Study on strengthening mechanism of Ti/Cu electron beam welding

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dc.contributor.authorGuo, Shun
dc.contributor.authorZhou, Qi
dc.contributor.authorPeng, Yong
dc.contributor.authorXu, Xiangfang
dc.contributor.authorDiao, Chenglei
dc.contributor.authorKong, Jian
dc.contributor.authorLuo, TianYuan
dc.contributor.authorWang, Kehong
dc.contributor.authorZhu, Jun
dc.date.accessioned2017-03-08T14:17:12Z
dc.date.available2017-03-08T14:17:12Z
dc.date.issued2017-02-20
dc.description.abstractWelding-brazing method is widely used for dissimilar metals welding. However, it is becoming increasingly difficult to further improve the connection strength by controlling the formation of the transition layer. In this study, an innovative welding method referred to as adjacent welding was addressed, which greatly improved the tensile strength of Ti/Cu dissimilar joint. The strength of new joint could reach up to 89% that of copper base metal, compared to the use of a traditional welding-brazing method which strength coefficient is within the limit of 70%. In order to determine the strengthening mechanism of adjacent welding, optical microscopy, SEM, EDS and XRD were applied for the analysis of microstructure and phase structure. Furthermore, tensile strength was also tested. The results show that due to the process of remelting and reverse solidification of intermetallic compounds (IMCs) layer, a less complex and thinner IMCs layer was formed and TiCu (553 HV) with high embrittlement existing in the front of titanium substrate was changed into Ti2Cu (442 HV). Performances of joints were optimized by these changes. An interpretation module was presented for the mechanism.en_UK
dc.identifier.citationGuo S, Zhou Q, Peng Y, et al., (2017) Study on strengthening mechanism of Ti/Cu electron beam welding. Materials and Design, Volume 121, May 2017, pp 51-60en_UK
dc.identifier.issn0264-1275
dc.identifier.urihttp://dx.doi.org/10.1016/j.matdes.2017.02.054
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/11582
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectWelding-brazingen_UK
dc.subjectAdjacent weldingen_UK
dc.subjectDissimilar welding jointsen_UK
dc.subjectIntermetallic compoundsen_UK
dc.titleStudy on strengthening mechanism of Ti/Cu electron beam weldingen_UK
dc.typeArticleen_UK

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