Residual Stresses and Tensile Properties of Friction Stir Welded AZ31B-H24 Magnesium Alloy in Lap Configuration

Naik, B. S.; Cao, X.; Wanjara, P.; Friedman, J.; Chen, D.L.

doi:10.1007/s11663-015-0338-6

Cited by 7 publications

(6 citation statements)

References 25 publications

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“…It was observed that both the longitudinal and transverse residual stress exhibited similar distribution profiles for each weld examined in this work, but it is not strictly symmetry. The result was consistent with the research of Naik et al 33 of the AZ31B FSW joint. Specifically, the longitudinal residual stress tended to be tensile on the AS regions of the NZ, TWAZ and HAZ.…”

Section: Residual Stresssupporting

confidence: 93%

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Improved properties of friction stir-welded AZ31 magnesium alloy by post-weld heat treatment

Wang

Yan

Zhang

et al. 2017

Materials Science and Technology

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Mechanical properties and microstructure of friction stir-welded AZ31 based on variety post-weld heat treatment (PWHT) temperatures were evaluated, and an optimal PWHT condition was identified. At rotational speed of 1200 rev min−1 and welding speed of 300 mm min−1, the average yield tensile, tensile strength and elongation of friction stir-welded joints was 92.5 MPa, 199.1 MPa and 7.3%, respectively. It was found that (300°C – 1 h) heat treatment after welding was more beneficial than other heat treatments in enhancing the mechanical properties and homogenising grain size. The maximum yield and tensile strength was 139.9 and 238.4 MPa, respectively, tensile longitudinal and compressive transverse residual stress could be effectively eliminated, and the fatigue strength increased 34.2% comparing with as-welded joints.

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Section: Residual Stresssupporting

confidence: 93%

“…The result was consistent with the research of Naik et al . 33 of the AZ31B FSW joint. Specifically, the longitudinal residual stress tended to be tensile on the AS regions of the NZ, TWAZ and HAZ.…”

Section: Resultsmentioning

confidence: 99%

Improved properties of friction stir-welded AZ31 magnesium alloy by post-weld heat treatment

Wang

Yan

Zhang

et al. 2017

Materials Science and Technology

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“…In addition to the loading direction, the residual stress distribution across the FSW joint will vary considerably, which can induce crack closure in compressive regions, while accelerated growth occurs when the crack deviates into a region of tensile residual stress [54]. Asymmetrical residual stresses can also be formed, with tensile residual stresses potentially found only on the advancing side of the joint [55]. It is expected that these complex factors will significantly contribute to the scatter in the reported fatigue data since few of the fatigue studies considered differences in residual stress state.…”

Section: Fatigue Data For Fsw Jointsmentioning

confidence: 99%

Aluminum friction stir welds: Review of fatigue parameter data and probabilistic fracture mechanics analysis

Miranda

Gerlich

Walbridge

2015

Engineering Fracture Mechanics

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“…They discussed on the relationship between residual stress, hardness distribution, and weld zone microstructure as a function of welding travel speed. Naik et al worked on tensile properties and residual stress of friction stir welding in lab configuration [13]. They used X-ray diffraction to specify the residual stresses in the transverse and longitudinal direction of the weld.…”

Section: Introductionmentioning

confidence: 99%

Detection of residual stress in friction stir welding of heterogeneous aluminum/copper sheets—ultrasonic method

Valizadeh

Montazerolghaem

Fesharaki

2021

Int J Adv Manuf Technol

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In this paper, using the ultrasonic method, the residual stress due to friction stir welding of two different metals aluminum 5754 and copper is investigated. Furthermore, the effects of changing the rotational speed and speed of movement along the welding path on residual stress are presented. For this purpose, some experimental tests are considered. The results show that the residual stress in the pin area is higher than stress in other zones of the weld which is due to the pressure applied by the pin to the parts. Furthermore, based on the presented results, decreasing the speed of movement along the welding path and increasing the rotational speed increase the residual stress in sheets. The results also indicate that the residual stress in aluminum is greater than the residual stress in the copper sheet since the thermal conductivity of the aluminum is smaller and the stiffness of the aluminum is greater than those corresponding to copper. The results show that the ultrasonic method can be used to specify the residual stress in friction stir welding of two different materials. To ensure the quality of the welding, the optical microscopy image of a cross-section from the HAZ zone is presented.

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Residual Stresses and Tensile Properties of Friction Stir Welded AZ31B-H24 Magnesium Alloy in Lap Configuration

Cited by 7 publications

References 25 publications

Improved properties of friction stir-welded AZ31 magnesium alloy by post-weld heat treatment

Improved properties of friction stir-welded AZ31 magnesium alloy by post-weld heat treatment

Aluminum friction stir welds: Review of fatigue parameter data and probabilistic fracture mechanics analysis

Detection of residual stress in friction stir welding of heterogeneous aluminum/copper sheets—ultrasonic method

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