The 2205 duplex stainless ＋ DH36 clad steel plate was welded by gas metal arc welding（GMAW）, and the welding performance of the clad steel plate was investigated. The results show that the adaptability of the weldi...The 2205 duplex stainless ＋ DH36 clad steel plate was welded by gas metal arc welding（GMAW）, and the welding performance of the clad steel plate was investigated. The results show that the adaptability of the welding procedure for the base metal of carbon steel, the transition layer, and the cladding material is excellent. The test results indicate that the phase proportion and component dilution of the GMAW-welded joints of clad steel plate can be effectively controlled to yield joints with good mechanical properties and corrosion resistance.展开更多
Duplex stainless steel clad plate exhibits good performance and is relatively inexpensive,however,some difficulties must be overcome when welding different materials. In this study,submerged arc welding（ SAW） was us...Duplex stainless steel clad plate exhibits good performance and is relatively inexpensive,however,some difficulties must be overcome when welding different materials. In this study,submerged arc welding（ SAW） was used to weld Baosteel ship clad plates（ 2205 ＋ DH36）,and the performance of the welded joints was tested. The results indicate that the mechanical properties and the corrosion resistance of the welded joints meet the required specifications. The distribution of the main anti-corrosive elements and the phase ratio of the welded joint are analyzed,thereby indicating excellent uniformity and confirming that the welded joint is corrosion resistant.展开更多
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
The 2205/Q235 clad plate was fabricated by vacuum hot rolling with symmetrical assembling pattern of Q235/2205/2205/ Q235.The flow stress behavior and processing map of 2205 duplex stainless steel (DSS)were investigat...The 2205/Q235 clad plate was fabricated by vacuum hot rolling with symmetrical assembling pattern of Q235/2205/2205/ Q235.The flow stress behavior and processing map of 2205 duplex stainless steel (DSS)were investigated by hot compressive tests on a Gleeble-3800 simulator.Then,thermal-mechanical coupled nonlinear finite element models of vacuum hot rolling and subsequent cooling process were established.From the simulation results,the influence of rolling reduction and rolling speed on hot deformation state of 2205 DSS in the assembled slab was disclosed and the optimal rolling parameters were presented.Meanwhile,the cooling rate of 2205 DSS under different cooling conditions and thicknesses of the clad plate was obtained.According to the numerical simulation results,pilot experiments were successfully carried out on a laboratory scale.The material universal testing machine,optical microscope,scanning electron microscope and energy-dispersive spectrometer were used to evaluate the mechanical properties and microstructure of bonding interface and 2205 DSS matrix for different rolling reduction and cooling processes.The results showed that with symmetrical assembling pattern,the approximate thermodynamic conditions can be established for 2205 DSS to avoid cracks in hot rolling process.When the rolling reduction increased from 10 to 40%,the shear strength of the bonding interface is increased from 120 to 530 MPa,and the uniform two-phase microstructure of 2205 DSS and satisfactory' mechanical properties can be obtained with cooling rate higher than 10℃/s between 1050 and 500℃ after rolling.展开更多
文摘The 2205 duplex stainless ＋ DH36 clad steel plate was welded by gas metal arc welding（GMAW）, and the welding performance of the clad steel plate was investigated. The results show that the adaptability of the welding procedure for the base metal of carbon steel, the transition layer, and the cladding material is excellent. The test results indicate that the phase proportion and component dilution of the GMAW-welded joints of clad steel plate can be effectively controlled to yield joints with good mechanical properties and corrosion resistance.
文摘Duplex stainless steel clad plate exhibits good performance and is relatively inexpensive,however,some difficulties must be overcome when welding different materials. In this study,submerged arc welding（ SAW） was used to weld Baosteel ship clad plates（ 2205 ＋ DH36）,and the performance of the welded joints was tested. The results indicate that the mechanical properties and the corrosion resistance of the welded joints meet the required specifications. The distribution of the main anti-corrosive elements and the phase ratio of the welded joint are analyzed,thereby indicating excellent uniformity and confirming that the welded joint is corrosion resistant.
文摘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.
基金National Natural Science Foundation of China (Grant Nos.51474189 and 51674222)Natural Science Foundation of Hebei Province Distinguished Young Fund Project (Grant No.E2018203446)Educational Commission of Hebei Province (QN2015214).
文摘The 2205/Q235 clad plate was fabricated by vacuum hot rolling with symmetrical assembling pattern of Q235/2205/2205/ Q235.The flow stress behavior and processing map of 2205 duplex stainless steel (DSS)were investigated by hot compressive tests on a Gleeble-3800 simulator.Then,thermal-mechanical coupled nonlinear finite element models of vacuum hot rolling and subsequent cooling process were established.From the simulation results,the influence of rolling reduction and rolling speed on hot deformation state of 2205 DSS in the assembled slab was disclosed and the optimal rolling parameters were presented.Meanwhile,the cooling rate of 2205 DSS under different cooling conditions and thicknesses of the clad plate was obtained.According to the numerical simulation results,pilot experiments were successfully carried out on a laboratory scale.The material universal testing machine,optical microscope,scanning electron microscope and energy-dispersive spectrometer were used to evaluate the mechanical properties and microstructure of bonding interface and 2205 DSS matrix for different rolling reduction and cooling processes.The results showed that with symmetrical assembling pattern,the approximate thermodynamic conditions can be established for 2205 DSS to avoid cracks in hot rolling process.When the rolling reduction increased from 10 to 40%,the shear strength of the bonding interface is increased from 120 to 530 MPa,and the uniform two-phase microstructure of 2205 DSS and satisfactory' mechanical properties can be obtained with cooling rate higher than 10℃/s between 1050 and 500℃ after rolling.
