The microstructure and tensile properties of additively manufactured Ti–6Al–2Zr–1Mo–1V with a trimodal microstructure obtained by multiple annealing heat treatment

Zhang, Sheng; Zhang, Yuqi; Zou, Zhiyi; Shi, Yusheng; Zang, Yong

doi:10.1016/j.msea.2021.142241

Cited by 30 publications

(14 citation statements)

References 56 publications

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“…Finally, Tan et al [ 333 ] reported an interesting point of view regarding the crack initiation and propagation into a bimodal and/or trimodal microstructure ( Figure 61 ). In this scenario, the trimodal microstructure is a structure formed by globular primary α p phase, lamellar α p phase, and secondary α s phase + β which is formed by the β-phase [ 334 , 335 ].…”

Section: L-pbfed Ti6al4v: Mechanical Propertiesmentioning

confidence: 99%

Additive Manufacturing of AlSi10Mg and Ti6Al4V Lightweight Alloys via Laser Powder Bed Fusion: A Review of Heat Treatments Effects

Ghio

Cerri

2022

Materials

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Laser powder bed fusion (L-PBF) is an additive manufacturing technology that is gaining increasing interest in aerospace, automotive and biomedical applications due to the possibility of processing lightweight alloys such as AlSi10Mg and Ti6Al4V. Both these alloys have microstructures and mechanical properties that are strictly related to the type of heat treatment applied after the L-PBF process. The present review aimed to summarize the state of the art in terms of the microstructural morphology and consequent mechanical performance of these materials after different heat treatments. While optimization of the post-process heat treatment is key to obtaining excellent mechanical properties, the first requirement is to manufacture high quality and fully dense samples. Therefore, effects induced by the L-PBF process parameters and build platform temperatures were also summarized. In addition, effects induced by stress relief, annealing, solution, artificial and direct aging, hot isostatic pressing, and mixed heat treatments were reviewed for AlSi10Mg and Ti6AlV samples, highlighting variations in microstructure and corrosion resistance and consequent fracture mechanisms.

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Section: L-pbfed Ti6al4v: Mechanical Propertiesmentioning

confidence: 99%

Additive Manufacturing of AlSi10Mg and Ti6Al4V Lightweight Alloys via Laser Powder Bed Fusion: A Review of Heat Treatments Effects

Ghio

Cerri

2022

Materials

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“…Other than that multiple layers result in multiple heat treatment to the affected area which lead to grain coarsening and bigger grain size [22].…”

Section: Microstructural and Chemical Composition Investigationmentioning

confidence: 99%

Effect of the Welding Filler Material on the Mechanical and Corrosive Behavior of Böhler W350 ISOBLOC Hot Forming Tool Steel

Szovák

Korsós²,

Kemény³

et al. 2023

Period. Polytech. Mech. Eng.

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In this study, the effects of different welding filler materials were examined in the case of repair welding of pressure infiltration casting tool made out of Böhler W350 ISOBLOC hot forming tool steel. Three additional welding filler materials were used: Böhler W350 ISOBLOC (same as the raw material), Böhler W300 ISOBLOC and Anviloy® 1150 tungsten alloy. The welds were created with TIG welding method. The used welding filler material has an impact on the mechanical and corrosive properties of the tool. The hardness of the weld was measured to determine its resistance against mechanical stress. The corrosion rate was measured because molten aluminium corrodes workpieces due to its high chemical activity. It was concluded that a single-pass weld corrosion speed is 0.142 ± 0.010 mm/year while a weld containing multiple layers and passes has the corrosion speed of 0.069 ± 0.005 mm/year which is approximately 48% of the corrosion speed of the single-pass weld. Furthermore, the hardness of a weld made with W350 welding filler material significantly drops in the upper layers of the weld, down to 273 HV1 while the hardness of the base material is 495 ± 8 HV1. The results show that the multiple layers and passes welds have better corrosion resistance and less hardness than the single-pass weld.

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“…To accurately define the β-transus of the investigated alloy, differential scanning calorimetry (DSC, TA Instruments, New Castle, Germany, SDT-Q600) was performed by heating the as-built sample to 1100 • C at a heating rate of 10 • C/min, followed by furnace cooling to room temperature. Based on critical temperatures obtained from DSC analysis and literature [17,20], six different temperatures, spread in three representative temperature ranges, were chosen as heat treatment temperatures investigated in this study (Table 2). A heating rate of 10 • C/min was applied for all the conducted heat treatments, followed by air cooling (AC).…”

Section: L-pbf Process and Heat Treatmentmentioning

confidence: 99%

“…As the result, while Ti-6Al-4V is commonly used as a structural material in the aerospace industry, TA15 is widely applied to the load-bearing components in aircraft and engines, which operate at high temperatures for extended periods [16]. Lately, L-PBF has been successfully adopted to process TA15 alloy [17,18]. Wu et al [19] report that TA15 produced via L-PBF could exhibit excellent tensile strength both at room and elevated temperature, due to grain refinement and nano-scale twins.…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment on the Microstructure and Mechanical Properties of Additive Manufactured Ti-6.5Al-2Zr-1Mo-1V Alloy

Zhang

et al. 2022

Materials

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Ti-6.5Al-2Zr-1Mo-1V (TA15), widely used in the aerospace industry, is a medium- to high-strength, near-α titanium alloy with high aluminium equivalent value The TA15 fabricated via laser powder bed fusion (L-PBF) normally presents a typical brittle appearance in as-built status, with high strength and low ductility. In this study, the microstructure and properties of L-PBF TA15 were engineered by various heat treatments below the β-transus temperature (1022 °C). After heat treatment, the original acicular martensite gradually transforms into a typical lamellar α + β dual-phase structure. Withannealing temperature increases, the lamellar α phase thickened with a decreased aspect ratio. Globularisation of the α grain can be noticed when annealing above 800 °C, which leads to a balance between strength and ductility. After heat treatment between 800–900 °C, the desired combination of strength and ductility can be achieved, with elongation of about 12.5% and ultimate tensile strength of about 1100 Mpa.

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The microstructure and tensile properties of additively manufactured Ti–6Al–2Zr–1Mo–1V with a trimodal microstructure obtained by multiple annealing heat treatment

Cited by 30 publications

References 56 publications

Additive Manufacturing of AlSi10Mg and Ti6Al4V Lightweight Alloys via Laser Powder Bed Fusion: A Review of Heat Treatments Effects

Additive Manufacturing of AlSi10Mg and Ti6Al4V Lightweight Alloys via Laser Powder Bed Fusion: A Review of Heat Treatments Effects

Effect of the Welding Filler Material on the Mechanical and Corrosive Behavior of Böhler W350 ISOBLOC Hot Forming Tool Steel

Effect of Heat Treatment on the Microstructure and Mechanical Properties of Additive Manufactured Ti-6.5Al-2Zr-1Mo-1V Alloy

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