Study of Elastic Properies of Ti&lt;sub&gt;3&lt;/sub&gt;Al Intermetallic Compound Using the &lt;i&gt;Ab Initio&lt;/i&gt; Calculation

Soufen, Carlos Alberto; Campos, Marcelo Capella de; Pintão, Carlos Alberto Fonzar; Imaizumi, Momotaro

doi:10.4028/www.scientific.net/msf.805.690

Cited by 2 publications

(1 citation statement)

References 10 publications

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“…Elastic modulus of intermetallic layer is close to that of interfacial region with the range of 130145 GPa, similar to that of bulk Ti 3 Al. 18) While, elastic modulus of Ti layer is 102119 GPa, lower than that of bulk Ti (138 GPa). 19) For different locations away from the interface, the elastic modulus fluctuates within a narrow range for both intermetallic and Ti layers due to the component change as a result of diffusion of Al.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Mechanical Properties and Fracture Behavior of Titanium-Aluminum/Titanium Micro-Laminate Sheet Deposited by EB-PVD

Wang

2015

Mater. Trans.

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A 110 µm thick micro-laminate sheet comprising 14 layers of TiAl/Ti 3 Al two phase compound and 15 layers of Ti was prepared by electron beam physical vapor deposition (EB-PVD), and its microstructures and mechanical properties were characterized. Results show that the hardness of interfacial region is about 7.029 GPa, higher than that of either component layer. After densification, room-temperature tensile strength and elongation are improved compared to single Ti-Al compound sample, reaching 656.89 MPa and 2.92%, respectively. Its tensile curve presents a distinct jagged feature. High-temperature tensile strength exhibits an abnormal increase with temperature, exceeding 440 MPa at 1023 K. The presence of Ti layers will lead to cracks stagger along the inter-laminar interface or the crack deflection and the micro-bridge connection caused by Ti layers, due to the TiAl-Ti 3 Al/¡-Ti micro-laminate displaying a fine characteristic of delayed fracture.

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Section: Mechanical Propertiesmentioning

confidence: 99%

Mechanical Properties and Fracture Behavior of Titanium-Aluminum/Titanium Micro-Laminate Sheet Deposited by EB-PVD

Wang

2015

Mater. Trans.

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Visualization of the damage evolution for Ti–3Al–2Mo–2Zr alloy during a uniaxial tensile process using a microvoids proliferation damage model

Ying¹,

Zhao

Quan

2021

High Temperature Materials and Processes

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Understanding the damage evolution of alloys during a plastic deformation process is significant to the structural design of components and accident prevention. In order to visualize the damage evolution in the plastic deformation of Ti–3Al–2Mo–2Zr alloy, a series of uniaxial tensile experiments for this alloy were carried out under the strain rates of 0.1–10 s−1 at room temperature, and the stress–strain curves were achieved. On the other hand, the finite element (FE) models of these uniaxial tensile processes were established. A microvoids proliferation model, Gurson–Tvergaard–Needleman (GTN) damage model, was implanted into the uniaxial tensile models, and the simulated stress–strain curves corresponding to different GTN parameter combinations were obtained. Based on the simulated and experimental stress–strain curves, the GTN parameters of this alloy were solved by response surface methodology (RSM). The solved GTN parameters suggest that higher strain rate can enhance the proliferation and coalescence of microvoids. Furthermore, the uniaxial tensile tests over different strain rates were simulated using the solved GTN parameters. Then, the damage processes were visualized and evaluated. The result shows that the degradation speed of this alloy is slow at the initial stage of the tensile deformation and then accelerates once the voids volume fraction reaches a critical value.

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Study of Elastic Properies of Ti<sub>3</sub>Al Intermetallic Compound Using the <i>Ab Initio</i> Calculation

Cited by 2 publications

References 10 publications

Mechanical Properties and Fracture Behavior of Titanium-Aluminum/Titanium Micro-Laminate Sheet Deposited by EB-PVD

Mechanical Properties and Fracture Behavior of Titanium-Aluminum/Titanium Micro-Laminate Sheet Deposited by EB-PVD

Visualization of the damage evolution for Ti–3Al–2Mo–2Zr alloy during a uniaxial tensile process using a microvoids proliferation damage model

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