A plastic strain energy method exploration between machined surface integrity evolution and torsion fatigue behaviour of low alloy steel

Wang, Yong; Wang, Xibin; Liu, Zhibing; Liu, Shuyao; Wang, Sitao; Chen, Hongtao; Song, Ci; Bai, Yifan; Wang, Pai; Liu, Yang

doi:10.1016/j.cja.2021.11.003

Cited by 9 publications

(4 citation statements)

References 29 publications

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“…This phenomenon is also illustrated by the clear periodic knife marks in the y direction in Figure 3C. The autocorrelation length of the grinding surface in two directions has little difference, which is related to the fact that the surface is composed of lots of numerous minor scratches between grits and the workpiece 30 . Surface roughness is the most commonly used statistic to characterize surface morphology, and the autocorrelation length ratio can greatly distinguish between turning and grinding surfaces 31–34 .…”

Section: Experimentationmentioning

confidence: 80%

“…The autocorrelation length of the grinding surface in two directions has little difference, which is related to the fact that the surface is composed of lots of numerous minor scratches between grits and the workpiece. 30 Surface roughness is the most commonly used statistic to characterize surface morphology, and the autocorrelation length ratio can greatly distinguish between turning and grinding surfaces. [31][32][33][34] So these two statistics measured from the processed surface are used to generate feature surfaces, which can largely characterize the original surface.…”

Section: Grain Orientationmentioning

confidence: 99%

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A crystal plastic finite element model for the effect of surface integrity on multiaxial fatigue life after multistage machining processes

Liang,

Jiao,

Yan

et al. 2024

Fatigue Fract Eng Mat Struct

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Surface integrity influences the material fatigue performance significantly, but most micromechanical models based on crystal plasticity only consider the microstructure of the matrix. In this paper, a crystal plastic finite element modeling method was proposed, which simultaneously considered surface roughness, residual stress, and gradual microstructure. It was verified through multiaxial fatigue experiments of materials processed by different multistage machining processes. The results show that larger axial residual compressive stress and smaller grain size can lead to higher multiaxial fatigue life. The existence of residual compressive stress causes the location of material crack initiation to decrease from the surface layer to the subsurface layer. The proposed model can predict the multiaxial fatigue life of materials within a 50% error band.

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Section: Experimentationmentioning

confidence: 80%

Section: Grain Orientationmentioning

confidence: 99%

A crystal plastic finite element model for the effect of surface integrity on multiaxial fatigue life after multistage machining processes

Liang,

Jiao,

Yan

et al. 2024

Fatigue Fract Eng Mat Struct

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“…The plastic strain energy density (PSED)

normalΔ W_{cyc}^{p}

can be obtained by Equation (7). 47

normalΔ W_{cyc}^{p} goodbreak= 2 \int_{0}^{Δε} σ normald ε goodbreak- normalΔ σ normalΔ ε .

…”

Section: Simulation Methodsmentioning

confidence: 99%

Cyclic stress–strain response and crystal plasticity finite element analysis of AISI 9310 steel in biaxial fatigue loading

Liang

Pei

et al. 2022

Fatigue Fract Eng Mat Struct

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There are still many gaps in the research on the multiaxial fatigue failure mechanism of the gear shaft. In this paper, cyclic stress–strain response and biaxial fatigue damage characteristics of gear steel AISI 9310 were investigated. The specimens showed obvious cyclic softening characteristics at all phase angles, and the softening rate was directly associated with the initiation and propagation of cracks. The fractographies at different phase angles revealed that the specimens under out‐of‐phase loading suffered fatigue failure caused by a single crack source on the surface, while the fatigue crack under in‐phase loading was gathered together by the propagation of different crack sources. Finally, the established crystal plastic finite element model showed a good prediction of the plastic strain energy density at different phase angles, and the maximum error was 13.03%. Furthermore, a biaxial fatigue life prediction method was proposed, with a maximum error of 39.5%.

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“…Ultra-high-strength steel has excellent mechanical properties, and it has always been used as key high-load structural parts in the transmission systems of vehicles, ships, and aviation [1,2]. As these parts are subjected to a high load and harsh service environment, fatigue cracks usually originate from the surface, which seriously restricts the performance of service.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Cutting Fluid on Machined Surface Integrity of Ultra-High-Strength Steel 45CrNiMoVA

Wang

Ren²,

Pei

et al. 2023

Materials

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The surface integrity of ultra-high-strength steel has a significant influence on service performance, and cutting fluid plays an important role in maintaining surface integrity in production. In this paper, the surface integrity of ultra-high-strength steel 45CrNiMoVA was investigated under three cutting fluids: HY-103 (micro-emulsion), TRIM E709 (emulsion), and Vasco 7000 (micro-emulsion) from the aspects of cutting force, surface morphology, residual stress, micro hardness, microstructure, etc. The results showed that the changing trend of the cutting forces in three directions is HY-103 > Vasco 7000 > TRIM E709. The TRIM E709 contains the maximum lubricants, which reduce cutting force and Sa roughness, while the Vasco 7000 contains the minimum corrosive elements, which results in the least pitting. Both tangential and axial stresses under cutting fluid are tensile stresses. TRIM E709 and Vasco 7000 are reduced axially by 4.45% and 7.60% relative to HY-103, respectively. The grain refinement layer depths of HY-103, TRIM E709, and Vasco 7000 are 9 μm, 4 μm, and 8 μm, respectively, and TRIM E709 can induce recrystallized grains to grow along {001} of the sample cross section, which results from the lowest cooling rate. This work may provide an innovative control strategy for cutting fluid to improve surface integrity and service performance.

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A plastic strain energy method exploration between machined surface integrity evolution and torsion fatigue behaviour of low alloy steel

Cited by 9 publications

References 29 publications

A crystal plastic finite element model for the effect of surface integrity on multiaxial fatigue life after multistage machining processes

A crystal plastic finite element model for the effect of surface integrity on multiaxial fatigue life after multistage machining processes

Cyclic stress–strain response and crystal plasticity finite element analysis of AISI 9310 steel in biaxial fatigue loading

The Effect of Cutting Fluid on Machined Surface Integrity of Ultra-High-Strength Steel 45CrNiMoVA

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