Research on fatigue crack growth behavior of AZ31B magnesium alloy electron beam welded joints based on temperature distribution around the crack tip

Cui, Zeqin; Yang, Tzu‐Ting; Wang, W.X.; Zhang, Yan; Ma, Zhenduo; Xu, Bingshe; Xu, Huining

doi:10.1016/j.engfracmech.2014.11.004

Cited by 13 publications

(2 citation statements)

References 40 publications

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“…The mean area of grain in the weld centre is thus reduced from 359.9 mm to 213.7 mm. Table 4 and 5 shows that the majority of AZ31 and AZ61 Mg alloys have been investigated [84,[109][110][111]. The different welding process parameters considered were equally indicated.…”

Section: Laser Weldingmentioning

confidence: 99%

Welding of magnesium and its alloys: an overview of methods and process parameters and their effects on mechanical behaviour and structural integrity of the welds

et al. 2021

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An overview of welding methods and process parameters and its effects on mechanical behaviour and structural integrity of magnesium and its alloys are discussed. These alloys are less dense and beneficial structural alloys for improved energy efficiency, eco-friendliness and driver of circular economic model for sustainable design and innovative ecosystem. While the application of Mg-alloys is projected to increase, understanding the mechanical behaviour and structural integrity of welded joints are critical. Thus, fusion and solid-state welding processes of these alloys are discussed with emphasis on mechanical characterization. Laser welding is the most effective fusion welding technique for most Mg alloys whereas, the predominant solid-state method is friction stir welding. The importance of process variables such as heat inputs, welding velocity (speed) and post weld treatments on the microstructural evolution, on mechanical and physical properties of the distinct zones of the weld joints are described. The weldment is the most susceptible to failure due to phase transformation, defects such as microporosity and relatively coarse grain sizes after solidification. The implication of the design of quality weld joints of Mg alloys are explored with areas for future research directions briefly discussed.

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Section: Laser Weldingmentioning

confidence: 99%

Welding of magnesium and its alloys: an overview of methods and process parameters and their effects on mechanical behaviour and structural integrity of the welds

et al. 2021

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“…The method was successfully employed to analyse the J integral evolution during fracture process in the dynamic impact test experimented on HY100 steel. By introducing infrared thermography in the investigation of fatigue crack growth behaviour of AZ31B magnesium alloy electron beam welded joints, Cui et al 13 demonstrated that the temperature rise ΔT around the crack tip as a function of ΔK can be utilised as an index to predict fatigue crack growth. In the plane-strain fracture toughness test of SiC p /Al composites, Myriounis et al 14 adopted infrared thermography to monitor the plane crack propagation behaviour and to verify the validity of the results.…”

Section: Introductionmentioning

confidence: 99%

Temperature evolution analysis of AZ31B magnesium alloy during quasi-static fracture

Zhang

Wang

Zhou

et al. 2016

Materials Science and Technology

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Fracture toughness of AZ31B magnesium alloy subjected to quasi-static loading was investigated by infrared thermography. The results showed that temperature evolution around the crack propagation path during fracture underwent three stages: initial steady stage, monotonic increase stage and final steady stage. The temperature increase at the beginning of stage II is nearly corresponding to the initiation of unstable crack propagation. And based on this phenomenon, a method applying infrared thermography to estimate fracture toughness of AZ31B magnesium alloy was proposed. Fracture toughness was calculated through infrared thermography, which was in good agreement with the result determined by traditional standard method. Finally, the fracture mechanism was investigated.

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Fatigue limit assessment of a 6061 aluminum alloy based on infrared thermography and steady ratcheting effect

Feng

Wang

Zhang

et al. 2020

Int J Miner Metall Mater

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Research on fatigue crack growth behavior of AZ31B magnesium alloy electron beam welded joints based on temperature distribution around the crack tip

Cited by 13 publications

References 40 publications

Welding of magnesium and its alloys: an overview of methods and process parameters and their effects on mechanical behaviour and structural integrity of the welds

Welding of magnesium and its alloys: an overview of methods and process parameters and their effects on mechanical behaviour and structural integrity of the welds

Temperature evolution analysis of AZ31B magnesium alloy during quasi-static fracture

Fatigue limit assessment of a 6061 aluminum alloy based on infrared thermography and steady ratcheting effect

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