Creep behaviour of Ti-6Al-4V produced by SLM

Cardon, Amandine; Mareau, Charles; Ayed, Yessine; Veen, Sjoerd van der; Santo, Philippe Dal

doi:10.1063/1.5112694

Cited by 4 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other authors have investigated the creep properties of the Ti6Al4V martensitic structure in as-prepared samples obtained by SLM in the temperature range between 450 and 900°C. 8,9) A change in the microstructure from a martensitic structure to a Widmanstätten structure was observed during creep tests at temperatures greater than 600°C. 8) The creep lives for the SLM specimens with the martensitic structure and forged specimens with bimodal and equiaxed structures were found to be similar.…”

Section: Introductionmentioning

confidence: 99%

“…8,9) A change in the microstructure from a martensitic structure to a Widmanstätten structure was observed during creep tests at temperatures greater than 600°C. 8) The creep lives for the SLM specimens with the martensitic structure and forged specimens with bimodal and equiaxed structures were found to be similar. 9) The creep deformation mechanism changed from dislocation-dominated creep at lower temperatures to diffusive creep deformation at higher temperatures.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Microstructure Evolution and High-Temperature Mechanical Properties of Ti–6Al–4Nb–4Zr Fabricated by Selective Laser Melting

et al. 2023

View full text Add to dashboard Cite

Ti6Al4Nb4Zr (mass%) was prepared by selective laser melting (SLM) under various conditions, and the microstructure evolution resulting from SLM processing and subsequent heat treatments was investigated. The effects of the unique SLM-induced microstructure on the high-temperature compressive strength and creep properties of the samples were then elucidated. Under rapid cooling conditions, the martensitic structure formed in a scale-like pattern, with a 100 µm in size, consistent with the laser scanning pattern. By contrast, under slow cooling conditions, the ¡/¢ lamellar structure formed in ¢ grains with a 300 µm grain size instead of in a scale-like pattern. The martensitic structure drastically changed to a Widmanstätten structure during heat treatment. The equiaxed ¡ phase also formed at the interface of the scale-like patterns. By contrast, the ¡/¢ lamellar structure did not exhibit a change in response to heat treatment. The compressive strength of the SLM samples was governed by the martensite ¡ size and the grain size, both of which depended on the cooling rate. The dominant creep deformation mechanism at 600°C and under a loading stress of 137 MPa was grain boundary sliding. The creep life depended on the grain size. The HIP treatment improved the creep life because it eliminated pores introduced by the SLM process.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microstructure Evolution and High-Temperature Mechanical Properties of Ti–6Al–4Nb–4Zr Fabricated by Selective Laser Melting

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Recent research studies on AM of Ti-6Al-4V have focused on advanced testing methods to characterize several different aspects of this alloy's behaviour including among others, the creep behaviour [17,18], the vibration fatigue behaviour [19,20], and the fatigue crack growth performance [21]. Based on this flurry of research, the processing influences on the performance of AM Ti-6Al-4V are evident and the scatter in the properties are concerning from the point of view of scaling this technology for producing components certified for use in aerospace.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Ti-6Al-4V Additively Manufactured by Electron Beam Melting with 3D Part Nesting and Powder Reuse Influences

Wanjara

Bäckman

Sikan

et al. 2022

JMMP

View full text Add to dashboard Cite

To better support the transition to more industrial uses of additive manufacturing, this study examined the use of an Arcam Q20+ industrial 3D printer for producing heavily nested Ti-6Al-4V parts with both in-specification (IS) and out of specification (OS) oxygen content in reused grade 5 powder chemistries. Both the OS and IS powder chemistries were evaluated to understand their impact on build integrity and on static and fatigue performance. The results from our evaluations showed that controlling the bed preheat temperature in the Q20+ to relatively low values (326–556 °C) was effective in limiting microstructural coarsening during the long build time and enabled adequate/balanced performance vis à vis the tensile strength and ductility. Overall, the tensile properties of the IS Ti-6Al-4V material in the as-built and machined states fully met the requirements of ASTM F2924-14. By contrast, the ductility was compromised at oxygen levels above 0.2 wt.% (OS) in Ti-6Al-4V produced by EBM. Removal of the surface layer by machining increased the consistency and performance of the IS and OS Ti-6Al-4V materials. The fatigue behaviour of the EBM Ti-6Al-4V material was in the range of properties produced by casting. Due to the strong influence of both the surface finish and oxygen content on the fatigue strength, the IS Ti-6Al-4V material exhibited the highest performance, with results that were in the range of parts that had been cast plus hot isostatically pressed.

show abstract

Creep Behavior of Ti-6Al-4Nb-4Zr Fabricated by Powder Bed Fusion Using a Laser Beam

Yamabe-Mitarai,

Inoue,

Kuroda

et al. 2024

J. Japan Inst. Metals

View full text Add to dashboard Cite

Creep behaviour of Ti-6Al-4V produced by SLM

Cited by 4 publications

References 8 publications

Microstructure Evolution and High-Temperature Mechanical Properties of Ti–6Al–4Nb–4Zr Fabricated by Selective Laser Melting

Microstructure Evolution and High-Temperature Mechanical Properties of Ti–6Al–4Nb–4Zr Fabricated by Selective Laser Melting

Microstructure and Mechanical Properties of Ti-6Al-4V Additively Manufactured by Electron Beam Melting with 3D Part Nesting and Powder Reuse Influences

Creep Behavior of Ti-6Al-4Nb-4Zr Fabricated by Powder Bed Fusion Using a Laser Beam

Contact Info

Product

Resources

About