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2019110 · Three A7N01 aluminum alloys with different Si contents (0.01%wt. Si, 0.1%wt. Si and 0.38%wt. Si) were investigated in this work. The as-cast aluminum alloys
contact2019110 · Experimental procedures. Three A7N01 aluminum alloys with different Si contents (0.01%wt. Si, 0.1%wt. Si and 0.38%wt. Si) were investigated in this work. The
contact202332 · In this paper, a self-designed low copper 7A48 wire containing scandium was used as filler material for metal inert gas (MIG) welding of 4 mm thick A7N01-T4
contactHigh strength Al-Zn-Mg-Cu system aluminum alloys (type 7A04) are widely used in aerospace and rail transit due to the advantages of light quality, big ratio intension, good
contactThe homogenization annealing was carried out, and the 7N01 aluminum alloy was used at 300 °C, 350 °C, 400 °C, 450 °C and 0.1 s-1, ... Abstract: A heat treatable A7N01 (Al-Zn
contact2019110 · Fig. 1 shows the OM microstructure of the three A7N01-T6 aluminum alloys, which indicates the overall heterogeneity of the microstructure. According to Fig. 1 a-c, the three alloys have fibrous tissue (the dark area in the figure) along the rolling direction, which is a typical micro structural feature of extrusion aluminum alloy materials [28], [29].
contact2019110 · Experimental procedures. Three A7N01 aluminum alloys with different Si contents (0.01%wt. Si, 0.1%wt. Si and 0.38%wt. Si) were investigated in this work. The as-cast aluminum alloys were drawn into rods with a diameter of 14 mm. All the bars were cut into rods of 200 mm in length and annealed at 470 °C for 24 h to achieve homogeneous ...
contact20201014 · The crack initiation zone was located on the top surface ... Chen, H. Study of local-zone microstructure, strength and fracture toughness of hybrid laser-metal-inert-gas-welded A7N01 aluminum alloy joint. ... Changshu He, Ying Li, Jingxun Wei, Menggang Zhai, Su Zhao, and Xiang Zhao. 2020. "Fatigue Behaviour of 7N01-T4
contact2016822 · Residual stress measurement and control are highly important for the safety of structures of high-speed trains, which is critical for the structure design. The longitudinal critically refracted wave technology is the most widely used method in measuring residual stress with ultrasonic method, but its accuracy is strongly related to
contact20201222 · As an Al-Mg-Zn series high-strength aluminum alloy, A7N01 is widely used in the construction of space shuttles and high-speed trains due to its lightweight, low density, high strength, and easy ...
contact202111 · The A7N01-T5 aluminum alloy plates with a thickness of 12 mm were welded with the ER5356 and ER5087 welding wires, respectively, by the method of Metal Inert Gas (MIG) welding. ... 7N01/5087 weld ...
contact2017328 · GB ASTM BS JIS NF DIN ГОСТ 1A99 1199 A199.99R A99 1A97 A199.98R A97 1A95 A95 1A80 1080 (1A) 1080 1080A A199.90 A8 1A50 1050 1050 (1B) 1050 1050A A199.50 A5 5A02 5052 NS4 5052 5052 A1Mg2.5 Amg 5A03 NS5 AMg3 5A05
contact2019130 · 7×××.pdf,RESEACH ON FATIGUE PROPERTY OF A7N01 WELDING JIONT USED IN HIGH SPEED TRAIN ABSTRACT The A7N01 aluminum alloy with good property which beong to the 7××× ...
contactThe homogenization annealing was carried out, and the 7N01 aluminum alloy was used at 300 °C, 350 °C, 400 °C, 450 °C and 0.1 s-1, ... Abstract: A heat treatable A7N01 (Al-Zn-Mg) aluminum alloy mainly used to fabricate high-speed train body structures was double-sided welded by MIG welding. The natural aging behavior of the joint was ...
contact2021128 · Abstract. Development of residual stress of high magnitude, to the extent of material yield strength and in some cases higher than yield strength, is one of the major challenges faced by components produced using the wire arc additive manufacturing (WAAM). This study focuses on aluminum alloy 5183 with respect to the residual stress
contact2016822 · Residual stress measurement and control are highly important for the safety of structures of high-speed trains, which is critical for the structure design. The longitudinal critically refracted wave technology is the most widely used method in measuring residual stress with ultrasonic method, but its accuracy is strongly related to
contact2022120 · The A7N01-T5 aluminum alloy plates with the thickness of 12 mm were welded with the ER5356 and ER5087 welding wires, respectively, by the method of Metal Inert Gas (MIG) welding. ... 7N01/5087 welded joint, including the bottom and top positions, were tested. Fig. 3(a) showed the exact positions of the test lines. The tensile testing was
contact2017331 · Surface Treatment, A7N01 Aluminum Alloy, Welding Joints, Fatigue Crack Growth Rate A7N01MIG 1，2，2 1， 2
contact7N01，a7n01: Temper: T4，T6,T651，T351，T451: Application: Bed Aluminum Plate Of High Train And ，Coal Transportation Vehicle: Shape: Plate，sheet，panel: Standard: GB/T3880, ASTM B209: Item: A7n01 Aluminum A7n01-t6 Aluminum Sheet: High Light: aluminium alloy sheet, aluminum plate panels
contact2017328 · GB ASTM BS JIS NF DIN ГОСТ 1A99 1199 A199.99R A99 1A97 A199.98R A97 1A95 A95 1A80 1080 (1A) 1080 1080A A199.90 A8 1A50 1050 1050 (1B) 1050 1050A A199.50 A5 5A02 5052 NS4 5052 5052 A1Mg2.5 Amg 5A03 NS5 AMg3 5A05
contact201315 · rolled A7N01 aluminium alloy was carried out using filler material ER5356 with a diameter of 1.6 mm. The chemical compositions of the base metal and the filler wire are given in Table 1. Prior to welding, the plates of 6 mm in thickness were cut into required dimensions (250 mm×300 mm) and thoroughly cleaned to remove
contact201963 · T6, T7, and retrogression and reaging (RRA) postweld heat treatments (PWHTs) were redefined and deployed to restore MIG-welded A7N01-T5 aluminum alloy joints in train-body structures using an inductive heating device. After the PWHT, the microstructures and mechanical properties of the joints were studied by x-ray diffraction
contact202161 · In this paper, an external magnetic field was introduced to resistance spot welding (RSW) to improve the weldability of A7N01 aluminum alloy. Comparative studies of the macro- and micro-structures, microhardness, and the static and dynamic mechanical properties between welds produced by traditional RSW and magnetically assisted RSW
contact2012121 · Abstract. Fatigue characteristics of A7N01 aluminium alloy welded joint were investigated and a fatigue crack initiation life-based model was proposed. The difference of fatigue crack initiation life among base metal, weld metal and heat affected zone (HAZ) is slight. Furthermore, the ratio of fatigue crack initiation life ( Ni) to fatigue life ...
contact2018108 · The quench sensitivity of AA7N01 aluminum alloy used for high-speed train body structure was investigated by end-quenching test, time–temperature-transformation curves simulation, transmission electron microscopy and scanning transmission electron microscopy. The hardness decreased with the increasing distance
contact2016822 · Residual stress measurement and control are highly important for the safety of structures of high-speed trains, which is critical for the structure design. The longitudinal critically refracted wave technology is the most widely used method in measuring residual stress with ultrasonic method, but its accuracy is strongly related to
contact201639 · In this paper, an experimental study of laser-metal inert gas (MIG) hybrid welding of A7N01-T6 aluminum alloy in butt joint configuration was carried out. Visual examination and optical microscope were utilized to study the macro profile and microstructure, while mechanical properties of the welds were evaluated with the help of
contact2018418 · 7xxx series aluminum alloys are widely used in railway transportation and aerospace industries for their low density and high strength [1, 2].However, A7N01 aluminum alloys suffered from stress corrosion cracking (SCC) and pitting corrosion frequently as the main material of the key components in the high-speed trains.
contact2017828 · of A7N01-T6 aluminum alloy Sang Liu1 & Jianmin Li1 & Gaoyang Mi1 & Chunming Wang1 & Xiyuan Hu1 Received: 10 October 2015/Accepted: 17 February 2016/Published online: 9 March 2016 ... for the top surface of the weld, and other welding pro-cess variables based on preliminary experience accumu-lation are showed in Table2.
contactThe welding residual stress has different effects on the mechanical properties of aluminum alloy welded joints, such as size stability, fatigue strength and stress corrosion cracking. Therefore, it is very important to evaluate the welding residual stress accurately. In this paper, the residual stress of A7N01 aluminum alloy welded joints was measured by X-ray
contact2022120 · The A7N01-T5 aluminum alloy plates with the thickness of 12 mm were welded with the ER5356 and ER5087 welding wires, respectively, by the method of Metal Inert Gas (MIG) welding. ... 7N01/5087 welded joint, including the bottom and top positions, were tested. Fig. 3(a) showed the exact positions of the test lines. The tensile testing was
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