Cutting mechanism and surface integrity in milling of Ti-5553 processed by selective laser melting

Grove, Thilo; Denkena, Berend; Maiß, Oliver; Krödel, Alexander; Schwab, H.; Kühn, U.

doi:10.1007/s12206-018-0936-8

Cited by 36 publications

(14 citation statements)

References 21 publications

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“…There was a slight increase in chip curl radius and a decrease in chip segmentation when machining under an XHV-adequate atmosphere. According to Grove et al, the chip curl radius is influenced by the thermal properties of the workpiece material [17]. Arrazola et al showed, by numerical simulation, that the chip curl radius significantly depends on the frictional behavior between tool and workpiece [18].…”

Section: Discussionmentioning

confidence: 99%

Towards Dry Machining of Titanium-Based Alloys: A New Approach Using an Oxygen-Free Environment

Maier

Herbst

Denkena

et al. 2020

Metals

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In the current study, the potential of dry machining of the titanium alloy Ti-6Al-4V with uncoated tungsten carbide solid endmills was explored. It is demonstrated that tribo-oxidation is the dominant wear mechanism, which can be suppressed by milling in an extreme high vacuum adequate (XHV) environment. The latter was realized by using a silane-doped argon atmosphere. In the XHV environment, titanium adhesion on the tool was substantially less pronounced as compared to reference machining experiments conducted in air. This goes hand in hand with lower cutting forces in the XHV environment and corresponding changes in chip formation. The underlying mechanisms and the ramifications with respect to application of this approach to dry machining of other metals are discussed.

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Section: Discussionmentioning

confidence: 99%

Towards Dry Machining of Titanium-Based Alloys: A New Approach Using an Oxygen-Free Environment

Maier

Herbst

Denkena

et al. 2020

Metals

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“…One of the titanium alloys that are ideal for aerospace applications is the β-Ti alloy because it has a combined property of high strength and lightweight [48]. Titanium alloys have proven to be extremely attractive and important materials in aerospace applications because of excellent combinations of outstanding corrosion and mechanical properties [39,47,49,50]. Recently, there has been increased interests in the development of additively manufactured titanium (and their alloys) parts in industries.…”

Section: Additive Manufacturing Of Titanium Alloysmentioning

confidence: 99%

Laser Based Additive Manufacturing Technology for Fabrication of Titanium Aluminide-Based Composites in Aerospace Component Applications

Raji¹,

Popoola²,

Pityana³

et al. 2021

Aerodynamics

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Titanium aluminides has the potential of replacing nickel-based superalloys in the aerospace industries because its density is almost half that of nickel-based alloys. Nevertheless, the room temperature properties (ductility) have made the wider application of this class of intermetallic alloy far from being realized. This has led to various research been carried out in adjusting the production processing and/or material through alloying, heat treatment, ingot metallurgy, powder metallurgy and most recently additive manufacturing processing. One of the additive manufacturing processing of titanium aluminide is laser engineered net shaping (LENS). It is used to produce components from powders by melting and forming on a substrate based on a computer-aided design (CAD) to shape the components. This contribution will focus on the laser processing of titanium aluminides components for aerospace applications. Also, the challenges confronting this processing techniques as well as suggested finding to solve the problems would be outlined. The objective of this work is to present an insight into how titanium aluminides components have been developed by researchers with emphasis on aerospace applications.

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“…The most common post‐processing technology that is used in combination with additive manufacturing is machining [24]. Thereby, grinding and milling are suitable subtractive processes to significantly reduce the surface roughness of additively manufactured structures [25–27].…”

Section: Introductionmentioning

confidence: 99%

Influence of microstructural defects and the surface topography on the fatigue behavior of “additively‐subtractively” manufactured specimens made of AISI 316L

Blinn

Greco

Smaga

et al. 2021

Materialwissenschaft Werkst

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As additive manufacturing offers only low surface quality, a subsequent machining of functional and highly loaded areas is required. Thus, a sound knowledge of the interrelation between the additive and subtractive manufacturing process as well as the resulting mechanical properties is indispensable. In this work, specimens were manufactured by using laser‐based powder bed fusion (L‐PBF) with substantially different sets of process parameters as well as subsequent grinding (G) or milling (M). Despite the substantially different surface topographies, the fatigue tests revealed only a slight influence of the subtractive manufacturing on the fatigue behavior, whereas the different laser‐based powder bed fusion process parameters led to pronounced changes in fatigue strength. In contrast, a significant influence of subtractive finishing on the fatigue properties of the defect‐free continuously cast (CC) reference specimens was observed. This can be explained by a dominating influence of process‐induced defects in laser‐based powder bed fusion material, which overruled the influence of surface machining. However, although both laser‐based powder bed fusion parameter sets resulted in substantial defects, one set yielded similar fatigue strength compared to continuously cast specimens.

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Cutting mechanism and surface integrity in milling of Ti-5553 processed by selective laser melting

Cited by 36 publications

References 21 publications

Towards Dry Machining of Titanium-Based Alloys: A New Approach Using an Oxygen-Free Environment

Towards Dry Machining of Titanium-Based Alloys: A New Approach Using an Oxygen-Free Environment

Laser Based Additive Manufacturing Technology for Fabrication of Titanium Aluminide-Based Composites in Aerospace Component Applications

Influence of microstructural defects and the surface topography on the fatigue behavior of “additively‐subtractively” manufactured specimens made of AISI 316L

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