Numerical simulation of thermal fatigue behavior in a cracked disc of AISI H-11 tool steel

Qayyum, Faisal; Shah, Masood; Shakeel, Osama; Mukhtar, Fariha; Salem, Mehdi; Rézaï-Aria, Farhad

doi:10.1016/j.engfailanal.2016.01.015

Cited by 32 publications

(16 citation statements)

References 48 publications

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“…Therefore, each element of the specimen undergoes cyclic strains and associated stresses resulting from the thermal transients. The external surface of the steel is thus subjected to a thermomechanical stress-strain hysteresis loop, and goes into compression during attempted expansion (heating phase) and into tension during attempted contraction (cooling phase) [36,37]. Since the oxide or intermetallic layer is strongly bonded to the substrate, it undergoes the same thermo-mechanical loadings imposed to the steel surface.…”

Section: Discussionmentioning

confidence: 99%

“…Whether or not the specimen is coated, the damage usually initiates first in the superficial layer (composed of the intermetallic layer and/or the steel surface). After a critical number of cycles (depending on the amplitude and rate of the thermal cycle and environmental conditions), cracks initiate and propagate under mode I along the circumferential "θθ" axis [36].…”

Section: Discussionmentioning

confidence: 99%

“…Nevertheless, it was clearly demonstrated that both the crack arrest and the total number of macrocracks propagating in the specimen depended on the test conditions. Thermo-mechanical simulations showed that by increasing inward crack length, the J-integral drops (a > 2 mm) because of the attenuation of thermal gradients and thermal stresses in depth [9,36]. This explains the S-shape of the TF crack propagation curves.…”

Section: Effect Of the Heat-checking Network And Oxidation On The Tf mentioning

confidence: 99%

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Effect of aluminizing and oxidation on the thermal fatigue damage of hot work tool steels for high pressure die casting applications

Salem

Roux

Dour

et al. 2019

International Journal of Fatigue

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et al.. Effect of aluminizing and oxidation on the thermal fatigue damage of hot work tool steels for high pressure die casting applications. A B S T R A C TThe interaction between thermal fatigue and aluminizing and/or oxidation is investigated using an experimental approach based on decoupling of mechanisms. Virgin and pre-aluminized steel specimens are tested in air and nitrogen between 100 and 650°C. Homogeneous uniaxial micro-crack network forms on the oxidised or prealuminized surface in air, with a better resistance to micro-cracking for the intermetallic coating. The propagation of the micro-cracks is delayed in nitrogen, whilst no evidence of micro-cracking is observed on the virgin specimen. The premature cracking of the steel depends on the formation of the superficial micro-crack network, and the crack propagation is assisted by oxidation.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Effect Of the Heat-checking Network And Oxidation On The Tf mentioning

confidence: 99%

See 1 more Smart Citation

Effect of aluminizing and oxidation on the thermal fatigue damage of hot work tool steels for high pressure die casting applications

Salem

Roux

Dour

et al. 2019

International Journal of Fatigue

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“…This kind of development is not aligned with modern industrial engineering practices, which is to assist development by computer simulation software for the theoretical prediction of properties expected to results from a given transducer design. Recently finite element analysis (FEA) has become vital tool for researchers for the analysis of mechanical components as well as piezoelectric sensors and actuators [16][17][18]. As we know, the properties of piezoelectric materials are very important to the design of MEMS sensors and actuators.…”

Section: Historical Backgroundmentioning

confidence: 99%

Investigation of Electrical Properties & Mechanical Quality Factor of Piezoelectric Material (PZT-4A)

Butt¹,

Anjum²,

Sultan³

et al. 2017

Journal of Electrical Engineering and Technology

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-Piezoelectricity is the capability of a piezoelectric material to change mechanical energy into electrical energy. The determination of electrical and mechanical properties plays a significant role in characterizing the piezoelectric material. The energy losses characteristics of piezoelectric material can be described by mechanical quality factor. In this paper, the output voltage and mechanical quality factor of Lead Zirconate Titanate (PZT-4A) piezoelectric material is determined under various resistance and loading conditions by using the test setup. The commercial FEM software ABAQUS is used to analyze the performance of piezoelectric material under static loading conditions. It is observed that these properties affect the performance of a material particularly in the designing of smart structures. The experimental results are partially compared to the simulation values.

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“…It was investigated that, the presence of MnS inclusions and deformation-induced martensite affected the pitting corrosion resistance causes the failure of pointer rod. Qayyum et al [10] carried out numerical simulation of cracked disc of AISI H-11 tool steel, results showed significant drop in hoop stress with increase in number of cracks, thus limiting the number of cracks possible in a thermal fatigue crack network. Tsai et al [11] studied the phase transformation phenomenon in AISI 410 steels that will hepled in detrmining the causes of failure.…”

Section: Introductionmentioning

confidence: 99%

Failure investigations of failed valve plug SS410 steel due to cracking

Калыанкар

Deshmukh

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Premature and sudden in service failure of a valve plug due to crack formation, applied in power plant has been investigated. The plug was tempered and heat treated, the crack was originated at centre, developed along the axis and propagates radially towards outer surface of plug. The expected life of the component is 10-15 years while, the component had failed just after the installation that is, within 3 months of its service. No corrosion products were observed on the crack interface and on the failed surface; hence, causes of corrosion failure are neglected. This plug of level separator control valve, is welded to the stem by means of plasma-transferred arc welding and as there is no crack observed at the welding zone, the failure due to welding residual stresses are also neglected. The failed component discloses exposed surface of a crack interface that originated from centre and propagates radially. The micro-structural observation, hardness testing, and visual observation are carried out of the specimen prepared from the failed section and base portion. The microstructure from the cracked interface showed severe carbide formation along the grain boundaries. From the microstructural analysis of the failed sample, it is observed that there is a formation of acicular carbides along the grain boundaries due to improper tempering heat treatment.

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Numerical simulation of thermal fatigue behavior in a cracked disc of AISI H-11 tool steel

Cited by 32 publications

References 48 publications

Effect of aluminizing and oxidation on the thermal fatigue damage of hot work tool steels for high pressure die casting applications

Effect of aluminizing and oxidation on the thermal fatigue damage of hot work tool steels for high pressure die casting applications

Investigation of Electrical Properties & Mechanical Quality Factor of Piezoelectric Material (PZT-4A)

Failure investigations of failed valve plug SS410 steel due to cracking

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