650℃下TP321不锈钢多轴蠕变行为与失效准则研究

黄家祺; 樊柯彬; 岳凡昊; 秦仔祥; 张坤; 包士毅

doi:10.19805/j.cnki.jcspe.2026.250461

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650℃下TP321不锈钢多轴蠕变行为与失效准则研究

基础研究 | 更新时间：2026-09-15

- 650℃下TP321不锈钢多轴蠕变行为与失效准则研究
- Research on Multiaixal Creep Behavior and Failure Criteria of TP321 Stainless Steel at 650 ℃
- 动力工程学报 2026年46卷第9期页码：68-76
- 作者机构：
  
  1. 生态环境部核与辐射安全中心,北京,100000
  2. 浙江工业大学机械工程学院,浙江,杭州,310023
  3. 杭州市特种设备检验科学研究院,浙江,杭州,310014
- 作者简介：
  
  黄家祺(1991—),男,山东泰安人,研究方向为进口核安全机械设备、材料安全检验,E-mail:huangjiaqi@chinansc.cn。
- 基金信息：
  
  上海市自然科学基金面上基金资助项目(24ZR1417100);中国博士后面上基金资助项目(2024M750903)
- DOI：10.19805/j.cnki.jcspe.2026.250461
  中图分类号： TG115.5
- 纸质出版：2026
- 稿件说明：
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黄家祺, 樊柯彬, 岳凡昊, 秦仔祥, 张坤, 包士毅. 650℃下TP321不锈钢多轴蠕变行为与失效准则研究[J]. 动力工程学报, 2026, 46(9): 68-76.
黄家祺, 樊柯彬, 岳凡昊, 秦仔祥, 张坤, 包士毅. 650℃下TP321不锈钢多轴蠕变行为与失效准则研究[J]. 动力工程学报, 2026, 46(9): 68-76. DOI： 10.19805/j.cnki.jcspe.2026.250461.

DOI： 10.19805/j.cnki.jcspe.2026.250461

摘要

针对TP321奥氏体不锈钢在650 ℃下的多轴蠕变行为与失效准则展开研究。首先，综述了典型的多轴蠕变试验类型及其相关国内外标准，重点分析了环形缺口圆棒试样在模拟复杂应力状态中的优势。通过设计不同缺口比（2.80和4.67）的半圆形缺口试样，开展了多轴蠕变试验，并与单轴试验结果进行对比。其次，利用骨点应力法对多轴应力状态进行研究，进一步获得了SHL形式和Huddleston断裂失效准则参数，并对TP321材料的蠕变寿命进行拟合评估。最后，利用K-R损伤模型对材料截面的应力发展进行了有限元分析，得到相应的断裂失效准则参数。结果表明：多轴状态下TP321材料表现出明显的缺口强化效应；von Mises应力在控制TP321材料多轴蠕变寿命中占主导地位，SHL形式的断裂失效准则在本研究中的预测精度较高，具备良好的工程应用潜力，为TP321高温结构设计与寿命评估提供了理论依据和方法参考。

Abstract

The multiaxial creep behavior and failure criteria of TP321 austenitic stainless steel were studied at 650 ℃. Firstly

typical multiaxial creep test types and their relevant domestic and international standards were reviewed

with particular emphasis on the advantages of notched bar specimens in simulating complex stress states. Multiaxial creep experiments were conducted using semi-circular notched specimens with different notch ratios (2.80 and 4.67)

and the results were compared with those of uniaxial creep tests. Secondly

The bone point stress method was employed to characterize the multiaxial stress state

further obtaining the SHL form and Huddleston fracture failure criterion parameters

and fitting and evaluating the creep life of TP321 material. Finally

the finite element analysis of the stress evolution in the material cross-section was conducted by the K-R damage model

obtaining the corresponding fracture failure criterion parameters. Results show that TP321 material exhibits a significant notch strengthening effect under multiaxial loading conditions. The von Mises stress predominantly governs the creep rupture life of TP321 material

and the SHL criterion exhibits superior predictive accuracy in this study

demonstrating good potential for engineering applications and providing theoretical basis and methodological reference for the design and life assessment of TP321 high-temperature structure.

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references

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