Paper Titles

Evolution of Impact Properties of 16MND5 Forgings for Nuclear Reactor Pressure Vessel during Thermal Aging at 500°C
p.54

Fatigue Life Properties of Stainless Steels in Wide Ranged Biaxial Stress State
p.60

Investigation of Mechanical Properties and Ductile-Brittle Transition Behaviors of SA738Gr.B Steel Used as Reactor Containment
p.66

Research on the Micro-Mechanical State at Tip of Environmentally Assisted Cracking Based on Latin Hypercube Sampling Method
p.74

A more Accurate Constraint Parameter to Characterize the Creep Constraint Effect at Crack Tip of Cr-Mo-V Steel
p.79

The Precipitation Behavior and Mechanical Properties of Long Term Serviced HR3C/T92 Dissimilar Joint
p.86

Effects of Curing Temperature and Pressure on the Mechanical Properties of Gasket Material Used for Polymer Electrolyte Membrane Fuel Cells
p.93

Study on Stress Corrosion Cracking Sensitivity of CrNiMoV Steam Turbine Rotor Steels
p.102

Low Velocity Impact Responses of GLARE Hybrid Laminates Based on Simplified Finite Element Model
p.109

HomeKey Engineering MaterialsKey Engineering Materials Vol. 795A more Accurate Constraint Parameter to...

A more Accurate Constraint Parameter to Characterize the Creep Constraint Effect at Crack Tip of Cr-Mo-V Steel

Article Preview

Abstract:

A suitable constraint parameter is a key to quantify the creep crack tip constraint levels. In this study, a new more accurate creep constraint parameter As of brazed joint was proposed based on the existing constraint parameters R* and Ac. The CCG rate equation of Cr-Mo-V steel related to the constraint parameter As is obtained. The results show that the constraint parameter As is basically unchanged with the increase of creep time. The crack growth data predicted by the constraint dependent CCG rate equation are in good agreement with the experimental data. The established constraint dependent CCG rate equation can predict the CCG rate at other constraint levels very well.

You might also be interested in these eBooks

Structural Integrity Assessment

Info:

Periodical:

Key Engineering Materials (Volume 795)

Pages:

79-85

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.795.79

Citation:

Cite this paper

Online since:

March 2019

Authors:

Yun Luo, Qian Zhang, Wen Chun Jiang*

Keywords:

Constraint Parameter, Creep Constraint Effect, Creep Crack Growth, Cr-Mo-V Steel

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2019 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] J.F. Wen, A. Srivastava, A. Benzerga, S.T. Tu, A. Needleman, Creep crack growth by grain boundary cavitation under monotonic and cyclic loading, J. Mech. Phy. Solids 108 (2017) 68-84.

DOI: 10.1016/j.jmps.2017.07.018

[2] Y.C. Zhang, W.C. Jiang, S.T. Tu, X.C. Zhang, Y.J. Ye, Creep crack growth behavior analysis of the 9Cr-1Mo steel by a modified creep-damage model, Mater. Sci. Eng. A 708 (2017) 68-76.

DOI: 10.1016/j.msea.2017.09.112

[3] J.Z. He, G.Z. Wang, S.T. Tu, F.Z. Xuan, Characterization of 3-D creep constraint and creep crack growth rate in test specimens in ASTM-E1457 standard, Eng. Fract. Mech. 168 (2016) 131-146.

DOI: 10.1016/j.engfracmech.2016.10.009

[4] J.Z. He, G.Z. Wang, S.T. Tu, F.Z. Xuan, Effect of constraint on creep crack initiation time in test specimens in ASTM-E1457 standard, Eng. Fract. Mech. 176 (2017) 61-73.

DOI: 10.1016/j.engfracmech.2017.02.021

[5] L.Y. Xu, X.F. Zhang, L. Zhao, Y.D. Han, H.Y. Jing, Quantifying the creep crack-tip constraint effects using a load-independent constraint parameter Q*, Int. J. Mech. Sci. 119 (2016) 320-332.

DOI: 10.1016/j.ijmecsci.2016.11.002

[6] L. Zhao, H.Y. Jing, J.J. Xiu, Y.D. Han, L.Y. Xu, Experimental investigation of specimen size effect on creep crack growth behavior in P92 steel welded joint, Mater. Des. 57(1) (2014) 736-743.

DOI: 10.1016/j.matdes.2013.12.062

[7] P. Budden, R. Ainsworth, The effect of constraint on creep fracture assessments, Int. J. Fract. 97 (1999) 237-247.

[8] Y.J. Chao, X.K. Zhu, L. Zhang, Higher-order asymptotic crack-tip fields in a power-law creeping material, Int. J. Solids Struct. 38 (2001) 3853-3875.

DOI: 10.1016/s0020-7683(00)00255-9

[9] G.Z. Wang, X.L. Liu, F.Z. Xuan, S.T. Tu, Effect of constraint induced by crack depth on creep crack-tip stress field in CT specimens, Int. J. Solids Struct. 47 (2010) 51-57.

DOI: 10.1016/j.ijsolstr.2009.09.015

[10] J. P. Tan, G. Z. Wang, S. T. Tu, F. Z. Xuan, Load-independent creep constraint parameter and its application, Eng. Fract. Mech. 116 (2014) 41-57.

DOI: 10.1016/j.engfracmech.2013.12.015

[11] H.S.Ma, G.Z. Wang, F.Z. Xuan, S.T. Tu, Unified characterization of in-plane and out-of-plane creep constraint based on crack-tip equivalent creep strain, Eng. Fract. Mech. 142 (2015) 1-20.

DOI: 10.1016/j.engfracmech.2015.05.044

[12] J. P. Tan, S. T. Tu, G. Z. Wang, F. Z. Xuan, Effect and mechanism of out-of-plane constraint on creep crack growth behavior of a Cr-Mo-V steel, Eng. Fract. Mech. 99 (2013) 324-334.

DOI: 10.1016/j.engfracmech.2013.01.017

[13] J.F. Wen, S.T. Tu, X.L. Gao, J.N. Reddy, Simulations of creep crack growth in 316 stainless steel using a novel creep-damage model, Eng. Fract. Mech. 98 (2013)169-184.

DOI: 10.1016/j.engfracmech.2012.12.014

[14] M. Yatomi, K.M. Nikbin, N.P. O' Dowd, Creep crack growth prediction using a damage based approach, Int. J. Pres. Ves. Pip. 80 (2003) 573-583.

DOI: 10.1016/s0308-0161(03)00110-8

[15] A.F. Cocks, M.F. Ashby, Intergranular fracture during power-law creep under multiaxial stresses, Metal Sci. 8 (1980) 395-402.

DOI: 10.1179/030634580790441187

[16] H. S. Ma, G. Z. Wang, S. Liu, S. T. Tu, F. Z. Xuan, In-plane and out-of-plane unified constraint-dependent creep crack growth rate of 316H steel, Eng. Fract. Mech. 155 (2016) 88-101.

DOI: 10.1016/j.engfracmech.2016.01.017

[17] S.Liu, G.Z. Wang, S.T. Tu, F.Z. Xuan, Creep crack growth prediction and assessment incorporating constraint effect for pressurized pipes with axial surface cracks, Eng. Fract. Mech. 154 (2016) 92-110.

DOI: 10.1016/j.engfracmech.2016.01.009

[18] J.Z. He, G.Z. Wang, S.T. Tu, F.Z. Xuan, Prediction of creep crack initiation behavior considering constraint effects for cracked pipes, Eng. Fract. Mech. 190 (2018) 213-231.

DOI: 10.1016/j.engfracmech.2017.12.024