Effect of Heat Treatment on the Mechanical Properties of a 3 mm Commercially Pure Titanium Plate (CP-Ti Grade 2)

Mpumlwana, D.; Msomi, Velaphi; Fourie, C.J.S.

doi:10.1155/2021/6646588

Cited by 4 publications

(3 citation statements)

References 39 publications

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“…Increasing the hardness of jaw implants can refer to basic material science, where the heat treatment process can be used to increase the hardness of a material (Callister and Wiley, 1980). The effect of the heat treatment process has been widely studied on titanium materials (da Rocha et al, 2006;Venkatesh, Chen and Bhole, 2009;Reda, Nofal and Hussein, 2013;Catherine and Hamid, 2018;Arab, Chen and Guo, 2019;Mpumlwana, Msomi and Fourie, 2021;Jian et al, 2022). Reda, et al, have investigated the effect of single and duplex stage heat treatment (SSHT and DSHT) on the material hardness of the titanium alloy cast (Reda, Nofal and Hussein, 2013).…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment Temperature on Hardness of Jaw Implant Produced from EDM Die-Sinking Process

M. F. R. Suharyanto,

Yani Kurniawan

2024

ASIIMETRIK

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Hardness is the main problem in making jaw implants using the die-sinking EDM process. Heat treatment can increase the hardness of jaw implants resulting from the EDM process. This research investigates the influence of temperature during the heat treatment process on the hardness of jaw implants produced from the EDM process. Heat treatment uses a quenching process. The quenching temperatures used were 940, 950, and 960 ºC, while the holding time was 30 minutes. The aging temperature is 550 ºC. The research results show that the greater the quenching temperature, the greater the increase in hardness. The hardness of the white layer reaches 713 VHN when using a temperature of 960 ºC. Meanwhile, the hardness of the inner jaw implant reaches 354 VHN.

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Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment Temperature on Hardness of Jaw Implant Produced from EDM Die-Sinking Process

M. F. R. Suharyanto,

Yani Kurniawan

2024

ASIIMETRIK

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“…Prolonged exposure(600s) of the titanium alloy to the aging temperature above 200 °C resulted in a complete loss of ductile property with increased yield stress value up to 1300 MPa. Mpumlwana et al [12] reported that mechanical properties of Ti-6Al-4V alloy had been significantly affected by heat-treatment duration. The authors tested the alloys at a constant temperature of 900 °C for different durations such as 30 min 60 min, and 90 min.…”

Section: Introductionmentioning

confidence: 99%

Effect of thermal cycling on mechanical and microstructural properties of heat-treated Ti-6Al-4V alloy

Teja

Manikandan

Ayyagari³

2022

Mater. Res. Express

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Titanium (Ti-6Al-4V) is an α+β phase-field alloy utilized in many industries due to its high strength-to-weight ratio and near-net shaping capability. Solution treated & aging, and stress relief annealing processes were performed on the samples to increase the strength and % of elongation. The heat-treated samples then thermally cycled for 500 cycles, 1000 cycles, and 1500 cycles to evaluate the microhardness and tensile properties. The presence of martensite and α2 precipitates in the thermally cycled samples was confirmed by scanning electron microscopy (SEM) and X-ray diffraction analysis (XRD). In this investigation, at 1000 thermal cycles, all specimens show improvement in both hardness and strength when compared within the cycles. Solution-treated and aging (STA), stress relief annealing (SRA), and without any heat-treatment (WHT) processes have their highest hardness values recorded for 1000 thermal cycles, and the values are 471 HV0.5, 381 HV0.5, and 374.6HV0.5, respectively. For the SRA process, ultimate tensile strength (UTS) of 925 MPa and yield strength (YS) of 896 MPa have resulted in 1000 cycles. Similarly, at 1000 thermal cycle WHT processed samples yielded UTS of 920 MPa and YS of 885 MPa. STA process samples that are heat-treated for 1000 thermal cycles have better strength properties than SRA and WHT and had a UTS of 1530MPa and YS of 1420MPa. From a ductility point of view, a maximum elongation of 29% for the STA process has resulted. Compared to forged titanium alloy (base metal), an increase of 31% elongation and 41% ultimate tensile strength for solution treated and aging process at 1000 cycles has resulted in this investigation.

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“…Annealing reduces tensile strength but improves the ductility of the titanium alloy (Mpumlwana et al , 2021). This change in tensile properties is due to the decomposition of α' into α + β microstructure and grain-growth expressed by the Hall–Petch relationship, according to which as grain size increases, tensile strength decreases (Davari et al , 2017).…”

Section: Introductionmentioning

confidence: 99%

Effect of annealing on physio-mechanical properties and laser parameter selection of additively manufactured Ti6Al4V orthopedic implants

Gaur

Sagar

Suryawanshi

et al. 2022

RPJ

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Purpose Ti6Al4V alloy patient-customized implants (PCI) are often fabricated using laser powder bed fusion (LPBF) and annealed to enhance the microstructural, physical and mechanical properties. This study aims to demonstrate the effects of annealing on the physio-mechanical properties to select optimal process parameters. Design/methodology/approach Test samples were fabricated using the Taguchi L9 approach by varying parameters such as laser power (LP), laser velocity (LV) and hatch distance (HD) to three levels. Physical and mechanical test results were used to optimize the parameters for fabricating as-built and annealed implants separately using Grey relational analysis. An optimized parameter set was used for fabricating biological test samples, followed by animal testing to validate the qualified parameters. Findings Two optimized sets of process parameters (LP = 100 W, LV = 500 mm/s and HD = 0.08 mm; and LP = 300 W, LV = 1,350 mm/s and HD = 0.08 mm) are suggested suitable for implant fabrication regardless of the inclusion of annealing in the manufacturing process. The absence of any necrosis or reaction on the local tissues after nine weeks validated the suitability of the parameter set for implants. Practical implications To help PCI manufacturers in parameter selection and to exclude annealing from the manufacturing process for faster implant delivery. Originality/value To the best of the authors’ knowledge, this is probably a first attempt that suggests LPBF parameters that are independent of inclusion of annealing in implant fabrication process.

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Effect of Heat Treatment on the Mechanical Properties of a 3 mm Commercially Pure Titanium Plate (CP-Ti Grade 2)

Cited by 4 publications

References 39 publications

Effect of Heat Treatment Temperature on Hardness of Jaw Implant Produced from EDM Die-Sinking Process

Effect of Heat Treatment Temperature on Hardness of Jaw Implant Produced from EDM Die-Sinking Process

Effect of thermal cycling on mechanical and microstructural properties of heat-treated Ti-6Al-4V alloy

Effect of annealing on physio-mechanical properties and laser parameter selection of additively manufactured Ti6Al4V orthopedic implants

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