Reactive wetting of low carbon steel by Al 4043 and 6061 alloys at 600-750 °C
Reactive wetting of low carbon steel by Al 4043 and 6061 alloys at 600-750 °C
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Al 4043 和 6061 合金在 600–750 °C 下对低碳钢的反应润湿
DOI：
10.1016/j.surfcoat.2016.06.005
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发表时间：
2016-09-25
影响因子：
5.4
通讯作者：
Chen, Jianhong
中科院分区：
文献类型：
--
作者：
Lin, Qiaoli;Jin, Peng;Chen, Jianhong
用改进的座滴法研究了两种工业级Al（4063和6061）合金在600 ~ 750 ℃高真空条件下对低碳钢的润湿性。金属间化合物的形成，这将导致被清洁表面取代的氧化表面，并进一步诱导蔓延。Al 6061/钢润湿过程中前驱膜的形成是由皮下浸润机制引起的。铝合金中不同的化学成分也导致不同的界面结构和扩展动力学。Al 6061合金中的Mg还原了氧化膜，使熔融Al更容易渗入钢基体; Al 4043合金中Si在Al/钢界面的高亲合力导致Si的偏析。Al 6061中Mg的还原反应以及Al与Fe之间的反应所引起的铺展表观活化能比Al 4043几乎大一个数量级。(C)2016爱思唯尔B. V.保留所有权利。
Wetting of low carbon steel by two industrial grades Al (4063 and 6061) alloys was investigated by the modified sessile drop method at temperatures between 600 and 750 degrees C under high vacuum. The formation of intermetallics which would lead to the replacement of the oxidized surface by a clean surface, and further induces the spreading. The formation of precursor film in the wetting of Al 6061/steel was caused by subcutaneous infiltration mechanism. The different chemical compositions in Al alloys also lead to the different interfacial structures and spreading dynamics. The Mg in Al 6061 alloy reduces the oxide film and then make molten Al is easier to infiltrate into the steel substrate; the high affinity of the Si in Al 4043 alloy at Al/steel interface which induced the segregation of Si. The reduction reaction by the Mg in Al 6061 and the reaction between Al and Fe caused the apparent activation energy for spreading is almost an order of magnitude larger than Al 4043. (C) 2016 Elsevier B.V. All rights reserved.