Residual-stress relaxation mechanism and model description of 5052H32 Al alloy spun ellipsoidal heads during annealing treatment

Abstract

Marginal-restraint mandrel-free spinning is an advanced technology for manufacturing ellipsoidal heads with large diameter-thickness ratios. Nevertheless, the spinning-induced residual stress, which greatly influences the in-service performance of spun heads, should be removed. In this study, the effects of annealing on the residual-stress relaxation behavior of 5052H32 aluminum alloy spun heads were investigated. It is found that the residual stress first rapidly decreases and then remains steady with the increase in annealing time at the tested annealing temperatures. The relaxation of the residual stress becomes increasingly obvious with the increase in annealing temperature. When the annealing temperature is less than 220 °C, there are no obvious changes in grain size. Moreover, the spinning-induced dislocations are consumed by the static recovery behavior, which decreases the residual stress during annealing. When the annealing temperature is approximately 300 °C, the broken grains transform into equiaxed grains. In addition, static recrystallization and recovery behaviors occur simultaneously to promote the relaxation of the residual stress. Considering the different stress relaxation mechanisms, a model based on the Zener-Wert-Avrami equation was established to predict the residual-stress relaxation behavior. Finally, the optimized annealing temperature and time were approximately 300 °C and 30 min, respectively.

Keywords

Spinning / Residual stress / Annealing treatment / Microstructure evolution / Relaxation mechanism

References

[1] Xia QX, Xiao GF, Long H, et al. A review of process advancement of novel metal spinning. Int J Mach Tools Manuf, 2014, 85: 100-121.

[2] Xia QX, Xie SW, Huo YL, et al. Numerical simulation and experimental research on the multi-pass neck-spinning of non-axisymmetric offset tube. J Mater Process Technol, 2008, 206: 500-508.

[3] Zhan M, Zhang T, Yang H, et al. Establishment of a thermal damage model for Ti-6Al-2Zr-1Mo-1V titanium alloy and its application in the tube rolling-spinning process. Int J Adv Manuf Technol, 2016, 87: 1345-1357.

[4] Music O, Allwood JM, Kawai K. A review of the mechanics of metal spinning. J Mater Process Technol, 2010, 210: 3-23.

[5] Wu HX, Xu WC, Shan DB, et al. An extended GTN model for low stress triaxiality and application in spinning forming. J Mater Process Technol, 2019, 263: 112-128.

[6] Xu WC, Zhao XK, Shan DB, et al. Numerical simulation and experimental study on multi-pass staggered spinning of internally toothed gear using plate blank. J Mater Process Technol, 2016, 229: 450-466.

[7] Wang XK, Xia QX, Cheng XQ. Deformation behavior of haynes230 superalloy during backward flow forming. Int J Precis Eng Manuf, 2017, 18: 77-83.

[8] Zhang HR, Zhan M, Guo J, et al. Forming the transverse inner rib of a curved generatrix part through power spinning. Adv Manuf, 2019, 7: 105-115.

[9] Yuan S, Xia QX, Long JC, et al. Study of the microstructures and mechanical properties of ZK61 magnesium alloy cylindrical parts with inner ribs formed by hot power spinning. Int J Adv Manuf Technol, 2020, 111: 851-860.

[10] Xia QX, Long JC, Zhu NY, et al. Research on the microstructure evolution of Ni-based superalloy cylindrical parts during hot power spinning. Adv Manuf, 2019, 7(1): 52-63.

[11] Lin YC, Qian SS, Chen XM, et al. Staggered spinning of thin-walled Hastelloy C-276 cylindrical parts: numerical simulation and experimental investigation. Thin Wall Struct, 2019, 140: 466-476.

[12] Sun W, You FH, Kong FT, et al. Effect of residual stresses on the mechanical properties of Ti-TiAl laminate composites fabricated by hot-pack rolling. Mater Charact, 2020, 166: 110394.

[13] Lin YC, Wu Q, He DG, et al. Effects of solution time and cooling rate on microstructures and mechanical properties of 2219 Al alloy for a larger spun thin-wall ellipsoidal head. J Mater Res Technol, 2020, 9(3): 3566-3577.

[14] James M. Residual stress influences on structural reliability. Eng Fail Anal, 2011, 18: 1909-1920.

[15] Song X, Fong KS, Oon SR, et al. Diametrical growth in the forward flow forming process: simulation, validation, and prediction. Int J Adv Manuf Technol, 2014, 71: 207-217.

[16] Zoghi H, Arezoodar AF, Sayeaftabi M. Effect of feed and roller contact start point on strain and residual stress distribution in dome forming of steel tube by spinning at an elevated temperature. Proc IMechE Part B: J Eng Manuf, 2012, 226: 1880-1890.

[17] Hu ZF, Wang CX. Effect of tube spinning with subsequent heat-treatment on performance and microstructure evolution of T250 maraging steel. J Iron Steel Res Int, 2012, 19(5): 63-68.

[18] Chang SC, Wang CC, Huang C, et al. Fabrication of 2024 aluminum spun tube using a thermomechanical treatment process. J Mater Process Technol, 2001, 108: 294-299.

[19] Hui J, Feng ZX, Fan WX, et al. The influence of power spinning and annealing temperature on microstructures and properties of Cu-Sn alloy. Mater Charact, 2018, 144: 611-620.

[20] Tsivoulas D, Quinta DA, Fonseca J, et al. Effects of flow forming parameters on the development of residual stresses in Cr-Mo-V steel tubes. Mater Sci Eng A, 2015, 624: 193-202.

[21] Yu ZQ, Zhao YX, Du CY, et al. Study on flange-constrained spinning process for hemispherical aluminum alloy part. J Mater Process Technol, 2020, 278: 116515.

[22] Lin YC, Qian SS, Chen XM, et al. Influences of feed rate and wall thickness reduction on the microstructures of thin-walled Hastelloy C-276 cylindrical parts during staggered spinning. Int J Adv Manufact Technol, 2020, 106: 3809-3821.

[23] Zhou Z, Gill A, Telang A, et al. Experimental and finite element simulation study of thermal relaxation of residual stresses in laser shock peened IN718 SPF superalloy. Exp Mech, 2014, 54: 1597-1611.

[24] Ren XD, Zhou WF, Xu SD, et al. Iron GH2036 alloy residual stress thermal relaxation behavior in laser shock processing. Opt Laser Technol., 2015, 74: 29-35.

[25] Wang Z, Chen YH, Jiang CH. Thermal relaxation behavior of residual stress in laser hardened 17-4PH steel after shot peening treatment. Appl Surf Sci, 2011, 257(23): 9830-9835.

[26] Xie XF, Jiang WC, Luo Y, et al. A model to predict the relaxation of weld residual stress by cyclic load: Experimental and finite element modeling. Int J Fatigue, 2017, 95: 293-301.

[27] Sembiring J, Amanov A, Pyun YS. Artificial neural network-based prediction model of residual stress and hardness of nickel-based alloys for UNSM parameters optimization. Mater Today Commun, 2020, 25: 101391.

[28] Jagtap P, Chason E. A unified kinetic model for stress relaxation and recovery during and after growth interruptions in polycrystalline thin films. Acta Mater, 2020, 193: 202-209.

[29] Juijerm P, Altenberger I. Residual stress relaxation of deep-rolled Al-Mg-Si-Cu alloy during cyclic loading at elevated temperatures. Scripta Mater, 2006, 55: 1111-1114.

[30] Robinson JS, Pirling T, Truman CE, et al. Residual stress relief in the aluminium alloy 7075. Mater Sci Technol, 2017, 33(15): 1765-1775.

[31] Wang JT, Zhang YK, Chen JF, et al. Effect of laser shock peening on the high-temperature fatigue performance of 7075 aluminum alloy. Mater Sci Eng A, 2017, 704: 459-468.

[32] Chen M, Liu H, Wang L, et al. Investigation on the thermostability of residual stress and microstructure in shot peened SAF 2507 duplex stainless steel. Vacuum, 2018, 153: 145-153.

[33] Madariaga A, Aperribay J, Arrazola PJ, et al. Effect of thermal annealing on machining-induced residual stresses in Inconel 718. J Mater Eng Perform, 2017, 26(8): 3728-3738.

[34] Lin YC, Chen JY, He DG, et al. Marginal-restraint mandrel-free spinning process for thin-walled ellipsoidal heads. Adv Manuf, 2020, 8: 189-203.

[35] Chen JY, Lin YC, Pang GD, et al. Effects of spinning parameters on microstructures of ellipsoidal heads during marginal-restraint mandrel-free spinning. Adv Manuf, 2020, 8: 457-472.

[36] Chen MS, Wang GQ, Li HB, et al. Annealing treatment methods and mechanisms for refining mixed and coarse grains in a solution treatment nickel-based superalloy. Adv Eng Mater, 2019, 21: 1900558.

[37] Chen XM, Lin YC, Wu F. EBSD study of grain growth behavior and annealing twin evolution after full recrystallization in a nickel-based superalloy. J Alloys Compd, 2017, 724: 198-207.

[38] Birosca S, Liu G, Ding R, et al. The dislocation behaviour and GND development in a nickel based superalloy during creep. Int J. Plasticity., 2019, 118: 252-268.

Funding

National Natural Science Foundation Council of China(51775564)

Science and Technology Talent Promotion Project of Hunan Province(2020TJ-Q05)

Fundamental Research Funds for the Central Universities of Central South University(2020zzts495)