The influence of the ratio of “rotational speed/traverse speed” (ω/v) on mechanical properties of AZ31 friction stir welds

Abbasi, Majid; Kokabi, A.H.; Daneshi, G.H.; Shalchi, B.; Sarrafi, Rouzbeh

doi:10.1016/j.ijmachtools.2006.01.007

Cited by 149 publications

(73 citation statements)

References 13 publications

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“…Além disso, nenhum material de adição é usado, de modo que a junta tem a mesma composição que o metal de base [8]. A busca pelos melhores parâmetros de processo e a influência deles nas propriedades de juntas soldadas obtidas por SFMM tem sido o tópico de maior atenção por diversos pesquisadores [9,10]. Gharacheh et al [10] investigaram a influência da velocidade de rotação da ferramenta (w) e a velocidade de soldagem (v) considerando a razão w/v nas propriedades de juntas soldadas de ligas a base de Magnésio obtidas pelo método de SFMM.…”

Section: Introductionunclassified

“…A busca pelos melhores parâmetros de processo e a influência deles nas propriedades de juntas soldadas obtidas por SFMM tem sido o tópico de maior atenção por diversos pesquisadores [9,10]. Gharacheh et al [10] investigaram a influência da velocidade de rotação da ferramenta (w) e a velocidade de soldagem (v) considerando a razão w/v nas propriedades de juntas soldadas de ligas a base de Magnésio obtidas pelo método de SFMM. Eles concluíram que um aumento da razão w/v leva a um aumento do aporte térmico e uma diminuição das propriedades mecânicas na zona de mistura da junta soldada.…”

Section: Introductionunclassified

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Efeito Da Velocidade De Rotação Da Ferramenta Na Soldagem Por Fricção E Mistura Mecânica Da Liga Inconel 625

Lemos¹,

Farina²,

Martinazzi³

et al. 2017

Anais Do Congresso Anual Da ABM

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Section: Introductionunclassified

Efeito Da Velocidade De Rotação Da Ferramenta Na Soldagem Por Fricção E Mistura Mecânica Da Liga Inconel 625

Lemos¹,

Farina²,

Martinazzi³

et al. 2017

Anais Do Congresso Anual Da ABM

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“…In the most of the experimental examinations, first, researchers tried to obtain optimum parameters for best welding performance. However, Gharacheh et al (2006) determined some of important parameters effecting welding performance such as axial tool pressure (P), rotational speed (ω) and traverse speed (v) on weld properties. Xunhong and Kuaishe (2006) aimed to obtain the best parameters for FSWed AZ31 Mg alloy joint with excellent appearance and no distortion in their study.…”

Section: Introductionmentioning

confidence: 99%

Friction Stir Welding of AZ31 Magnesium Alloys - A Numerical and Experimental Study

Serіndağ

Kıral

2017

Lat. Am. j. solids struct.

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In this paper, weldability of magnesium alloys by friction stir welding (FSW) method which is difficult to join by the fusion welding have been investigated experimentally and numerically. To this end, the connection of magnesium alloys was performed using different welding parameters. AZ31 Mg-alloy plates were friction stir welded at rotation speed of 1200 rev/min and translational speeds of 80,100,120,140 mm/min. Temperature evolution in the weld zone during welding was measured by using embedded K-type thermocouples. The temperature measurements on both advancing and retreading sides were performed by ten thermocouples. Tensile and Vickers hardness tests were conducted to evaluate the mechanical properties and the hardness distribution on the weld, respectively. During FSW, heat is generated by the friction and plastic deformation. Knowledge of the temperature distribution is requisite since mechanical properties and microstructure are substantially affected by the heat generation. It was observed that the heat generated during the FSW process was increasing and the grain structure was refined as the translational speed was decreasing. In the finite element analyses, modeling of the FSW process were carried out by ANSYS software to determine the temperature and stress distributions in the welded joint during FSW. An APDL (ANSYS Parametric Design Language) code was developed to simulate FSW process. Transient nonlinear finite element analyses were performed at two stages which the first step is thermal analysis which heat transfer from the pin and shoulder to the plates was modeled and the second is the structural analysis which the temperature data obtained from the thermal analysis in the first stage is used.

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“…The yield strengths are related to the heat input near the welded region and to the grain size of SZ. In the welding process, increasing heat input can make material of welding region softer [31], resulting in a slight decrease of the yield strength. Considering the microstructural aspect, the lack of heat input has a greater influence on grain refinement by the welding tool.…”

Section: Macroscopic/microscopic Analysismentioning

confidence: 99%

Influence of Friction Stir Welding on Mechanical Properties of Butt Joints of AZ61 Magnesium Alloy

Sun

Kim

Lee

et al. 2017

Advances in Materials Science and Engineering

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In this study, the effect of heat input on the mechanical properties and fracture behaviors of AZ61 magnesium alloy joints has been studied. Magnesium alloy AZ61 plates with thickness of 5 mm were welded at different ratios of tool rotational speed to welding speed ( /]). The average ultimate tensile strength of all weld conditions satisfying a /] ratio of 3 reached 100% of the strength of the base material. Fractures occurred at the interface between the thermomechanical affected zone at advancing side and the stir zone in all welded specimens. From the scanning electron microscope and electron backscatter diffraction analysis, it was determined that the interface between the thermomechanical affected zone and the stir zone, which is the region where the grain orientation changes, was the weakest part; the advancing side region was relatively weaker than the retreating side region because the grain orientation change occurred more dramatically in the advancing side region.

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The influence of the ratio of “rotational speed/traverse speed” (ω/v) on mechanical properties of AZ31 friction stir welds

Cited by 149 publications

References 13 publications

Efeito Da Velocidade De Rotação Da Ferramenta Na Soldagem Por Fricção E Mistura Mecânica Da Liga Inconel 625

Efeito Da Velocidade De Rotação Da Ferramenta Na Soldagem Por Fricção E Mistura Mecânica Da Liga Inconel 625

Friction Stir Welding of AZ31 Magnesium Alloys - A Numerical and Experimental Study

Influence of Friction Stir Welding on Mechanical Properties of Butt Joints of AZ61 Magnesium Alloy

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