中子衍射和有限元法研究不锈钢复合板补焊残余应力
收稿日期: 2012-06-08
修回日期: 2012-09-24
网络出版日期: 2012-12-11
基金资助
国家自然科学基金项目51105380, 教育部博士点新教师基金项目20100133120008和山东省自然科学基金项目ZR2010AQ002资助
A STUDY OF RESIDUAL STRESS IN THE REPAIR WELD OF STAINLESS STEEL CLAD PLATE BY NEUTRON DIFFRACTION MEASUREMENT AND FINITE ELEMENT METHOD
Received date: 2012-06-08
Revised date: 2012-09-24
Online published: 2012-12-11
Supported by
Supported by National Natural Science Foundation of China (No.51105380), Doctoral Program of Higher Education of China (No.20100133120008) and Natural Science Foundation of Shandong Province (No.ZR2010AQ002)
蒋文春 Woo Wanchuck 王炳英 涂善东 . 中子衍射和有限元法研究不锈钢复合板补焊残余应力[J]. 金属学报, 2012 , 48(12) : 1525 -1529 . DOI: 10.3724/SP.J.1037.2012.00341
Stainless steel clad plate is widely used in petrochemical engineering because of its high strength and good corrosion resistance, but there are cracks to be always generated in clad metal during the fabrication and service. Welding is often used to repair the cracked zone in stainless steel clad plates, but the residual stress is generated inevitably during welding, which has a great effect on their structure integrity. Chinese code, safety assessment for in–service pressure vessels containing defects, requires through–thickness stress distribution, and assumes that the secondary membrane stress induced by welding is equal to the yield stress, and the bending stress is zero. This work uses a combination of neutron diffraction method and finite element method (FEM) to determine the residual stress in the repair weld of a stainless steel clad plate. It is found that there is a good agreement between FEM and experimental results. The residual stress is concentrated in the heat affected zone (HAZ) of the weld metal, and decreases gradually far away from this zone. Due to the local heating input difference through thickness of the clad plate, a bending stress is generated in it. In the clad metal, the maximum stress is located at HAZ, which has exceeded the yield strength because of work hardening. Therefore, the assessment result based on the code assumption would lead to a big difference from the actual one. The combined use of FEM and neutron diffraction can obtain both the stress values and through–thickness stress distribution, which meet the requirement how to treat the welding residual stress in the structure integrity assessment code.
[1] Jiang W C, Xu X P, Gong J M, Tu S T. Nucl Eng Des, 2012; 246: 211
[2] Brown T B, Dauda T A, Truman C E, Smith D J, Memhard D, Pfeiffer W. Int J Pressure Vessels Piping, 2006; 83: 809
[3] Aloraier A, Al–Mazrouee A, Price J W H, Shehata T. Int J Pressure Vessels Piping, 2010; 87: 127
[4] Dong P, Hong J K, Bouchard P J. Int J Pressure Vessels Piping, 2005; 82: 258
[5] Hou J, Peng Q J, Takeda Y, Kuniya J, Shoji T. Corros Sci, 2010; 52: 3949
[6] Amirat A, Mohamed–Chateauneuf A, Chaoui K. Int J Pressure Vessels Piping, 2006; 83: 107
[7] Mochizuki M. Nucl Eng Des, 2007; 237: 107
[8] Chen H F, Ponter A R S, Ainsworth R A. Int J Pressure Vessels Piping, 2006; 83: 123
[9] Banahan B D. Int J Pressure Vessels Piping, 2008; 85: 191
[10] Pratihar S, Turski M, Edwards L, Bouchard P J. Int J Pressure Vessels Piping, 2009; 86: 13
[11] Stacey A, Barthelemy J Y, Leggatt R H, Ainsworth R A. Eng Fract Mech, 2000; 67: 573
[12] Murugan S, Rai S K, Kumar P V, Jayakumar T, Raj B, Bose M S C. Int J Pressure Vessels Piping, 2001; 78: 307
[13] Joseph A, Rai S K, Jayakumar T, Murugan N. Int J Pressure Vessels Piping, 2005; 82: 700
[14] George R, Mac B, Guowu S. Comput Struct, 2003; 81: 929
[15] Hossain S, Truman C E, Smith D J. Int J Pressure Vessels Piping, 2012; 93–94: 29
[16] Woo W C, Em V, Mikula P, An G B, Seong B S. Mater Sci Eng, 2011; A528: 4120
[17] Woo W C, Em V, Hubbard C R, Lee H J, Park K S. Mater Sci Eng, 2011; A528: 8021
[18] Cho J R, Lee B Y, Moon Y H, Van Tyne C J. J Mater Process Technol, 2004; 155–156: 1690
[19] Jiang W C, Chen H, Gong J M, Tu S T. Mater Sci Eng, 2011; A528: 4715
[20] Jiang W C, Zhang Y C, Woo W C. Int J Pressure Vessels Piping, 2012; 92: 56
[21] Sattari–Far I, Farahani M R. Int J Pressure Vessels Piping, 2009; 86: 723
[22] Deng D A, Kiyoshima S. Acta Metall Sin, 2010; 46: 195
(邓德安, 清岛祥一. 金属学报, 2010; 46: 195)
[23] Jiang W C, Wang B Y, Gong J M, Tu S T. Mater Des, 2011; 32: 2851
[24] Jiang W C, Gong J M, Tu S T, Li G C. Int J Pressure Vessels Piping, 2010; 87: 457
[25] Jiang W C, Yang B, Gong J M, Tu S T. Int J Pressure Vessels Piping, 2011; 133: 1
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