Prevention of Crack Formation in Electron-Beam Welded Joints of Dissimilar Metal Compounds (TiNi/Ti6Al4V)

Zilin Zhan; Yuhua Chen; Shanlin Wang; Yongde Huang; Yuqing Mao

doi:10.1007/s11041-019-00432-z

Prevention of Crack Formation in Electron-Beam Welded Joints of Dissimilar Metal Compounds (TiNi/Ti6Al4V)

作者: Zhan Z.¹, Chen Y.¹, Wang S.¹, Huang Y.¹, Mao Y.¹
隶属关系:
1. National Defense Key Disciplines Laboratory of Light Alloy Processing Science and Technology of Nanchang
期: 卷 61, 编号 5-6 (2019)
页面: 373-378
栏目: Article
URL: https://journals.rcsi.science/0026-0673/article/view/236657
DOI: https://doi.org/10.1007/s11041-019-00432-z
ID: 236657

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The microstructure, mechanical properties and element distribution in an electron-beam welded joint of dissimilar metal compounds (TiNi/Ti6Al4V) have been studied. To prevent crack formation, niobium was introduced to the compound as a filler material. The welding line preheating and electron-beam deviation toward the Ti6Al4V alloy were used. It was shown that fracturing of the welded joint occurs within the fusion zone and is characterized by a mixed ductile-brittle behavior.