NDLI: Low cyclic fatigue behavior of electron-beam-welded Ti–6Al

Content Provider	Springer Nature Link
Author	Qi, Hong Yu Ma, Li Qiang Li, Shao Lin Yang, Xiao Guang
Copyright Year	2015
Abstract	The low cycle fatigue (LCF) tests were carried out using symmetrical cyclic loading under total strain amplitude control conditions. The present paper is devoted to investigating the cyclic deformation response of Ti–6Al–4V titanium and the electron-beam-welded (EBW) joint in the following aspects, i.e., cyclic deformation behavior, fatigue life and fatigue fracture behavior. The results show that the softening of the joint is significant at larger strain ranges, while not obvious at smaller strain ranges. The joint shows shorter fatigue life at larger strain ranges and equivalent fatigue life at smaller strain ranges compared with Ti–6Al–4V base metal. A fatigue crack of the joint not only originates at the surface or subsurface, but also at defects in the fusion zone (FZ). The crack propagation zone of Ti–6Al–4V base metal shows ductile fracture mechanism, while the joint shows brittle fracture mechanism. In all the fatigue fracture zones many dimples appear, showing the typical ductile fracture.
Starting Page	230
Ending Page	234
Page Count	5
File Format	PDF
ISSN	10010521
Journal	Rare Metals
Volume Number	35
Issue Number	3
e-ISSN	18677185
Language	English
Publisher	Nonferrous Metals Society of China
Publisher Date	2015-06-30
Publisher Place	Beijing
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ti–6Al–4V titanium alloy Electron beam welding Low cyclic fatigue Fracture analysis Metallic Materials Nanotechnology Ceramics, Glass, Composites, Natural Methods Surfaces and Interfaces, Thin Films Inorganic Chemistry Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Metals and Alloys Physical and Theoretical Chemistry Condensed Matter Physics

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