Nanostructure of immiscible Mg-Fe dissimilar weld without interfacial intermetallic transition layer
Nanostructure of immiscible Mg-Fe dissimilar weld without interfacial intermetallic transition layer
复制标题
无界面金属间过渡层的难混溶Mg-Fe异种材料焊缝的纳米结构
DOI：
10.1016/j.matdes.2015.12.072
复制
发表时间：
2016-02-15
影响因子：
8.4
通讯作者：
Zhou, Y. Norman
中科院分区：
文献类型：
--
作者：
Liu, Lei;Zou, Guisheng;Zhou, Y. Norman
不混相纯Mg-Fe异种材料焊接时没有金属间过渡层，而金属间过渡层是任意大晶格失配的不混相偶联所必需的。焊缝界面的纳米结构显示了一种新的异种焊接机制：在焊缝界面处形成一层Mg纳米晶粒层，将大块Mg和Fe晶粒结合在一起。讨论了镁纳米颗粒层的形成及其在焊接中的作用。同时对具有界面金属间过渡层的Mg-Fe异种焊缝进行了研究。比较了有无金属间层的两种焊缝的纳米结构。(C) 2015 Elsevier Ltd.版权所有。
The immiscible pure Mg-Fe dissimilar materials were welded without interfacial intermetallic transition layer, which is normally necessary to the immiscible couple with arbitrary large lattice mismatch. The nanostructure of the weld interface demonstrates a new mechanism of dissimilar welding: a Mg nano grain layer at the weld interface bonded bulk Mg and Fe grains. The Mg nano grain layer formation and its role on welding are discussed. Meanwhile, Mg-Fe dissimilar weld with interfacial intermetallic transition layer was studied. The nanostructure of the two types of weld with and without intermetallic layer is compared. (C) 2015 Elsevier Ltd. All rights reserved.