为锆合金氧化膜内应力研究提供了一种较为可靠的方法。
- 锆合金氧化膜 /
- 内应力 /
- 挠度
Abstract: The internal stress in the oxide film of zirconium alloy is an important factor in the corrosion kinetics of zirconium alloy. At present, there is no unified method to obtain the internal stress in the oxide film, and the data is quite different. Based on the traditional experimental and theoretical methods, the double layer oxidation bending model of ZrO₂/Zr is established, the internal stress in the oxide film under different corrosion conditions is calculated, the change rule of the internal stress is obtained and the influencing factors is analyzed, which provides a more reliable way for the research of the internal stress in the oxide film of zirconium alloy.
- Oxide film /
- Internal stress /
- Deflection

HTML全文

图 1 锆合金双层氧化弯曲示意图

r—曲率半径；θ—弯曲角度； h₁—Zr合金基底层的厚度；h₂—ZrO₂膜的厚度；w —Zr合金基底层的宽度；x —相对中性层距离

Figure 1. Diagram of Double Layer Oxidation Bending Zirconium　　　　　

下载: 全尺寸图片幻灯片

表 1 锆合金的类型、腐蚀条件及氧化膜厚度

Table 1. Types, Corrosion Conditions and Film Thicknessof Zircaloy　　　　

锆合金类型	腐蚀条件	腐蚀厚度/μm
Zr-Sn-Nb合金	400℃/10.3 MPa蒸汽	3.6
Zr-4	360℃/18.6 MPa锂水	5
改进型N18	360℃/18.6 MPa锂水	8
Zr-Sn-Nb合金	400℃/10.3 MPa蒸汽	14
N18	500℃/10.3 MPa蒸汽	18
改进型N18	360℃/18.6 MPa锂水	46
改进型N18	360℃/18.6 MPa锂水	77

下载: 导出CSV

表 2 氧化膜样品线切割后的各参数及对应的内应力值

Table 2. Parameters and Corresponding Internal Stress Dates of Samples

膜厚度/ μm	最高点/ mm	切割厚度/ mm	挠度/ mm	长度/ mm	氧化膜弯曲曲率	应力/ GPa
3.6	0.638	0.596	0.042	15.22	1.451	2.363
3.6	0.673	0.636	0.037	15.2	1.281	2.369
5	0.807	0.77	0.037	19.7	0.7627	1.497
5	0.81	0.774	0.036	19.7	0.742	1.47
8	0.612	0.487	0.125	20.4	2.403	1.259
8	0.608	0.462	0.146	20.4	2.807	1.331
14	0.592	0.486	0.106	19.9	2.141	0.69
14	0.58	0.456	0.124	20.2	2.431	0.697
18	0.617	0.46	0.157	21.1	3.109	0.742
18	0.613	0.464	0.149	20.08	2.957	0.716
46	0.821	0.758	0.063	20.01	1.259	0.36
46	0.801	0.736	0.065	20.03	1.296	0.35
77	0.75	0.686	0.064	20	1.28	0.23
77	0.758	0.697	0.061	19.98	1.222	0.224

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参考文献(10)

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