|本期目录/Table of Contents|

[1]薛吉林,周昌玉,王波,等.基于蠕变损伤的P91钢应力-应变本构关系[J].南京工业大学学报(自然科学版),2013,35(04):33-37.[doi:10.3969/j.issn.1671-7627.2013.04.007]
 XUE Jilin,ZHOU Changyu,WANG Bo,et al.Stress-strain constitutive relation of P91 steel based on creep damage[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2013,35(04):33-37.[doi:10.3969/j.issn.1671-7627.2013.04.007]
点击复制

基于蠕变损伤的P91钢应力-应变本构关系()
分享到:

《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
35
期数:
2013年04期
页码:
33-37
栏目:
出版日期:
2013-07-01

文章信息/Info

Title:
Stress-strain constitutive relation of P91 steel based on creep damage
文章编号:
1671-7627(2013)04-0033-05
作者:
薛吉林周昌玉王波彭剑
南京工业大学 机械与动力工程学院,江苏 南京 211800
Author(s):
XUE JilinZHOU ChangyuWANG BoPENG Jian
College of Mechanical and Power Engineering,Nanjing University of Technology, Nanjing 211800, China
关键词:
蠕变损伤 等时应力-应变曲线 抗拉强度 本构关系
Keywords:
creep damage isochronous stress-strain curve tensile strength constitutive relation
分类号:
TQ055.8
DOI:
10.3969/j.issn.1671-7627.2013.04.007
文献标志码:
A
摘要:
高温下材料的本构关系和时间相关,可以由高温等时应力-应变曲线表示。对P91钢分别进行高温(600 ℃)短时拉伸实验,高温蠕变100、500和900 h实验之后的高温短时拉伸实验,以及完整的蠕变断裂实验。结果表明:用高温等时应力-应变曲线描述P91钢高温蠕变损伤后的本构关系极为保守。由此,引入寿命分数参数定义材料的高温蠕变损伤,获得了P91钢发生高温蠕变损伤后材料抗拉强度与蠕变损伤的关系,修正了高温等时应力-应变曲线,建立了基于蠕变损伤的P91钢应力-应变本构方程。
Abstract:
The material constitutive relation at high temperature was related to time and could be indicated by isochronous stress-strain curve. Experiments on P91 steel, such as instantaneous tensile tests at 600 ℃, high-temperature instantaneous tensile tests after 100, 500 and 900 h creep tests, and creep rupture tests, were performed respectively. The results showed that the isochronous stress-strain curve was extremely conservative to describe the material constitutive relation of P91 steel after high-temperature creep damage. By defining creep damage under high temperature based on life fraction parameter, the relation of tensile strength of P91 steel with creep damage was obtained, and the isochronous stress-strain curve at high temperature was modified, therefore, the constitutive relation equation of P91 steel with creep damage at high temperature was established.

参考文献/References:

[1] Hald J.Creep strength and ductility of 9% to 12% chromium steels [J].Materials at High Temperatures,2004,21(1):41-46.
[2] Spigarelli S,Quadrini E.Analysis of the creep behaviour of modified
  P91(9Cr-1Mo-Nb-V)welds [J].Materials and Design,2002,23(6):547-552.
[3] Hyde T H,Becker A A,Sun W,et al.Finite-element creep damage analyses of P91 pipes [J].International Journal of Pressure Vessels and Piping,2006,83(11/12):853-863.
[4] Masanori A,Nobuhiro I,Koichi K,et al.Effect of ratchet strain on fatigue and creep-fatigue strength of Mod.9Cr-1Mo steel [J].Nuclear Engineering and Design,2012,247:66-75.
[5] Yukio T.Study on creep-fatigue evaluation procedures for high-chromium steels [J].International Journal of Pressure Vessels and Piping,2008,85(6):406-440.
[6] Kim C S,Kwun S I,Park I K.Characterization of creep-fatigue in ferritic 9Cr-1Mo-V-Nb steel using ultrasonic velocity [J].Journal of Nuclear Materials,2008,377(3):496-500.
[7] Hyde T H,Saber M,Sun W.Creep crack growth data and prediction for a P91 weld at 650 C[J].International Journal of Pressure Vessels and Piping,2010,87(12):721-729.
[8] Shervin M,Zhang Y,Nikbin K.Prediction of creep crack growth properties of P91 parent and welded steel using remaining failure strain criteria [J].Engineering Fracture Mechanics,2010,77(15):3035-3042.
[9] 张国栋,周昌玉.焊接接头残余应力及蠕变损伤的有限元模拟[J].金属学报,2008,44(7):848-852.
[10] 张国栋,周昌玉,薛吉林.内压与焊接残余应力共同作用下高温管道蠕变有限元分析[J].金属学报,2008,44(10):1271-1276.
[11] 张国栋,薛吉林,周昌玉.基于正交试验设计的高温管道焊接工艺优化[J].焊接学报,2008,29(11):53-56.
[12] 蔡连元,李益民,史志刚,等.P91主蒸汽管道焊接接头的蠕变特性和寿命估算[J].动力工程,2007,27(3):469-472.
[13] 涂善东.高温结构完整性原理[M].北京:科学出版社,2003:432-437.
[14] 胡正飞,杨振国,何国求,等.超期服役马氏体耐热钢主蒸汽管的损伤和评价[J].金属热处理,2007,32(增刊1):270-274.
[15] Shankar V,Valsan M,Bhanu Sankara Rao K,et al.Room temperature tensile behavior of service exposed and thermally aged service exposed alloy 625[J].Scripta Materialia,2001,44(12):2703-2711.
[16] Jang J,Choi Y,Lee Y H,et al.Instrumented microindentation studies on long-term aged materials:work-hardening exponent and yield ratio as new degradation indicators [J].Materials Science and Engineering:A,2005,395(1/2):295-300.
[17] 王仁.塑性力学基础[M].北京:科学出版社,1982.
[18] Theofel H.Investigations on matching P91 welds under creep loading [R].[S.l.]:AIF,1997.
[19] Garofalo F.An empirical relation defining the stress dependence of minimum creep rate in metals [J].Transactions of the Meta-llurgical Society of AIME,1963,227(2):351-355.

备注/Memo

备注/Memo:
收稿日期:2012-11-25
基金项目:江苏省自然科学基金(BK2008373); 江苏省普通高校研究生科研创新计划(CX10B_164Z)
作者简介:薛吉林(1984—),男,河南济源人,博士生,主要研究方向为高温管道可靠性、安全评价与寿命预测; 周昌玉(联系人),教授, E-mail:changyu_zhou@163.com..
更新日期/Last Update: 2013-07-07