MICRO-MACRO DAMAGE SIMULATION OF LOW-ALLOY STEEL WELDS SUBJECT TO TYPE IV CREEP FAILURE

Abstract

Abstract: A simulation method for microscopic creep damage at grain boundaries in the finegrain heat-affected zone of low-alloy steel welds involving high energy piping was proposed on the basis of the combination of elastic-creep FEM (finite element method) analysis and random fracture resistance modeling of the materials. The procedure to determine the initiation and growth-driving forces of small defects were briefly described. Then, a simulation procedure combining the stress distribution from elasticcreep FEM and the random fracture resistance model was proposed, and this procedure was applied to the simulation of the microscopic damage progress in a welded joint model test and in actual power piping. The results in terms of the simulated number density of small defects throughout the wall thickness were in good agreement with the observed results.

Key words: type IV, creep damage, welding

T.Igari. MICRO-MACRO DAMAGE SIMULATION OF LOW-ALLOY STEEL WELDS SUBJECT TO TYPE IV CREEP FAILURE[J]. Acta Metallurgica Sinica (English Letters), 2004, 17(4): 393-399 .

References

1 F.V. Ellis and R. Viswanathan, in Fitness-for-Service Evaluations in Petroleum and Fossil Power Plants (ASME-PVP 380) , Proc. of the 1998 ASME/JSME Joint Pressure Vessels and Piping Conference, eds. M. Zako and M. Prager (ASME, NY, 1998) p.59．
2 M. Yamauchi, T. Tokiyoshi, Y. Chuman, N. Nishimura and T. Iwamoto, Proc. of Advances in Life Assessment and Optimization of Fossil Power Plants (EPRI Report No.1006965) , eds. D. Rosario and C. Wells (EPRI, CA, March 11-13, 2002) .
3 T.H. Hyde, W. Sun and J.A. Williams, J. Strain Analysis 38(1) (2003) 1．
4 G.A. Webster and R.A. Ainsworth, High Temperature Component Life Assessment (Chapman & Hall, London, 1994) p.100．
5 M. Yatomi, K.M. Nikbin and N.P. O'Dowd, J. Press. Vessels and Piping 80 (2003) 573．
6 P. Segle, P. Andersson and L.A. Samuelson, Fatigue Fract. Engng. Mater. Struct. 23 (2000) 521．
7 S.T. Tu, Proc. 4th Japan-China Bilateral Symposium on High Temperature Strength of Materials , eds. M. Sakane and S.T. Tu (The Soc. of Materials Science, Tsukuba, Japan, June 11-13, 2001) p.111．
8 J.R. Rice, Acta Metall. 29(4) (1981) 675．
9 N. Nishimura, K. Iwamoto, M. Yamauchi, F. Masuyama, T. Imamoto and T. Yokoyama, Proc. of 4th Int. Conf. On Reliability, Maintainability and Safety, ed. Chinese Mechanical Engineering Society (China Marine Press, May 18-21, 1999) p.347．
10 N. Tada and R. Ohtani, Proc. of IUTAM Symposium on Creep in Structures , eds. S. Murakami and N. Ohno (Kluwer Academic Publishers, Dordorecht, 2001) p.75．
11 F. Kawashima, T. Tokiyoshi, T. Igari, A. Shiibashi and N. Tada, J. Soc. of Mater. Sci. 52(6) (2003) 631 (in Japanese).
12 M. Sakane and T. Hosokawa, Proc. of the IUTAM Symposium on Creep in Structures, eds. S. Murakami and N. Ohno (Kluwer Academic Publishers, Dordorecht, 2001) p.411．
13 D. Watanabe, Y. Chuman, N. Nishimura, H. Matsumoto, K. Tominaga and T. Kuroishi, Proc. of the Fifth Japan Conference on Structural Safety and Reliability, ed. T. Sakai (JCOSSAR, Tokyo, 2003) p.277 (in Japanese).

[1]	Quan Wen, Wenya Li, Vivek Patel, Luciano Bergmann, Benjamin Klusemann, Jorge F. dos Santos. Assessing the Bonding Interface Characteristics and Mechanical Properties of Bobbin Tool Friction Stir Welded Dissimilar Aluminum Alloy Joints [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(1): 125-134.
[2]	Tianbo Zhao, Yutaka S. Sato, Hiroyuki Kokawa, Kazuhiro Ito. Predicting Tensile Properties of Friction-Stir-Welded 6063 Aluminum with Experimentally Measured Welding Heat Input [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(9): 1235-1242.
[3]	Xiaochao Liu, Yufeng Sun, Tomoya Nagira, Kohsaku Ushioda, Hidetoshi Fujii. Effect of Stacking Fault Energy on the Grain Structure Evolution of FCC Metals During Friction Stir Welding [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(7): 1001-1012.
[4]	Jinyong Gao, Lijun Yang, Lei Cui, Peng Lu, Jun Yang, Yanjun Gao. Improving the Weld Formation and Mechanical Properties of the AA-5A06 Friction Pull Plug Welds by Axial Force Control [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(6): 828-838.
[5]	Guang-Da Sun, Li Zhou, Ren-Xiao Zhang, Ling-Yun Luo, Hao Xu, Hong-Yun Zhao, Ning Guo, Di Zhang. Effect of Sleeve Plunge Depth on Interface/Mechanical Characteristics in Refill Friction Stir Spot Welded Joint [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(4): 551-560.
[6]	Nan Xu, Ruo-Nan Feng, Wen-Feng Guo, Qi-Ning Song, Ye-Feng Bao. Effect of Zener-Hollomon Parameter on Microstructure and Mechanical Properties of Copper Subjected to Friction Stir Welding [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(2): 319-326.
[7]	Jun-Lei Zhang, Han Liu, Yu-Lu Xie, Guang-Sheng Huang, Xiang Chen, Bin Jiang, Ai-Tao Tang, Fu-Sheng Pan. Microstructure Distribution and Tensile Anisotropy of Dissimilar Friction Stir Welded AM60 and AZ31 Magnesium Alloys [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(11): 1487-1504.
[8]	Hongduo Wang, Kuaishe Wang, Wen Wang, Yongxin Lu, Pai Peng, Peng Han, Ke Qiao, Zhihao Liu, Lei Wang. Microstructure and Mechanical Properties of Low-Carbon Q235 Steel Welded Using Friction Stir Welding [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(11): 1556-1570.
[9]	Dan Chen, Jinglong Li, Huaxia Zhao, Zhejun Tan, Jiangtao Xiong. Effect of Submillimeter Variation in Plunge Depth on Microstructure and Mechanical Properties of FSLW 2A12 Aluminum Alloy Joints [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(1): 165-171.
[10]	Hua Zhang, Chang-Yu Zhao, Qi-Long Guo, Rui-Sheng Yang, Li-Yuan Liu, San-Bao Lin. Microstructure and Corrosion Behavior of Friction Stir Welded Al Alloy Coated by In Situ Shot-Peening-Assisted Cold Spray [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(1): 172-182.
[11]	Gaoqiang Chen, Shuai Zhang, Yucan Zhu, Chengle Yang, Qingyu Shi. Thermo-mechanical Analysis of Friction Stir Welding: A Review on Recent Advances [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(1): 3-12.
[12]	Xiao-Song Feng, Song-Bin Li, Li-Na Tang, Hui-Min Wang. Refill Friction Stir Spot Welding of Similar and Dissimilar Alloys: A Review [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(1): 30-42.
[13]	Z. W. Wang, G. M. Xie, D. Wang, H. Zhang, D. R. Ni, P. Xue, B. L. Xiao, Z. Y. Ma. Microstructural Evolution and Mechanical Behavior of Friction-Stir-Welded DP1180 Advanced Ultrahigh Strength Steel [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(1): 58-66.
[14]	Y. Z. Li, Y. N. Zan, Q. Z. Wang, B. L. Xiao, Z. Y. Ma. High-Speed Friction Stir Welding of T6-Treated B₄Cp/6061Al Composite [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(1): 67-74.
[15]	Zhao Zhang, Zhi-Jun Tan, Jian-Yu Li, Yu-Fei Zu, Jian-Jun Sha. Integrated Modeling of Process-Microstructure-Property Relations in Friction Stir Additive Manufacturing [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(1): 75-87.