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Inhomogeneous Fatigue Characteristics of Welded Ti-6Al-4V Thick Plate by the Electron Beam Method
Wang, Haiyan; Zeng, Caiyou; Zhang, Yupeng; Zhou, Yu; Dong, Chunlin
2020-04-25
Source PublicationMETALS AND MATERIALS INTERNATIONAL
AbstractTo recognize the specific safety problem brought by an increasing thickness, the layered microstructures, fatigue properties and the fractographies of a 100 mm-thick Ti-6Al-4V joint via electron beam welding were investigated. The results show that the seam zone has textural and mechanical heterogeneities in the layered thickness regions. The mid layer has the lowest fatigue life and different fracture-position tendency (more broken in seam zone) due to the hybrid influences of the grain size and the phase fraction of alpha ' and beta phases. The fatigue cracks initiate on the surfaces of fatigue specimens and grow in the transgranular fracture mode. The fatigue deformation mode is adapted to the planar-slip mechanism with different degrees of dislocation blocking in distinct layers, which results in a "mid-layer favorite" crack initiation trend. Moreover, the mid layer has the highest crack propagation rate either. Graphic
DOI10.1007/s12540-020-00719-4
WOS IDWOS:000528415300001
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/82937
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Wang, Haiyan,Zeng, Caiyou,Zhang, Yupeng,et al. Inhomogeneous Fatigue Characteristics of Welded Ti-6Al-4V Thick Plate by the Electron Beam Method[J]. METALS AND MATERIALS INTERNATIONAL,2020.
APA Wang, Haiyan,Zeng, Caiyou,Zhang, Yupeng,Zhou, Yu,&Dong, Chunlin.(2020).Inhomogeneous Fatigue Characteristics of Welded Ti-6Al-4V Thick Plate by the Electron Beam Method.METALS AND MATERIALS INTERNATIONAL.
MLA Wang, Haiyan,et al."Inhomogeneous Fatigue Characteristics of Welded Ti-6Al-4V Thick Plate by the Electron Beam Method".METALS AND MATERIALS INTERNATIONAL (2020).
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