Effect of hot rolling on structure and mechanical properties of Ti-6Al-4V alloy parts produced by direct laser deposition

Sokolov, P. Yu.; Алещенко, А. С.; Koshmin, A. N.; Чеверикин, В. В.; Petrovskiy, P.; Travyanov, A. Ya.; Sova, A.

doi:10.1007/s00170-020-05132-0

Cited by 11 publications

(3 citation statements)

References 28 publications

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“…Pores in materials manufactured from metal powders by different methods are a common problem that affects product functions and performance. Numerous studies that focus on the quantity [19] and size [20] of pores that occur during products DLD from Ti–6Al–4V alloy suggest the idea of low porosity of such materials not exceeding 0.3% of specimens quantity. Performed measurements of density (Table 2) also indicate low deviation (Δ) of the grown specimen's density values as compared to Ti–6Al–4V alloy density values in the as-cast condition equal to 4.43 g cm −3 [21].…”

Section: Resultsmentioning

confidence: 99%

Post-processing influence on additively produced Ti–6Al–4V alloy structure and mechanical properties

Sokolov

Koshmin

Aleschenko

et al. 2023

Materials Science and Technology

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This article studies the formation of microstructure and mechanical properties of Ti–6Al–4V alloy manufactured by direct laser deposition (DLD) as a result of post-processing. Heat treatment, hot rolling and hot isostatic pressing (HIP) of additively produced material as well as different combinations of these methods were carried out as part of the investigation. It was determined that material density increased as an average of 0.05% as a result of post-processing. Specimen's microstructure changed subtly upon post-processing, however, HIP of specimens caused widmanstatten structure decomposition and resulted in the most intense material strength deterioration. Post-processing including plastic deformation causes a decrease in material tensile strength at an average of 3% and an increase in elongation by almost 2 times.

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Section: Resultsmentioning

confidence: 99%

Post-processing influence on additively produced Ti–6Al–4V alloy structure and mechanical properties

Sokolov

Koshmin

Aleschenko

et al. 2023

Materials Science and Technology

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“…A revisitation of the above-mentioned visions of HM by Pragana et al [2] led to a modification of the original classification of Lauwers et al [1] to include innovative hybrid additive manufacturing (HAM) routes that make use of deposited metals and are based on the combination of additive and traditional manufacturing processes (Figure 1). metallurgical defects, rough surface quality and lack of dimensional accuracy [5][6][7], (ii) add flexibility and reduce the amount of material wastage in traditional metal forming processes [8][9][10], (iii) improve the metallurgical and mechanical properties of the deposited metals during and at the end of a manufacturing route [11][12][13][14] and (iv) enable the fabrication of complex tools and tool parts that cannot be manufactured by conventional subtractive methods due to technical and/or economic constraints [15]. This paper presents a new HAM route for producing collector coins that combines metal deposition by additive manufacturing with metal cutting and metal forming.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Additive Manufacturing of Collector Coins

Pragana

Rosenthal

Bragança

et al. 2020

JMMP

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The objective of this paper is to present a new hybrid additive manufacturing route for fabricating collector coins with complex, intricate contoured holes. The new manufacturing route combines metal deposition by additive manufacturing with metal cutting and forming, and its application is illustrated with an example consisting of a prototype coin made from stainless steel AISI 316L. Experimentation and finite element analysis of the coin minting operation with the in-house computer program i-form show that the blanks produced by additive manufacturing and metal cutting can withstand the high compressive pressures that are attained during the embossing and impressing of lettering and other reliefs on the coin surfaces. The presentation allows concluding that hybrid additive manufacturing opens the way to the production of innovative collector coins with geometric features that are radically different from those that are currently available in the market.

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“…The titanium Ti6Al4V alloy has the advantages of a small density, high specific strength, and excellent corrosion resistance [1,2], and is widely used in aerospace [3,4], chemical industry [5], biomedical [6,7], and other fields. However, there are some restrictions for the applications of the Ti6Al4V alloy due to its low wear resistance and poor hardness properties [8,9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Graphene Oxide on the Performance of Co-Based Coatings on Ti6Al4V Alloys by Laser Cladding

Miao

Cui

et al. 2020

Coatings

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In order to improve the hardness and wear resistance of Ti6Al4V alloys, Co-based coatings with different contents of graphene oxide (GO) were prepared on Ti6Al4V alloys by laser cladding. The effects of the graphene oxide content on the microstructure, hardness, and wear resistance were analyzed. It was found that carbides and undissolved graphene oxide films existed in the coating. Carbides contribute to grain refinement and improve the hardness of the coating. Graphene oxide films can improve the wear resistance of the coating. However, an excessive addition of graphene oxide affects the laser energy absorption of the coating. The results show that when the graphene oxide content is 0.5 wt.%, the performance of the coating is the best. Compared with the Co-based coating without graphene oxide addition, the hardness increased by 32.3%, the friction coefficient decreased by 27.2%, and the wear rate decreased by 66.5%.

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Effect of hot rolling on structure and mechanical properties of Ti-6Al-4V alloy parts produced by direct laser deposition

Cited by 11 publications

References 28 publications

Post-processing influence on additively produced Ti–6Al–4V alloy structure and mechanical properties

Post-processing influence on additively produced Ti–6Al–4V alloy structure and mechanical properties

Hybrid Additive Manufacturing of Collector Coins

Effect of Graphene Oxide on the Performance of Co-Based Coatings on Ti6Al4V Alloys by Laser Cladding

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