Zoning study on the fatigue crack propagation behaviors of a double-sided electron beam welded joint of TC4 titanium alloy with the thickness of 140 mm
Source abstract
Abstract
Abstract This study investigated fatigue crack propagation rates in the base metal (BM), heat affected zone (HAZ) and weld metal (WM) of a double-sided electron beam welded (EBW) joint of Ti alloy with a thickness of 140 mm in different layers. Firstly, this research measured fatigue crack propagation rates at different zones in each layer of the joint and drew curves thereof. The results demonstrate that the WM in the second layer of the double-sided EBW joint shows poor resistance to fatigue crack propagation. Secondly, the metallographic microstructures of different zones in different layers of the joint were observed. It is found that there are a lot of needle-shaped martensites growing in a specific direction at the HAZs in different layers of the joint. Finally, precipitates in different zones in each layer of the joint were studied by using a high-resolution scanning electron microscope (SEM). The results show that needle-shaped martensites in the WM of the joint are interlaced and present basketweave microstructures, while there are needle-shaped, lamellar martensites at the HAZs in each layer of the joint.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Welding Techniques and Residual Stresses · Advanced Welding Techniques Analysis · Hydrogen embrittlement and corrosion behaviors in metals
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (28)
Show source-provided references
1. A new material model for 2D numerical simulation of serrated chip formation when machining titanium alloy Ti–6Al–4V10.1016/j.ijmachtools.2007.10.014 ↗
2. High-performance integrated additive manufacturing with laser shock peening –induced microstructural evolution and improvement in mechanical properties of Ti6Al4V alloy components10.1016/j.ijmachtools.2019.103475 ↗
3. Effects of laser welding and post-weld heat treatment on microstructure and mechanical properties of aged Ti55531 Alloy
4. Effects of minor Zr addition on the microstructure and mechanical properties of laser welded dissimilar joint of titanium and molybdenum10.1016/j.msea.2018.10.037 ↗
5. Microstructure and mechanical properties of electron beam welded titanium alloy Ti-624610.1016/j.jmst.2016.10.007 ↗
6. Temperature-gradient induced microstructure evolution in heat-affected zone of electron beam welded Ti-6Al-4V titanium alloy10.1016/j.jmst.2019.04.004 ↗
7. Tensile and fatigue behavior of electron beam welded dissimilar joints of Ti–6Al–4V and IMI834 titanium alloys10.1016/j.msea.2015.09.107 ↗
8. Effect of micromorphology at the fatigue crack tip on the crack growth in electron beam welded Ti-6Al-4V joint10.1016/j.matchar.2016.08.029 ↗
9. Fatigue crack growth characteristics of inertia friction welded Ti17 alloy10.1111/ffe.12076 ↗
10. Fatigue property of TC4 joint with a thickness of 60 mm by electron beam welding
11. Study on microstructure and fatigue properties of electron beam welded joints of TC18 titanium alloy plate along thickness
12. Effect of electron beam welding on the microstructures and mechanical properties of thick TC4-DT alloy10.1016/j.matdes.2011.09.004 ↗
13. Microstructure, texture and mechanical properties of commercial high-purity thick titanium plates jointed by electron beam welding10.1016/j.msea.2016.09.030 ↗
14. Comparative study of fatigue and fracture in friction stir and electron beam welds of 24 mm thick titanium alloy Ti-6Al-4 V10.1111/ffe.12434 ↗
15. Effects of the heterogeneity in the electron beam welded joint on fatigue crack growth in Ti–6Al–4V alloy10.1016/j.msea.2011.09.014 ↗
16. Fatigue strength of laser-stake welded T-joints subjected to combined axial and shear loads10.1007/s40194-016-0322-z ↗
17. Fatigue assessment of local stresses at fillet welds around plate corners10.1016/j.ijfatigue.2017.01.011 ↗
18. Application of local approaches to the assessment of fatigue test results obtained for welded joints at sub-zero temperatures10.1016/j.ijfatigue.2020.105672 ↗
19. A critical analysis of crack propagation laws10.1115/1.3656900 ↗
20. Microstructural characteristics and low cycle fatigue properties at 230 °C of different weld zone materials from a 100 mm thick dissimilar weld of ultra-supercritical rotor steel10.1016/j.ijfatigue.2019.105248 ↗
21. Schijve · 2009
22. Stress state and stress-induced microstructural evolution around the crack tip of G115 steel after dwell-fatigue crack propagation10.1111/ffe.13051 ↗
23. Role of microstructure on initiation and propagation of fatigue cracks in precipitate strengthened Cu–Ni–Si alloy10.1016/j.ijfatigue.2016.01.004 ↗
24. Effects of NiAl-beta precipitates on fatigue crack propagation of INCONEL alloys 783 under time-dependent condition with various load ratios10.1016/S1359-6462(02)00503-1 ↗
25. Over-aging influenced matrix precipitate characteristics improve fatigue crack propagation in a high Zn-containing Al-Zn-Mg-Cu alloy10.1016/j.msea.2018.01.040 ↗
26. Fatigue short crack propagation behavior of selective laser melted Inconel 718 alloy by in-situ SEM study: Influence of orientation and temperature10.1016/j.ijfatigue.2020.105739 ↗
27. Study on crack dynamic propagation behavior and fracture toughness in rock-mortar interface of concrete10.1016/j.engfracmech.2019.106798 ↗
28. Investigation of fatigue crack propagation behavior of 5083 aluminum alloy under various stress ratios: Role of grain boundary and Schmid factor10.1016/j.msea.2019.138871 ↗