Failure analysis and prevention of quench crack of eccentric holed disk by experimental study and computer simulation

Sugianto, Arif; Narazaki, Michiharu; Kogawara, Minoru; Shirayori, Atsushi

doi:10.1016/j.engfailanal.2008.01.010

Cited by 18 publications

(4 citation statements)

References 5 publications

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“…On the other hand, wetting kinematics has a large effect via non-uniform cooling. Film-boiling is unstable and highly variable, and water does not rewet steel in a uniform manner during still quenching, leading to non-uniform cooling 19 . Pang and Deng 9 found that the wetting angles of magnetized water on the surfaces of hydrophobic materials were decreased from those of fresh water.…”

Section: Quenching Crack Resistancementioning

confidence: 99%

Effect of Magnetically Treated Tap Water Quenchant on Hardenability of S45C Steel

et al. 2022

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The objective of this work was to investigate effects of magnetically treated tap water quenchant on hardenability and quenching crack resistance of S45C steel. The magnetically treated water quenchant was prepared by circulating regular tap water though a 130 mT magnetic field. The S45C steel was austenized at 860°C for 30 minutes. The hardenability in transverse section measurement of S45C steel quenched in magnetically treated tap water did not differ from that prepared with regular tap water quenchant. In measurements of the quenched end, the hardenability of S45C Steel quenched in magnetically treated water was below that with tap water quenchant. On the other hand, quenching crack resistance of S45C steel quenched in magnetically treated tap water was higher than that prepared with regular tap water. Moreover, microstructures of specimens quenched in magnetically treated tap water quenchant were different from that with regular tap water quenchant. Fine martensite structure formed in specimen quenched in regular tap water quenchant, while coarse lath martensite formed in specimens quenched in magnetically treated tap water quenchant.

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Section: Quenching Crack Resistancementioning

confidence: 99%

Effect of Magnetically Treated Tap Water Quenchant on Hardenability of S45C Steel

et al. 2022

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“…On the other hand, simulations have been used in order to model and better understand this phenomenon. Sugianto et al , for example worked on eccentric holed disks of carbon steel AISI 1045 quenched into water and polymer solution, studying the susceptibility to quench‐cracking by comparing the residual stress, predicted through Finite Element (FE) simulations, against the yield strength during the quenching process. Gallina by means of the extended finite element method (XFEM) simulated a quenching induced crack in a forged valve, showing good agreement between experimental and numerical results.…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental investigation of the mesoscale fracture behaviour of quenched steels

Schicchi

Hoffmann

Hunkel

et al. 2016

Fatigue Fract Eng Mat Struct

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During heat treatment processes, especially during quenching, cracks may form because of the presence of high thermal and mechanical stresses and strains. Notwithstanding the fact that increasingly detailed modelling for heat treatment is being performed (considering, i.a., grain size, creep and transformation plasticity), homogeneous microstructures are still normally assumed. Chemical and hence structural inhomogeneities are not commonly explicitly considered, which is especially accentuated in the case of real parts simulation because of the resulting numerical problem's size. Intensive quenching on a cylindrical specimen of 100Cr6 (SAE) steel is proposed here to experimentally investigate the microcrack generation. A finite element based model is proposed to numerically evaluate the fracture behaviour in a two‐step simulation. First, by solving the quenching problem in direct correspondance with the experimental test performed, and second, by studying the mesoscale response taking into account the influence of second phase particles in a representative volume element based approach. The maximum principal stress criterion is used to trigger the fracture by means of the extended finite element method at the mesoscale. The trend to form cracks in the surface region, experimentally observed, has been well captured by the model. The influence of carbides sizes and content on the mesoscale fracture response has been numerically analysed as well. A good agreement has been reached between the simulations and the experimental results, exhibiting the potential of the introduced approach to be used as a failure prediction methodology.

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“…2,3 Generally, residual stress has a negative effect on component quality because it may induce premature failure through stress corrosion or hydrogen cracking, and cause distortion and dimensional variation. 4,5 Therefore, it is important to investigate the parameters that affect the magnitude and distribution of residual stress in order to improve the quality and reliability of manufactured parts.…”

Section: Introductionmentioning

confidence: 99%

FEM simulation and experimental study on the quenching residual stress of aluminum alloy 2024

Zhang

Xiao

Li³

et al. 2013

Proceedings of the Institution of Mechanical Engineers, Part B:

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Finite element models were established to simulate the quenching processes of aluminum alloy 2024 blocks under different quenching conditions. The surface cooling curves of aluminum blocks in different quench media were obtained by experiment. Inverse heat-transfer calculations were applied to determine the heat-transfer coefficient curves. Finite element model was used to predict residual stresses developed after quenching process by quenching aluminum blocks with different thicknesses (20 mm 4 d 470 mm) into two kinds of quenchants (water and polyalkylene glycol solution). The influence of block thickness and quenchant on residual stresses was investigated by both finite element method simulation and experiments. To validate the simulation results, the X-ray diffraction method was used to measure the residual stresses developed in aluminum alloy 2024 blocks after quenching process. The agreement between model and experiment was good. It was concluded that both block thickness and quench media had critical influences on residual stresses. When the thickness of the aluminum block increased from 20 to 50 mm, the residual stress value at the center of the block increased by 100% and the increase of the residual stress became insignificant after 50 mm. In d = 20 and 30 mm cases, polyalkylene glycol quench conditions were proved to cause lower levels of residual stress than water quench conditions.

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Failure analysis and prevention of quench crack of eccentric holed disk by experimental study and computer simulation

Cited by 18 publications

References 5 publications

Effect of Magnetically Treated Tap Water Quenchant on Hardenability of S45C Steel

Effect of Magnetically Treated Tap Water Quenchant on Hardenability of S45C Steel

Numerical and experimental investigation of the mesoscale fracture behaviour of quenched steels

FEM simulation and experimental study on the quenching residual stress of aluminum alloy 2024

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