In-depth analysis of the fatigue mechanism induced by inclusions for high-strength bearing steels

Abstract

A numerical study of stress distribution and fatigue behavior in terms of the effect of voids adjacent to inclusions was conducted with finite element modeling simulations under different assumptions. Fatigue mechanisms were also analyzed accordingly. The results showed that the effects of inclusions on fatigue life will distinctly decrease if the mechanical properties are close to those of the steel matrix. For the inclusions, which are tightly bonded with the steel matrix, when the Young’s modulus is larger than that of the steel matrix, the stress will concentrate inside the inclusion; otherwise, the stress will concentrate in the steel matrix. If voids exist on the interface between inclusions and the steel matrix, their effects on the fatigue process differ with their positions relative to the inclusions. The void on one side of an inclusion perpendicular to the fatigue loading direction will aggravate the effect of inclusions on fatigue behavior and lead to a sharp stress concentration. The void on the top of inclusion along the fatigue loading direction will accelerate the debonding between the inclusion and steel matrix.

Keywords

inclusion / high-strength bearing steel / fatigue / numerical study / stress distribution

References

[1] Rycerz P, Olver A, Kadiric A. Propagation of surface initiated rolling contact fatigue cracks in bearing steel. Int. J. Fatigue, 2017, 97, 29.

[2] Gu C, Bao YP, Gan P, Wang M, He JS. Effect of main inclusions on crack initiation in bearing steel in the very high cycle fatigue regime. Int. J. Miner. Metall. Mater., 2018, 25(6): 623.

[3] Arakere NK. Gigacycle rolling contact fatigue of bearing steels: A review. Int. J. Fatigue, 2016, 93, 238.

[4] Shiozawa K, Lu L. Very high-cycle fatigue behaviour of shot-peened high-carbon-chromium bearing steel. Fatigue Fract. Eng. Mater. Struct., 2002, 25(8–9): 813.

[5] Bathias C, Paris PC. Gigacycle Fatigue in Mechanical Practice, 2004, Boca Raton, CRC Press

[6] Krupp U, Koschella K, Giertler A. The significance of grain size, segregations and inclusions for the very high cycle fatigue (VHCF) behavior of tempered martensitic steels. Procedia Struct. Integrity, 2019, 23, 517.

[7] Zheng HY, Guo SQ, Qiao MR, Qin LB, Zou XJ, Ren ZM. Study on the modification of inclusions by Ca treatment in GCr18Mo bearing steel. Adv. Manuf., 2019, 7(4): 438.

[8] Ma WJ, Bao YP, Wang M, Zhao DW. Influence of slag composition on bearing steel cleanness. Ironmaking Steelmaking, 2014, 41(1): 26.

[9] W. Xiao, M. Wang, and Y.P. Bao, The research of low-oxygen control and oxygen behavior during RH process in silicondeoxidization bearing steel, Metals, 9(2019), No. 8, art. No. 812.

[10] Xu HF, Yu F, Wang C, Zhang WL, Li J, Cao WQ. Comparison of microstructure and property of high chromium bearing steel with and without nitrogen addition. J. Iron Steel Res. Int., 2017, 24(2): 206.

[11] Xu Y, Wang EG, Li Z, Deng AY. Effects of vertical electromagnetic stirring on grain refinement and macrosegregation control of bearing steel billet in continuous casting. J. Iron Steel Res. Int., 2017, 24(5): 483.

[12] Shahriari B, Vafaei R, Sharifi EM, Farmanesh K. Aging behavior of a copper-bearing high-strength low-carbon steel. Int. J. Miner. Metall. Mater., 2018, 25(4): 429.

[13] Li SX. Effects of inclusions on very high cycle fatigue properties of high strength steels. Int. Mater. Rev., 2012, 57(2): 92.

[14] Pineau A, Forest S. Effects of inclusions on the very high cycle fatigue behaviour of steels. Fatigue Fract. Eng. Mater. Struct., 2017, 40(11): 1694.

[15] Sakai T, Sato Y, Oguma N. Characteristic S−N properties of high — carbon-chromium — bearing steel under axial loading in long — life fatigue. Fatigue Fract. Eng. Mater. Struct., 2002, 25(8–9): 765.

[16] Sakai T, Takeda M, Shiozawa K, Ochi Y, Nakajima M, Nakamura T, Oguma N. Experimental reconfirmation of characteristic S−N property for high carbon chromium bearing steel in wide life region in rotating bending. J. Soc. Mater. Sci. Jpn., 2000, 49(7): 779.

[17] Matsunaga H, Sun C, Hong Y, Murakami Y. Dominant factors for very-high-cycle fatigue of high-strength steels and a new design method for components. Fatigue Fract. Eng. Mater. Struct., 2015, 38(11): 1274.

[18] U. Karr, Y. Sandaiji, R. Tanegashima, S. Murakami, B. Schönbauer, M. Fitzka, and H. Mayer, Inclusion initiated fracture in spring steel under axial and torsion very high cycle fatigue loading at different load ratios, Int. J. Fatigue, 134(2020), art. No. 105525.

[19] Gao GH, Xu QZ, Guo HR, Gui XL, Zhang BX, Bai BZ. Effect of inclusion and microstructure on the very high cycle fatigue behaviors of high strength bainite/martensite multiphase steels. Mater. Sci. Eng. A, 2019, 739, 404.

[20] Spriestersbach D, Grad P, Kerscher E. Influence of different non-metallic inclusion types on the crack initiation in high-strength steels in the VHCF regime. Int. J. Fatigue, 2014, 64, 114.

[21] Dunne FPE, Wilkinson AJ, Allen R. Experimental and computational studies of low cycle fatigue crack nucleation in a polycrystal. Int. J. Plast., 2007, 23(2): 273.

[22] McDowell DL, Dunne FPE. Microstructure-sensitive computational modeling of fatigue crack formation. Int. J. Fatigue, 2010, 32(9): 1521.

[23] Musinski WD, McDowell DL. Simulating the effect of grain boundaries on microstructurally small fatigue crack growth from a focused ion beam notch through a three-dimensional array of grains. Acta Mater., 2016, 112, 20.

[24] Przybyla CP, McDowell DL. Microstructure-sensitive extreme value probabilities for high cycle fatigue of Ni-base superalloy IN100. Int. J. Plast., 2010, 26(3): 372.

[25] Przybyla CP, Musinski WD, Castelluccio GM, McDowell DL. Microstructure-sensitive HCF and VHCF simulations. Int. J. Fatigue, 2013, 57, 9.

[26] Castelluccio GM, McDowell DL. Microstructure-sensitive small fatigue crack growth assessment: Effect of strain ratio, multiaxial strain state, and geometric discontinuities. Int. J. Fatigue, 2016, 82, 521.

[27] Prasannavenkatesan R, Zhang JX, McDowell DL, Olson GB, Jou HJ. 3D modeling of subsurface fatigue crack nucleation potency of primary inclusions in heat treated and shot peened martensitic gear steels. Int. J. Fatigue, 2009, 31(7): 1176.

[28] Gillner K, Henrich M, Münstermann S. Numerical study of inclusion parameters and their influence on fatigue lifetime. Int. J. Fatigue, 2018, 111, 70.

[29] Gillner K, Münstermann S. Numerically predicted high cycle fatigue properties through representative volume elements of the microstructure. Int. J. Fatigue, 2017, 105, 219.

[30] Vajragupta N, Wechsuwanmanee P, Lian J, Sharaf M, Münstermann S, Ma A, Hartmaier A, Bleck W. The modeling scheme to evaluate the influence of microstructure features on microcrack formation of DP-steel: The artificial microstructure model and its application to predict the strain hardening behavior. Comput. Mater. Sci., 2014, 94, 198.

[31] C. Gu, J.H. Lian, Y.P. Bao, Q.G. Xie, and S. Münstermann, Microstructure-based fatigue modelling with residual stresses: Prediction of the fatigue life for various inclusion sizes, Int. J. Fatigue, 129(2019), art. No. 105158.

[32] Gu C, Lian JH, Bao YP, Münstermann S. Microstructure-based fatigue modelling with residual stresses: Prediction of the microcrack initiation around inclusions. Mater. Sci. Eng. A, 2019, 751, 133.

[33] W.Q. Liu, J.H. Lian, N. Aravas, and S. Münstermann, A strategy for synthetic microstructure generation and crystal plasticity parameter calibration of fine-grain-structured dual-phase steel, Int. J. Plast., 126(2020), art. No. 102614.

[34] Xie QG, Lian JH, Sidor JJ, Sun FW, Yan XC, Chen CY, Liu TK, Chen WJ, Yang P, An K, Wang YD. Crystallographic orientation and spatially resolved damage in a dispersion-hardened Al alloy. Acta Mater., 2020, 193, 138.

[35] Gu C, Wang M, Bao YP, Wang FM, Lian JH. Quantitative analysis of inclusion engineering on the fatigue property improvement of bearing steel. Metals, 2019, 9(4): 476.

[36] Xie QG, Lian JH, Sun FW, Gan B, Wang YD. The lattice strain ratio in characterizing the grain-to-grain interaction effect and its specific insight on the plastic deformation of polycrystalline materials. J. Strain Anal. Eng. Des., 2018, 53(5): 353.

[37] Xie Q, Bael AV, An YG, Lian J, Sidor JJ. Effects of the isotropic and anisotropic hardening within each grain on the evolution of the flow stress, the r-value and the deformation texture of tensile tests for AA6016 sheets. Mater. Sci. Eng. A, 2018, 721, 154.

[38] Brooksbank D, Andrews KW. Tessellated stresses associated with some inclusions in steel. J. Iron Steel Inst., 1969, 207, 474

[39] Brooksbank D, Andrews KW. Thermal expansion of some inclusions found in steels and relation to tessellated stresses. J. Iron Steel Inst., 1968, 206, 595