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余超,谢红飙,肖宏.采用纯铁中间层热轧钛合金/不锈钢复合板显微结构和性能[J].稀有金属材料与工程(英文),2019,48(5):1631~1636.[Yu Chao,Xie Hongbiao and Xiao Hong.Mechanical properties and interfacial structure of hot-roll bonding TC4/304 composite plate using DT4 interlayer[J].Rare Metal Materials and Engineering,2019,48(5):1631~1636.]
Mechanical properties and interfacial structure of hot-roll bonding TC4/304 composite plate using DT4 interlayer
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Received:July 30, 2018  Revised:August 15, 2018
DOI:
Key words: TC4/304 composite plate  DT4  hot-roll bonding  bonding strength
Foundation item:国家自然科学基金资助(项目号51474190)
Author NameAffiliation
Yu Chao,Xie Hongbiao and Xiao Hong  
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Abstract:
      In view of the problem that TC4/304 are difficult to be directly bonded by hot-roll, a TC4/304 composite plate was prepared by hot-roll bonding in a vacuum using a DT4 interlayer. The effects of the DT4 interlayer and the bonding temperature on the mechanical properties and interfacial structure of the composite plate were investigated by scanning electron microscopy, energy spectrometry, X-ray diffractometer and tensile-shear testing. The results show that, when the intermediate layer of DT4 is added, at a 20% reduction ratio, when the bonding temperature is between 750 ℃ and 950 ℃, the shear strength of the bonding surface increases with the increase of the bonding temperature. At 950 ℃, the bonding effect is best, the shear strength of the bonding interface reaches 248 MPa. At 1 050 ℃, formation of intermetallic compounds at the interface between DT4 and TC4 decreases the bonding strength.