Effect of high strain rates and different orientations on tensile behavior and microcosmic evolution of Ti-6Al-4V sheet

Zhou, Bin; Pan, Yongzhi; Shi, Qihang; Fu, Xiuli

doi:10.1088/2053-1591/ab2a60

Cited by 5 publications

(2 citation statements)

References 18 publications

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“…The mechanical behavior observed should be interpreted to be representative of the loading orientation investigated for the microstructures shown in Figures 4-6. It is well established that other loading orientations, [27][28][29] microstructures, 25,[30][31][32] and chemistry [33][34][35][36] would exhibit different properties. The wrought material condition exhibited the greatest average yield stress of 1051 MPa, followed by the onestep annealing HT at 880 MPa (16.3% reduction from wrought yield stress).…”

Section: Tensile Test Resultsmentioning

confidence: 99%

Additively manufactured Ti‐6Al‐4V microstructure tailoring for improved fatigue life performance

Beal,

Salehi,

Kingstedt

2024

Fatigue Fract Eng Mat Struct

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In this study, laser powder bed fusion (LPBF)‐produced Ti‐6Al‐4V is subjected to three separate post‐build heat treatments (HTs), specifically (1) a one‐step annealing HT exceeding the ‐transus temperature, (2) a two‐step annealing HT whose first step exceeds the ‐transus temperature and the second step is an anneal below the ‐transus temperature, and (3) a sawtooth HT with temperatures oscillating below the ‐transus temperature. Tensile properties and fatigue crack growth behavior were assessed and compared to wrought Ti‐6Al‐4V. LPBF materials nominally exhibited a 17% yield stress reduction, 1.9% strain‐to‐failure increase, and 9.2% modulus of toughness decrease. Fatigue crack growth curves were used to assess the linear crack growth rate region and approximate fracture toughness (). Post‐mortem fractography observed striations indicating the crack growth direction frequently changes direction providing an understanding of the slower crack growth rates observed in LPBF materials compared to their wrought counterpart.

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Section: Tensile Test Resultsmentioning

confidence: 99%

Additively manufactured Ti‐6Al‐4V microstructure tailoring for improved fatigue life performance

Beal,

Salehi,

Kingstedt

2024

Fatigue Fract Eng Mat Struct

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“…The effects of particle size, shape, and orientation, along with the interface strength on the mechanical behaviour were presented. Zhou et al [12] studied the effects of high strain rates and different orientations on tensile behaviour and microcosmic evolution of Ti-6Al-4V sheets. The final damage of unidirectional composites under transverse loading has been demonstrated to be caused some reasons,they are interfacial cracking and matrix damage, mainly due to the stress concentration resulting from the addition of fibres to the matrix [6]; therefore, the calculation of the transverse strength of long SiC fibre-reinforced titanium matrix composites m into account the effect of stress concentration [13].…”

Section: Introductionmentioning

confidence: 99%

Modification of the model for calculating the long SiC fibre-reinforced metal matrix composites transverse strength and study for interfacial influences

Luo,

Sha

2023

Mater. Res. Express

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The transverse strength of long SiC fibre-reinforced metal matrix composites is superior to its longitudinal strength owing to interface factors. To accurately predict the transverse strength of long SiC fibre-reinforced metal matrix composites, a micro-mechanics representative volume element (RVE) model was developed; periodic boundary conditions were applied to the model to ensure its displacement and stress continuity. Taking into account the influence of the stress concentration coefficient of the matrix, the failure strength of long SiC fibre-reinforced metal matrix composites under transverse tensile loads and compressive loads were calculated, where the error between the calculation results of the model and the test results was found to be large. A novel calculation method based on the interfacial cohesion model is proposed herein, to improve the accuracy of the RVE model. It was found that the accuracy of the corrected model calculation has been improved through a comparison with the experimental values. The stress/strain relationship between interfaces of different strengths under tensile and compressive loads was analysed, the failure index of interface strength was extracted, and the relationship between the influence of interface strength on failure was determined.

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Effect of anisotropy and cutting speed on chip morphology of Ti-6Al-4V under high-speed cutting

Shi

Pan

et al. 2021

Int J Adv Manuf Technol

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Effect of high strain rates and different orientations on tensile behavior and microcosmic evolution of Ti-6Al-4V sheet

Cited by 5 publications

References 18 publications

Additively manufactured Ti‐6Al‐4V microstructure tailoring for improved fatigue life performance

Additively manufactured Ti‐6Al‐4V microstructure tailoring for improved fatigue life performance

Modification of the model for calculating the long SiC fibre-reinforced metal matrix composites transverse strength and study for interfacial influences

Effect of anisotropy and cutting speed on chip morphology of Ti-6Al-4V under high-speed cutting

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