Fracture Behavior of AlMg4.5Mn Weld Metal at Different Temperatures under Impact Loading

Cvetković, Radica Prokić; Popović, Olivera; Radović, Ljubica; Sedmak, Aleksandar; Cvetković, Ivana

doi:10.3390/su15021550

Cited by 2 publications

(4 citation statements)

References 26 publications

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“…The microstructure consists of metal grains of directional orientation, i.e., it is a typical rolling microstructure with a fine Mg 2 Al 3 mesh at the grain boundaries. Large dark microconstituents were also observed, which are mostly Mg 2 Si and (Fe, Mn)Al 6 , as explained in [21]. The pores in aluminum alloys are largely distributed within the weld metal, and sometimes in the HAZ, as shown in Figure 4b, where a pore has a large diameter, almost equal to the width of the HAZ [19].…”

Section: Metallographic Testsmentioning

confidence: 93%

“… ( a ) The microstructure of aluminum alloy AlMg4.5Mn [ 21 ]. ( b ) Large pore in the HAZ of alloy AlMg4.5Mn [ 19 ].…”

Section: Figurementioning

confidence: 99%

“…It was concluded that the shielding gas mixture significantly affects the impact toughness, slightly affects the resistance to crack initiation, and somewhat more affects crack growth due to fatigue. More recently, fractography was also used to explain higher values of weld metal toughness as evaluated at three different temperatures using instrumental Charpy pendulum impact testing to measure both the crack initiation energy and the crack growth energy [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Shielding Gas Arc Welding Process on Cavitation Resistance of Welded Joints of AlMg4.5Mn Alloy

et al. 2023

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The effect of the shielding gas arc welding process on the cavitation resistance of the three-component aluminum alloy AlMg4.5Mn and its welded joints was investigated. Welding was performed using the GTAW and GMAW processes in a shielded atmosphere of pure argon. After the welding, metallographic tests were performed, and the hardness distribution in the welded joints was determined. The ultrasonic vibration method was used to evaluate the base metal’s and weld metal’s resistance to cavitation. The change in mass was monitored to determine the cavitation rates. The morphology of the surface damage of the base metal and weld metal due to cavitation was monitored using scanning electron microscopy to explain the effect of the shielding gas arc welding process on their resistance to cavitation.

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Section: Metallographic Testsmentioning

confidence: 93%

“… ( a ) The microstructure of aluminum alloy AlMg4.5Mn [ 21 ]. ( b ) Large pore in the HAZ of alloy AlMg4.5Mn [ 19 ].…”

Section: Figurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Shielding Gas Arc Welding Process on Cavitation Resistance of Welded Joints of AlMg4.5Mn Alloy

et al. 2023

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“…As already mentioned, welded joints are of special interest when toughness is analysed because both the energies for crack initiation and propagation vary significantly in the case of heterogeneous material consisting of base metal (BM), welded metal (WM), and a heat-affected zone (HAZ), including its subzones (coarse grain (CG) and fine grain (FG)) [ 7 , 8 , 9 ]. The ductile–brittle transition is another important aspect of welded joints due to their heterogeneity, as shown by 3D transient analyses of Charpy impact specimens [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Temperature on S32750 Duplex Steel Welded Joint Impact Toughness

et al. 2023

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The search for alternative materials that can be used for parts of aircraft hydraulic systems has led to the idea of applying S32750 duplex steel for this purpose. This steel is mainly used in the oil and gas, chemical, and food industries. The reasons for this lie in this material’s exceptional welding, mechanical, and corrosion resistance properties. In order to verify this material’s suitability for aircraft engineering applications, it is necessary to investigate its behaviour at various temperatures since aircrafts operate at a wide range of temperatures. For this reason, the effect of temperatures in the range from +20 °C to −80 °C on impact toughness was investigated in the case of S32750 duplex steel and its welded joints. Testing was performed using an instrumented pendulum to obtain force–time and energy–time diagrams, which allowed for more detailed assessment of the effect of testing temperature on total impact energy and its components of crack initiation energy and crack propagation energy. Testing was performed on standard Charpy specimens extracted from base metal (BM), welded metal (WM), and the heat-affected zone (HAZ). The results of these tests indicated high values of both crack initiation and propagation energies at room temperature for all the zones (BM, WM, and HAZ) and sufficient levels of crack propagation and total impact energies above −50 °C. In addition, fractography was conducted through optical microscopy (OM) and scanning electron microscopy (SEM), indicating ductile vs. cleavage fracture surface areas, which corresponded well with the impact toughness values. The results of this research confirm that the use of S32750 duplex steel in the manufacturing of aircraft hydraulic systems has considerable potential, and future work should confirm this.

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Fracture Behavior of AlMg4.5Mn Weld Metal at Different Temperatures under Impact Loading

Cited by 2 publications

References 26 publications

Effect of Shielding Gas Arc Welding Process on Cavitation Resistance of Welded Joints of AlMg4.5Mn Alloy

Effect of Shielding Gas Arc Welding Process on Cavitation Resistance of Welded Joints of AlMg4.5Mn Alloy

Effect of Temperature on S32750 Duplex Steel Welded Joint Impact Toughness

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