Texture Evolution and Residual Stress Relaxation in a Cold-Rolled Al-Mg-Si-Cu Alloy Using Vibratory Stress Relief Technique

Wang, Jia-Siang; Hsieh, Chih-Chun; Lin, Chi-Ming; Kuo, Chia Wen; Wu, Weite

doi:10.1007/s11661-012-1450-8

Cited by 30 publications

(13 citation statements)

References 25 publications

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“…Goss/Brass volume fraction ratio has great influence on the fracture toughness of the alloy, and the higher the ratio, the higher the fracture toughness of the materials 16 . Most previous studies about the effect of texture evolution on the mechanical properties of aluminum alloys are concentrated on just one single pass of the rolling, either hot rolling or cold rolling 11,[17][18][19][20][21] . It should be noted that multipass rolling deformation, including both cold rolling and hot rolling, are required for 6111 aluminum alloys to be used as automotive skin and other structural members in machinery, and the texture evolution during each rolling pass might affect significantly the final mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Texture, Microstructure and Mechanical Properties of 6111 Aluminum Alloy Subject to Rolling Deformation

et al. 2017

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The mechanical properties, texture and microstructural evolution of a 6111 aluminum alloy during hot rolling and cold rolling deformation were systematically investigated in this article. The results show that cold rolling and hot rolling have significant effects on the tensile behaviors of the alloy. The shear texture and recrystallization texture mainly formed during the hot rolling deformation process, while the rolling texture mainly formed during the cold rolling deformation. The grain refinement mechanisms depend significantly on the rolling process. Movement of shear zone and recrystallization are the main grain refinement mechanisms during the hot rolling process, while dislocations tangling is the main grain refinement mechanism during the cold rolling process. The recrystallization textures and shear textures affect the anisotropy in elongation but the rolling textures affect significantly the anisotropy in yield strength.

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Section: Introductionmentioning

confidence: 99%

Texture, Microstructure and Mechanical Properties of 6111 Aluminum Alloy Subject to Rolling Deformation

et al. 2017

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“…[49] A vibratory stress relief process is a type of cyclic creep. [52][53][54][55] Softening and creep are parallel cyclic behaviors during cyclic loading of prestrained metals. The softening behavior is associated with mutual annihilation of dislocations paired with opposite signs (glide) and the rearrangements (climb) of the residual dislocations (identical signs) that form low-energy structures.…”

Section: Grain Elongation Due To Ultrasoundmentioning

confidence: 99%

Accommodation of Plastic Deformation by Ultrasound-Induced Grain Rotation

Dutta

Petrov

Hermans

et al. 2015

Metall Mater Trans A

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Electron backscatter diffraction was used to investigate the softening effect in low-carbon steel [Fe-0.051C-0.002Si-0.224Mn-0.045Al (wt pct)] during tensile deformation with in situ ultrasonic treatment. A bimodal grain size distribution is observed with relatively small equiaxed grains with an average diameter of 10 lm at the grain boundaries of large elongated grains. The formation of these relatively small equiaxed grains is interpreted in terms of dynamic recrystallization by lattice and sub-grain rotation.

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“…Results in literature [23] show that the macro-residual stresses of the welded steel plates of D6AC and D406A decreased to 0 ± 25 MPa after VSR. Wang et al [24] believed that the relaxation effect of compressive residual stress after VSR was better than that of tensile residual stress; the compressive residual stress and texture density increased first and then decreased with an increase in the vibration time. The said researchers also determined in another study that the strong basal textures of AZ31 Mg alloys would be weaken when the vibration time was more than 10 min [25].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Fatigue Life of Ti-6Al-4V Treated by Vibratory Stress Relief

Zhang

Song³

2017

Metals

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Vibratory stress relief (VSR) is a highly efficient and low-energy consumption method to relieve and homogenize residual stresses in materials. Thus, the effect of VSR on the fatigue life should be determined. Standard fatigue specimens are fabricated to investigate the fatigue life of Ti-6Al-4V titanium alloy treated by VSR. The dynamic stresses generated under different VSR amplitudes are measured, and then the relationship between the dynamic stress and vibration amplitude is obtained. Different specimen groups are subjected to VSRs with different amplitudes and annealing treatment with typical process parameters. Residual stresses are measured to evaluate the stress relieving effects. Finally, the fatigue behavior under different states is determined by uniaxial tension-compression fatigue experiments. Results show that VSR and annealing treatment have negative effects on the fatigue life of Ti-6Al-4V. The fatigue life is decreased with the increase in VSR amplitude. When the VSR amplitude is less than 0.1 mm, the decrease in fatigue limit is less than 2%. Compared with specimens without VSR or annealing treatment, the fatigue limit of the specimens treated by VSR with 0.2 mm amplitude and annealing treatment decreases by 10.60% and 8.52%, respectively. Although the stress relieving effect is better, high amplitude VSR will lead to the decrease of Ti-6Al-4V fatigue life due to the defects generated during vibration. Low amplitude VSR can effectively relieve the stress with little decrease in fatigue life.

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Texture Evolution and Residual Stress Relaxation in a Cold-Rolled Al-Mg-Si-Cu Alloy Using Vibratory Stress Relief Technique

Cited by 30 publications

References 25 publications

Texture, Microstructure and Mechanical Properties of 6111 Aluminum Alloy Subject to Rolling Deformation

Texture, Microstructure and Mechanical Properties of 6111 Aluminum Alloy Subject to Rolling Deformation

Accommodation of Plastic Deformation by Ultrasound-Induced Grain Rotation

Experimental Investigation on the Fatigue Life of Ti-6Al-4V Treated by Vibratory Stress Relief

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