Aluminum 5052(Al 5052)-stainless steel 316(SS 316)plates were explosively cladded with Al 1100,pure copper and SS 304 interlayers.The operational parameters viz.,standoff distance,explosive mass ratio(mass ratio of th...Aluminum 5052(Al 5052)-stainless steel 316(SS 316)plates were explosively cladded with Al 1100,pure copper and SS 304 interlayers.The operational parameters viz.,standoff distance,explosive mass ratio(mass ratio of the explosive to the flyer plate)and inclination angle were varied and the results were presented.The advent of interlayer relocates the lower boundary of the welding window,and enhances the welding regime by 40%.A triaxial welding window,considering the influence of the third operational parameter,was developed as well.Use of interlayer transforms the continuous molten layer formed in the traditional Al 5052-SS 316 explosive clad interfaces into a smooth interface devoid or with a slender presence of intermetallic compounds.The microhardness,ram tensile and shear strengths of the interlayered clads are higher than those of the traditional explosive clads,and the maximum values are witnessed for stainless steel interlaced Al 5052-SS 316 explosive clads.展开更多
Lap Joining of 5052 aluminum alloy(Al5052)to Ti6Al4V titanium alloy(Ti6Al4V)was conducted by gas tungsten arc welding(GTAW)process with AlSi5 filler wire.Microstructure examination revealed that non-uniform persistent...Lap Joining of 5052 aluminum alloy(Al5052)to Ti6Al4V titanium alloy(Ti6Al4V)was conducted by gas tungsten arc welding(GTAW)process with AlSi5 filler wire.Microstructure examination revealed that non-uniform persistent reaction layer developed in Al5052/Ti6Al4V interfacial area,and the intermetallic compounds(IMCs)layer of Ti(Al,Si)3 phase formed with the partial substitution of aluminum by silicon.The thickness of IMCs layer varied from less than 1μm to more than 5μm in accordance with rise in welding current.Aluminum,silicon and titanium elements in the IMCs layer and weld zone were identified by electron probe microanalysis(EPMA).The results demonstrated that sound Al5052/Ti6Al4V joints can be achieved in the range of 50 A–60 A welding current.The maximum tensile shear strength of 293 N/mm was attained at the optimized welding parameter and the joint fractured in the weld zone.Additionally,the micro-Vickers hardness at Al5052/Ti6Al4V interface was relatively higher in comparison with that of the weld seam and Ti6Al4V base metal as a consequence of IMCs formation.展开更多
文摘Aluminum 5052(Al 5052)-stainless steel 316(SS 316)plates were explosively cladded with Al 1100,pure copper and SS 304 interlayers.The operational parameters viz.,standoff distance,explosive mass ratio(mass ratio of the explosive to the flyer plate)and inclination angle were varied and the results were presented.The advent of interlayer relocates the lower boundary of the welding window,and enhances the welding regime by 40%.A triaxial welding window,considering the influence of the third operational parameter,was developed as well.Use of interlayer transforms the continuous molten layer formed in the traditional Al 5052-SS 316 explosive clad interfaces into a smooth interface devoid or with a slender presence of intermetallic compounds.The microhardness,ram tensile and shear strengths of the interlayered clads are higher than those of the traditional explosive clads,and the maximum values are witnessed for stainless steel interlaced Al 5052-SS 316 explosive clads.
基金supported by the National Natural Science Foundation of China(51674060)the Fundamental Research Funds for the Central Universities(DUT18LAB01)the Collaborative Innovation Center of Major Machine Manufacturing in Liaoning
文摘Lap Joining of 5052 aluminum alloy(Al5052)to Ti6Al4V titanium alloy(Ti6Al4V)was conducted by gas tungsten arc welding(GTAW)process with AlSi5 filler wire.Microstructure examination revealed that non-uniform persistent reaction layer developed in Al5052/Ti6Al4V interfacial area,and the intermetallic compounds(IMCs)layer of Ti(Al,Si)3 phase formed with the partial substitution of aluminum by silicon.The thickness of IMCs layer varied from less than 1μm to more than 5μm in accordance with rise in welding current.Aluminum,silicon and titanium elements in the IMCs layer and weld zone were identified by electron probe microanalysis(EPMA).The results demonstrated that sound Al5052/Ti6Al4V joints can be achieved in the range of 50 A–60 A welding current.The maximum tensile shear strength of 293 N/mm was attained at the optimized welding parameter and the joint fractured in the weld zone.Additionally,the micro-Vickers hardness at Al5052/Ti6Al4V interface was relatively higher in comparison with that of the weld seam and Ti6Al4V base metal as a consequence of IMCs formation.
