Joule heating-induced microstructure evolution and residual stress in Ti-6Al-4V for U-shaped screw

AbstractIn this paper, the effects of high current pulsed electron beam (HCPEB) on the microstructure evolution of casting HPb59-1 (Cu 57.1 mass%, Pb 1.7 mass% and Zn balance) alloy were investigated. The results showed a “wavy” surface which was formed with Pb element existing in the forms of stacking block and microparticles on the top surface layer after treatment. Nanocrystalline structures including Pb grains and two phases (α and β) were formed on the top remelted layer and their sizes were all less than 100 nm. The disordered β phase was generated in the surface layer after HCPEB treatment, which is beneficial for the improvement of surface properties. Meanwhile, there was a large residual stress on the alloy surface, along with the appearance of microcracks, and the preferred orientations of grains also changed.

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Residual Stress Distribution and Microstructure Evolution of AA 6061-T6 Treated by Warm Laser Peening

Metals ◽

10.3390/met6110292 ◽

2016 ◽

Vol 6 (11) ◽

pp. 292 ◽

Cited By ~ 5

Author(s):

Shu Huang ◽

Zuowei Wang ◽

Jie Sheng ◽

Emmanuel Agyenim-Boateng ◽

Muxi Liu ◽

...

Keyword(s):

Residual Stress ◽

Stress Distribution ◽

Microstructure Evolution ◽

Residual Stress Distribution ◽

Laser Peening

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Residual stress modeling considering microstructure evolution in metal additive manufacturing

Journal of Manufacturing Processes ◽

10.1016/j.jmapro.2021.04.041 ◽

2021 ◽

Vol 68 ◽

pp. 383-397

Author(s):

Elham Mirkoohi ◽

Dongsheng Li ◽

Hamid Garmestani ◽

Steven Y. Liang

Keyword(s):

Residual Stress ◽

Additive Manufacturing ◽

Microstructure Evolution ◽

Metal Additive Manufacturing ◽

Stress Modeling ◽

Residual Stress Modeling ◽

Metal Additive

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Effect of residual stress and microstructure evolution on size stability of M50 bearing steel

Journal of Materials Research and Technology ◽

10.1016/j.jmrt.2020.12.060 ◽

2021 ◽

Vol 10 ◽

pp. 651-661

Author(s):

Y.H. Wei ◽

X.F. Yu ◽

Y. Su ◽

X.Y. Shen ◽

Y.Z. Xia ◽

...

Keyword(s):

Residual Stress ◽

Microstructure Evolution ◽

Bearing Steel ◽

Size Stability

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Microstructure evolution and residual stress changes of the GH4169 alloy by wet shot peening

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/563/2/022040 ◽

2019 ◽

Vol 563 ◽

pp. 022040

Author(s):

P F Zhou ◽

H Z Zheng ◽

S H Guo ◽

S P Cheng ◽

G F Li

Keyword(s):

Residual Stress ◽

Microstructure Evolution ◽

Shot Peening ◽

Stress Changes ◽

Gh4169 Alloy

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Residual stress prediction for turning of Ti-6Al-4V considering the microstructure evolution

Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture ◽

10.1177/0954405417712551 ◽

2017 ◽

Vol 233 (1) ◽

pp. 109-117 ◽

Cited By ~ 10

Author(s):

Zhipeng Pan ◽

Donald S Shih ◽

Hamid Garmestani ◽

Steven Y Liang

Keyword(s):

Residual Stress ◽

Microstructure Evolution ◽

Thermal Stresses ◽

Rake Angle ◽

Machining Process ◽

Stress Generation ◽

Depth Of Cut ◽

Stress Profile ◽

Residual Stress Profile ◽

Stress Prediction

An analytical model for residual stress prediction considering the effects of material dynamic recrystallization under process-induced mechanical and thermal stresses is proposed. The effect of microstructure evolution on residual stress generation during the turning process is considered. The Johnson–Mehl–Avrami–Kolmogorov model is used to calculate grain size evolution due to thermal mechanical effects in the machining process. A modified Johnson–Cook flow stress model is developed by introducing a material grain growth–induced softening term. The classic Oxley’s cutting mechanics theories are implemented for machining forces calculation. A hybrid algorithm accounting for thermal, mechanical, and microstructure evolution effects is used to predict the residual stress profile on a machined workpiece surface. The proposed method is implemented for the orthogonal turning of Ti-6Al-4V material. Comparison is conducted between the model prediction and the literature measurement residual stress data. The general trend of the machining-induced residual stress on the machining surface is accurately captured by the proposed model. Also, the parametric study is conducted to investigate the effect of rake angle and depth of cut on the residual stress profile.

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