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铜钢爆炸焊接动态参数的研究 被引量:6
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作者 王伟策 高勇军 +2 位作者 王耀华 陈小波 王飞 《工程爆破》 2001年第1期17-19,6,共4页
研究爆炸焊接动态参数对复合质量至关重要。本文对铜复板的动态弯折角、碰撞速度等动态参数进行了研究 ,得到了铜复板飞行姿态、超声速复合中临界碰撞角和铜复板飞行速度上限 ,对试验与生产有一定的实用价值。
关键词 爆炸焊接 动态参数 铜复板 飞行姿态 超声波 临界碰撞角 温度场上限
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Interfacial behaviors of epoxy asphalt surfacing on steel decks 被引量:6
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作者 陈先华 黄卫 钱振东 《Journal of Southeast University(English Edition)》 EI CAS 2007年第4期594-598,共5页
A model for predicting the interface behavior of epoxy asphalt and steel composite beam under negative bending is developed incorporating partial interaction theory. Interfacial slips between the steel deck and the ep... A model for predicting the interface behavior of epoxy asphalt and steel composite beam under negative bending is developed incorporating partial interaction theory. Interfacial slips between the steel deck and the epoxy asphalt surfacing are included in the model with a new parameter of membrane stiffness. A series of analytical equations based on this model are derived to calculate slip and strain at the interface. Also, a numerical procedure for calculating the load responses of simply supported composite beams with concentrated force at the mid-span is established and verified with two samples. Characters of slip and strain at the interface, sensitivities of tensile stress and interface shear stress with material parameters are studied. It can be concluded that interfacial effects decrease the bending stiffness of the composite; hard and stiff bonding material is better for asphalt surfacing layer working at normal to low temperatures, and the damage of the asphalt surfacing layer will be accelerated with the damage accumulation of the bonding coat. 展开更多
关键词 epoxy asphalt surfacing steel bridge deck interfacial behavior composite beam
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Interface repairing for AA5083/T2 copper explosive composite plate by friction stir processing 被引量:4
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作者 Jian WANG Xiao-wei WANG +2 位作者 Bo LI Cheng CHEN Xiao-feng LU 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2021年第9期2585-2596,共12页
Multi-pass friction stir processing(M-FSP)was performed to repair the interface defects of AA5083/T2 copper explosive composite plates.The interface morphology and its bonding mechanism were explored.The results show ... Multi-pass friction stir processing(M-FSP)was performed to repair the interface defects of AA5083/T2 copper explosive composite plates.The interface morphology and its bonding mechanism were explored.The results show that higher rotation speed and lower transverse speed produce more heat generated during FSP.The defect-free and good mechanical properties of the AA5083/T2 copper composite plate can be obtained under the condition of the rotation speed of 1200 r/min,the transverse speed of 30 mm/min and the overlap of 2/24.Moreover,M-FSP changes the interface bonding mechanism from metallurgical bonding to vortex connection,improving the bonding strength of composite plate,which can guarantee the repairing quality of composite plates. 展开更多
关键词 friction stir processing aluminum/copper composite plate interface repairing mechanical properties
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Interfacial pressure distribution and bonding characteristics in twin-roll casting of Cu/Al clad strip 被引量:1
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作者 Jun-peng ZHANG Hua-gui HUANG +2 位作者 Jing-na SUN Ri-dong ZHAO Miao FENG 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2022年第9期2965-2978,共14页
The mechanical properties and product thickness specifications of bimetallic clad strip prepared by twin-roll casting are tightly related to the mechanical behavior of bonding interface interaction.The thermal−flow co... The mechanical properties and product thickness specifications of bimetallic clad strip prepared by twin-roll casting are tightly related to the mechanical behavior of bonding interface interaction.The thermal−flow coupled simulation and the interface pressure calculation models are established with the cast-rolling velocity as the variable.The results show that the interface temperature decreases,the interface pressure and the proportion of the thickness of the Al side increase with the decrease in cast-rolling velocity.The thinning of Cu strip mainly occurs in the backward slip zone.The higher pressure and longer solid/semi-solid contact time make the interface bonded fully,which provides favorable conditions for atomic diffusion.The inter-diffusion zone with a width of 4.9μm is attained at a cast-rolling velocity of 2.4 m/min,and the Cu side surface is nearly completely covered by aluminum.Therefore,the ductile fracture occurs on the Al side,which prevents the propagation of interface delamination cracks effectively.Meanwhile,shear effect becomes more significant at high interfacial pressure and large plastic strain,and the microstructure on Al side is composed of slender columnar crystals.Thus,the metallurgical bonding and refinement of grains on the Al side can result in higher bonding strength and tensile properties of the clad strip. 展开更多
关键词 Cu/Al clad strip cast-rolling velocity bonding interface twin-roll casting
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