Fatigue of Ti-6Al-4V

Hosseini, Shabnam

doi:10.5772/45753

Cited by 35 publications

(18 citation statements)

References 14 publications

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“…This results in a q value equal to 0.048. A low notch sensitivity of the wrought Ti-6Al-4V alloy was already observed by Hosseini [26]. She justified such alloy behavior through alpha Hexagonal Close Packed (HCP) crystal lattice characteristics.…”

Section: Discussionmentioning

confidence: 63%

“…where K f is the fatigue notch factor (K f = ∆σ smooth A /∆σ V−nothc A ) and K t is the stress concentration factor defined by maximum local stress to nominal stress ratio (K t = σ max /σ nom ) [26]. The nominal stress is defined as the mean stress across the reduced cross-section of the specimen in the presence of the notch.…”

Section: Discussionmentioning

confidence: 99%

“…) [26]. The nominal stress is defined as the mean stress across the reduced cross-section of the specimen in the presence of the notch.…”

Section: Discussionmentioning

confidence: 99%

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Fatigue Assessment of Ti–6Al–4V Circular Notched Specimens Produced by Selective Laser Melting

Razavi

Ferro

Berto

2017

Metals

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Additive manufacturing (AM) offers the potential to economically produce customized components with complex geometries in a shorter design-to-manufacture cycle. However, the basic understanding of the fatigue behavior of these materials must be substantially improved at all scale levels before the unique features of this rapidly developing technology can be used in critical load bearing applications. This work aims to assess the fatigue strength of Ti-6Al-4V smooth and circular notched samples produced by selective laser melting (SLM). Scanning Electron Microscopy (SEM) was used to investigate the fracture surface of the broken samples in order to identify crack initiation points and fracture mechanisms. Despite the observed fatigue strength reduction induced by circular notched specimens compared to smooth specimens, notched samples showed a very low notch sensitivity attributed both to hexagonal crystal lattice characteristics of tempered alpha prime grains and to surface defects induced by the SLM process itself.

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Section: Discussionmentioning

confidence: 63%

Section: Discussionmentioning

confidence: 99%

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Fatigue Assessment of Ti–6Al–4V Circular Notched Specimens Produced by Selective Laser Melting

Razavi

Ferro

Berto

2017

Metals

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“…One of the methods to increase the corrosion resistance is formation of stable oxide surface layer on biomaterial. Furthermore, it has been discovered that the factors which increase the tensile strength, can also improve the fatigue strength as well (Hosseini, 2012). In addition, in 2013, "effect of microstructure on the fatigue properties of Ti-6Al-4V Titanium alloys" is recommended by Wu et al (2013).…”

Section: Introductionmentioning

confidence: 99%

Cycle numbers to failure for magnesium and its alloys in human body fluid

Alijani¹,

Anvari²

2018

J. Chem. Eng. Mater. Sci.

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The fundamental goal of this research is to provide a method to predict the fatigue life of Magnesium and its alloys in human body fluid environment. Estimation of fatigue life of Magnesium and its alloys in human body fluid environment can help doctors and patients to choose the best biomaterial for implantation surgery. This fact is true due to the reason that based on the fatigue life of these materials it can be easily predicted how long these biomaterials can last in human body. However, this is due to the reason that Magnesium and its alloys may dissolve in human body by the end of their fatigue life. As a result, no second surgery may be required for the patients and doctors. This study aims to present a method to determine the fatigue life of Magnesium and its alloys in human body fluid. The results can help to select the best option of biomaterials.

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“…Hoseini [11] reported that the presence of Hexagonal Close Packed (HCP) structure in alfa phase of the Ti-6Al-4V alloy results in lower notch sensitivity of this material. It is worth mentioning that the slip planes in HCP crystal lattice are all parallel to each other, a condition which is different from the material with Face Central Cubic (FCC) or Body Central Cubic (BCC) lattices.…”

Section: Fig 2 Geometries Of Smooth and Notched Specimens And Builtmentioning

confidence: 99%

Fatigue assessment of semi-circular notched specimens produced by Laser Engineered Net Shaping method

et al. 2018

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Abstract. As a primary failure mechanism, fatigue failure of additively manufactured metallic parts has attracted considerable attention in both aerospace and biomedical applications. According to some specific design requirements, the majority of engineering components and structures contain notches of different shapes. Due to the intensive stresses around the notches, they are prone to crack nucleation. In this research, LENS (Laser Engineered Net Shaping) technology is used to fabricate Ti-6Al-4V semi-circular notched specimens. The fatigue analyses were performed to contribute to the fundamental understanding of the mechanical/cracking behaviour of additively manufactured LENS Ti-6Al-4V specimens weakened by semi-circular notches and subject to fatigue loading.

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Fatigue of Ti-6Al-4V

Cited by 35 publications

References 14 publications

Fatigue Assessment of Ti–6Al–4V Circular Notched Specimens Produced by Selective Laser Melting

Fatigue Assessment of Ti–6Al–4V Circular Notched Specimens Produced by Selective Laser Melting

Cycle numbers to failure for magnesium and its alloys in human body fluid

Fatigue assessment of semi-circular notched specimens produced by Laser Engineered Net Shaping method

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