马氏体耐热钢蠕变变形的基于机理的弹塑性-粘塑性构成模型

IF 1.5 4区 工程技术 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Engineering Computations Pub Date : 2024-06-28 DOI:10.1108/ec-02-2024-0096
Jundong Yin, Baoyin Zhu, Runhua Song, Chenfeng Li, Dongfeng Li
{"title":"马氏体耐热钢蠕变变形的基于机理的弹塑性-粘塑性构成模型","authors":"Jundong Yin, Baoyin Zhu, Runhua Song, Chenfeng Li, Dongfeng Li","doi":"10.1108/ec-02-2024-0096","DOIUrl":null,"url":null,"abstract":"<h3>Purpose</h3>\n<p>A physically-based elasto-viscoplastic constitutive model is proposed to examine the size effects of the precipitate and blocks on the creep for martensitic heat-resistant steels with both the dislocation creep and diffusional creep mechanisms considered.</p><!--/ Abstract__block -->\n<h3>Design/methodology/approach</h3>\n<p>The model relies upon the initial dislocation density and the sizes of M<sub>23</sub>C<sub>6</sub> carbide and MX carbonitride, through the use of internal variable based governing equations to address the dislocation density evolution and precipitate coarsening processes. Most parameters of the model can be obtained from existing literature, while a small subset requires calibration. Based on the least-squares fitting method, the calibration is successfully done by comparing the modeling and experimental results of the steady state creep rate at 600° C across a wide range of applied stresses.</p><!--/ Abstract__block -->\n<h3>Findings</h3>\n<p>The model predictions of the creep responses at various stresses and temperatures, the carbide coarsening and the dislocation density evolution are consistent with the experimental data in literature. The modeling results indicate that considerable effect of the sizes of precipitates occurs only during the creep at relatively high stress levels where dislocation creep dominates, while the martensite block size effect happens during creep at relatively low stress levels where diffusion creep dominates. The size effect of M<sub>23</sub>C<sub>6</sub> carbide on the steady creep rate is more significant than that of MX precipitate.</p><!--/ Abstract__block -->\n<h3>Originality/value</h3>\n<p>The present study also reveals that the two creep mechanisms compete such that at a given temperature the contribution of the diffusion creep mechanism decreases with increasing stress, while the contribution of the dislocation creep mechanism increases.</p><!--/ Abstract__block -->","PeriodicalId":50522,"journal":{"name":"Engineering Computations","volume":"10 1","pages":""},"PeriodicalIF":1.5000,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A mechanism-based elasto-viscoplastic constitutive model for the creep deformation of martensitic heat-resistant steels\",\"authors\":\"Jundong Yin, Baoyin Zhu, Runhua Song, Chenfeng Li, Dongfeng Li\",\"doi\":\"10.1108/ec-02-2024-0096\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3>Purpose</h3>\\n<p>A physically-based elasto-viscoplastic constitutive model is proposed to examine the size effects of the precipitate and blocks on the creep for martensitic heat-resistant steels with both the dislocation creep and diffusional creep mechanisms considered.</p><!--/ Abstract__block -->\\n<h3>Design/methodology/approach</h3>\\n<p>The model relies upon the initial dislocation density and the sizes of M<sub>23</sub>C<sub>6</sub> carbide and MX carbonitride, through the use of internal variable based governing equations to address the dislocation density evolution and precipitate coarsening processes. Most parameters of the model can be obtained from existing literature, while a small subset requires calibration. Based on the least-squares fitting method, the calibration is successfully done by comparing the modeling and experimental results of the steady state creep rate at 600° C across a wide range of applied stresses.</p><!--/ Abstract__block -->\\n<h3>Findings</h3>\\n<p>The model predictions of the creep responses at various stresses and temperatures, the carbide coarsening and the dislocation density evolution are consistent with the experimental data in literature. The modeling results indicate that considerable effect of the sizes of precipitates occurs only during the creep at relatively high stress levels where dislocation creep dominates, while the martensite block size effect happens during creep at relatively low stress levels where diffusion creep dominates. The size effect of M<sub>23</sub>C<sub>6</sub> carbide on the steady creep rate is more significant than that of MX precipitate.</p><!--/ Abstract__block -->\\n<h3>Originality/value</h3>\\n<p>The present study also reveals that the two creep mechanisms compete such that at a given temperature the contribution of the diffusion creep mechanism decreases with increasing stress, while the contribution of the dislocation creep mechanism increases.</p><!--/ Abstract__block -->\",\"PeriodicalId\":50522,\"journal\":{\"name\":\"Engineering Computations\",\"volume\":\"10 1\",\"pages\":\"\"},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2024-06-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Engineering Computations\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1108/ec-02-2024-0096\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Engineering Computations","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1108/ec-02-2024-0096","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS","Score":null,"Total":0}
引用次数: 0

摘要

设计/方法/方法该模型依赖于初始位错密度以及 M23C6 碳化物和 MX 碳氮化物的尺寸,通过使用基于内部变量的控制方程来解决位错密度演变和沉淀粗化过程。模型的大部分参数可从现有文献中获得,只有一小部分需要校准。基于最小二乘法拟合方法,通过比较 600° C 时在各种施加应力下的稳态蠕变速率的建模和实验结果,成功地完成了校准。模型结果表明,只有在位错蠕变占主导地位的相对较高应力水平的蠕变过程中,析出物尺寸才会产生相当大的影响;而在扩散蠕变占主导地位的相对较低应力水平的蠕变过程中,马氏体块尺寸会产生影响。M23C6 碳化物的尺寸对稳定蠕变速率的影响比 MX 沉淀的影响更为显著。本研究还揭示了两种蠕变机制的竞争关系,即在给定温度下,扩散蠕变机制的贡献随应力的增加而减少,而位错蠕变机制的贡献则增加。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
A mechanism-based elasto-viscoplastic constitutive model for the creep deformation of martensitic heat-resistant steels

Purpose

A physically-based elasto-viscoplastic constitutive model is proposed to examine the size effects of the precipitate and blocks on the creep for martensitic heat-resistant steels with both the dislocation creep and diffusional creep mechanisms considered.

Design/methodology/approach

The model relies upon the initial dislocation density and the sizes of M23C6 carbide and MX carbonitride, through the use of internal variable based governing equations to address the dislocation density evolution and precipitate coarsening processes. Most parameters of the model can be obtained from existing literature, while a small subset requires calibration. Based on the least-squares fitting method, the calibration is successfully done by comparing the modeling and experimental results of the steady state creep rate at 600° C across a wide range of applied stresses.

Findings

The model predictions of the creep responses at various stresses and temperatures, the carbide coarsening and the dislocation density evolution are consistent with the experimental data in literature. The modeling results indicate that considerable effect of the sizes of precipitates occurs only during the creep at relatively high stress levels where dislocation creep dominates, while the martensite block size effect happens during creep at relatively low stress levels where diffusion creep dominates. The size effect of M23C6 carbide on the steady creep rate is more significant than that of MX precipitate.

Originality/value

The present study also reveals that the two creep mechanisms compete such that at a given temperature the contribution of the diffusion creep mechanism decreases with increasing stress, while the contribution of the dislocation creep mechanism increases.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Engineering Computations
Engineering Computations 工程技术-工程:综合
CiteScore
3.40
自引率
6.20%
发文量
61
审稿时长
5 months
期刊介绍: The journal presents its readers with broad coverage across all branches of engineering and science of the latest development and application of new solution algorithms, innovative numerical methods and/or solution techniques directed at the utilization of computational methods in engineering analysis, engineering design and practice. For more information visit: http://www.emeraldgrouppublishing.com/ec.htm
期刊最新文献
Dislocation-based finite element method for homogenized limit domain characterization of structured metamaterials A dual opposition learning-based multi-objective Aquila Optimizer for trading-off time-cost-quality-CO2 emissions of generalized construction projects An efficient concrete plastic damage model for crack propagation in gravity dams during seismic action A new thermo-optical system with a fractional Caputo operator for a rotating spherical semiconductor medium immersed in a magnetic field Optimizing high-temperature geothermal extraction through THM coupling: insights from SC-CO2 enhanced modeling
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1