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Corrosion behavior of aluminum/steel dissimilar metals friction stir welding joint 被引量:10
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作者 Mo Shuxian Dong Shaokang +2 位作者 Zhu Hao Jiao Yinan Wang Jun 《China Welding》 CAS 2021年第3期20-30,共11页
The corrosion performance of aluminum/steel contact and aluminum/steel FSW joint in 3.5 wt.%NaCl solution were analyzed using potentiostatic tests.The post-corrosion microstructure of the welding joint was characteriz... The corrosion performance of aluminum/steel contact and aluminum/steel FSW joint in 3.5 wt.%NaCl solution were analyzed using potentiostatic tests.The post-corrosion microstructure of the welding joint was characterized by optical microscope(OM),scanning electron microscopy(SEM)and energy dispersive spectroscopy(EDS).The results showed that the localized corrosion of FSW joint of Al/steel dissimilar metals mainly initiated at the interface transition zone(ITZ).Precipitation of intermetallic compounds(IMCs)and Fe-rich phase particles in ITZ accelerated the corrosion of the FSW joint.This phenomenon has been attributed to distinct corrosion potentials between IMCs and steel,aluminum base metal.The corrosion resistance sequence of IMCs in ITZ is Fe_(3)Al>FeAl>Fe_(2)Al_(5). 展开更多
关键词 aluminum/steel dissimilar metals joining corrosion behavior Intermetallic compounds
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Microstructure in the Weld Metal of Austenitic-Pearlitic Dissimilar Steels and Diffusion of Element in the Fusion Zone 被引量:6
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作者 Yajiang LI, Zengda ZOU and Bing ZHOU Department of Materials Engineering, Shandong University, Jinan 250061, China E-mail: yajli@jn-public.sd.cninfo.net 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2001年第3期338-342,共5页
Microstructure and alloy element distribution in the welded joint between austenitic stainless steel (1Cr18Ni9Ti) and pearlitic heat-resistant steel (1Cr5Mo) were researched by means of light microscopy, scanning elec... Microstructure and alloy element distribution in the welded joint between austenitic stainless steel (1Cr18Ni9Ti) and pearlitic heat-resistant steel (1Cr5Mo) were researched by means of light microscopy, scanning electron microscopy (SEM) and electron probe microanalysis (EPMA). Microstructure, divisions of the fusion zone and elemental diffusion distributions in the welded joints were investigated. Furthermore, solidification microstructure and S-ferrite distribution in the weld metal of these steels are also discussed. 展开更多
关键词 Microstructure in the Weld Metal of Austenitic-Pearlitic dissimilar steels and Diffusion of Element in the Fusion Zone
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Effect of process parameters on microstructure and properties of laser welded joints of aluminum/steel with Ni/Cu interlayer 被引量:8
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作者 Xue-long CAO Gang WANG +2 位作者 Chang XING Cai-wang TAN Jun-jun JIANG 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2021年第8期2277-2286,共10页
The effects of laser parameters and interlayer material on the microstructure and properties of the welded joint between 6061 aluminum alloy and stainless steel were studied.The results show that the density and micro... The effects of laser parameters and interlayer material on the microstructure and properties of the welded joint between 6061 aluminum alloy and stainless steel were studied.The results show that the density and microstructure of the welded joint can be optimized by changing the laser power with 0.05 mm Cu foil and 0.1 mm Ni foil as interlayer.A large number of new Cu-Al binary phases were found near the aluminum alloy,which effectively inhibited the formation of the binary brittle phase of Fe-Al.The maximum shear force of 1350.96 N was obtained with laser power of 2200 W.The shear force of the welded joint increased to 1754.73 N when the thickness of the Cu foil thickness changed to 0.02 mm. 展开更多
关键词 laser welding aluminum/steel dissimilar metals INTERLAYER microstructure mechanical properties
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Characterization of Microstructure, Strength, and Toughness of Dissimilar Weldments of Inconel 625 and Duplex Stainless Steel SAF 2205 被引量:7
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作者 R. Sridhar K. Devendranath Ramkumar N. Arivazhagan 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2014年第6期1018-1030,共13页
The dissimilar combinations of Inconel 625 and duplex stainless steel SAF 2205 obtained from manual GTA welding process employing ER2209 and ERNi CrMo-3 filler metals have been investigated. Formation of secondary pha... The dissimilar combinations of Inconel 625 and duplex stainless steel SAF 2205 obtained from manual GTA welding process employing ER2209 and ERNi CrMo-3 filler metals have been investigated. Formation of secondary phases at the HAZ of Inconel 625 and grain coarsening at the HAZ of SAF 2205 were witnessed while using these filler wires. The average hardness of ER2209 weldments was found to be greater than ERNi CrMo-3 weld. Tensile fracture was observed at the weld zones for both the fillers. Impact test trials showed brittle mode of fracture on employing ER2209 filler and mixed(ductile–brittle) mode of fracture while using ERNi CrMo-3 filler. Further optical microscopy and SEM/EDS analysis were carried out across the weldments to investigate the structure–property relationships. 展开更多
关键词 Inconel 625 Duplex stainless steel SAF 2205 dissimilar metal welding Microstructure Mechanical characterization
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