Properties of closed-cell nickel-graphite composite

Ai, Liu; Welsch, G.; Mullen, Robert L.; Hazony, D.

doi:10.1007/bf02586117

Cited by 6 publications

(11 citation statements)

References 8 publications

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“…With respect to the widely used Ti-6Al-4V alloy. Liu and Welsch in 1987 studied the diffusivities of oxygen, aluminum, and vanadium in α and β titanium [33]. Zwicker observed in the plot that the self-diffusion of titanium in the β phase is about three orders of magnitude faster than the self-diffusion in the α phase [50] (see Figure 6).…”

Section: Diffusion In Titanium Metals and Alloysmentioning

confidence: 99%

“…Zwicker observed in the plot that the self-diffusion of titanium in the β phase is about three orders of magnitude faster than the self-diffusion in the α phase [50] (see Figure 6). The diffusion rates of substitutional elements in the β phase can be either slower or faster than the self-diffusion of titanium [33]. Temperature dependence of self-and temperature diffusivity in β type titanium alloy (as called from [33]).…”

Section: Diffusion In Titanium Metals and Alloysmentioning

confidence: 99%

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Self-Healing in Titanium Alloys: A Materials Science Perspective

Nnamchi¹,

Obayi²

2020

Advanced Functional Materials

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Self-healing materials (SHM’s) is an emerging class of smart materials, which are capable of autonomous or spontaneous repair of their damage under external stimuli, such as heat, light, and solvent, to the original or near original functionalities much like the biological organisms. The emergence of self-healing in metallic materials presents an exciting paradigm for an ideal combination of metallic and biological properties. The driving force behind this effort is to decrease the consequences of accidents, reduction of cost and extending the service life of metallic components. While previous reviews have focused on self-healing in polymers, composite, concrete and cementous materials, and ceramic, discussions about self-healing in metallic materials remains scarce and the survey of literatures suggests Ti-based self-healing materials known to be biocompatible in human body is rare. The present chapter examines the art of self-healing in titanium-based alloys with the scope to provide an overview of recent advancements and to highlight current problems and perspectives with respect to potential application.

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Section: Diffusion In Titanium Metals and Alloysmentioning

confidence: 99%

Section: Diffusion In Titanium Metals and Alloysmentioning

confidence: 99%

Self-Healing in Titanium Alloys: A Materials Science Perspective

Nnamchi¹,

Obayi²

2020

Advanced Functional Materials

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“…다양한 합금 원소를 첨가하여 고용강화를 이용한 타이타늄 합금의 고강도화 연구가 오랫동안 진행되어 왔다 [7][8][9][10][11][12][13][14][15][16]. 일반적으로 치환형 원소 중 1wt.% 당 고용강화가 가장 큰 원소는 Sn이며 Nb, Ta, Pd 원 소 첨가는 효과가 크지 않는 것으로 보고되고 있다 [8,12].…”

Section: 서 론unclassified

“…일반적으로 치환형 원소 중 1wt.% 당 고용강화가 가장 큰 원소는 Sn이며 Nb, Ta, Pd 원 소 첨가는 효과가 크지 않는 것으로 보고되고 있다 [8,12]. 또한 O, N, C과 같은 고용강화효과가 큰 침입형 원소첨가에 대한 고강도 타이타늄 합금 개발 보고가 많이 있다 [13][14][15][16] (Fig. 4(d) 참조).…”

Section: 서 론unclassified

The Effects of Oxygen Content on Microstructure and Mechanical Properties of Ti-Al-Fe-Si-O alloy

Bae¹,

Yeom²,

Park³

et al. 2016

Journal of the Korean Society for Heat Treatment

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The effect of the oxygen content and the annealing temperature on the tensile behavior of the Ti-1.5Al-3Fe-0.25Si-(0.1~0.5)O alloy was investigated. The tensile properties were dependent on the volume fraction of the microstructure constituents, i.e. the equixed α, equixed β and lamellar α. The results showed that the O-partitioned equixed α had a much higher strength compared to the equixed β. The strength of the lamellar α increased with increasing the annealing temperature because the O content of the lamellar α increased. Ti-1.5Al-3Fe-0.25Si-0.3O alloy annealed to 900 o C where the volume fraction of lamellar α was the highest exhibited an excellent combination of the strength (1198.5 MPa) and ductility (27.5%). The effect of the lamellar α on the ductility was discussed.

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“…[5] Studies have reported that the presence of oxygen in Ti increases the hardness and tensile strength of the material but decreases the material's ductility and fracture toughness. [6][7][8] In our previous study, we focused on V as a β stabilizer in Ti-O alloy systems. [9,10] V is also a β-isomorphous-type element and does not form any intermetallic compounds with Ti.…”

Section: Introductionmentioning

confidence: 99%

Development of α+β-type biomedical Ti–Nb alloys with high oxygen content

et al. 2020

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Ti-(5–20)Nb-(0.5–1)O alloys (mass%) were investigated for developing low-cost biomedical α+β-type Ti alloy. Ti-(5, 10, 15, 20)Nb-(0.5, 0.75, 1)O alloys (mass%) were arc-melted and forged into bars. The forged alloy bars were heat-treated at 873 to 1373 K for 3.6 ks in an Ar atmosphere and quenched in iced water. β transus (Tβ) of the Ti-Nb-O alloys decreased with increasing Nb content. An increase in the oxygen content led to an increase in Tβ. After quenching, the formation of α′ martensite was observed in Ti-5Nb-yO alloys. An increase in the Nb content to 10 mass% led to the formation of α′ and α″ martensites. A further increase in the Nb content to 15 and 20mass% resulted in the formation of more α″ martensites. The boundary temperature for the formation of α′ and α″ martensite in the Ti-10Nb-yO alloys increased with increasing oxygen content, because oxygen enhances the Nb distribution to the β phase. The ultimate tensile strength of the Ti-xNb-0.75O alloys heattreated to obtain the α-phase fraction (fα) of 0.5 was over 1000 MPa, except for the Ti-15Nb-0.75O alloy. The total elongation decreased with increasing Nb content. The Ti-5Nb-0.75O alloy exhibited excellent strength-ductility balance as a low-cost α+β-type biomedical Ti alloy.

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Properties of closed-cell nickel-graphite composite

Cited by 6 publications

References 8 publications

Self-Healing in Titanium Alloys: A Materials Science Perspective

Self-Healing in Titanium Alloys: A Materials Science Perspective

The Effects of Oxygen Content on Microstructure and Mechanical Properties of Ti-Al-Fe-Si-O alloy

Development of α+β-type biomedical Ti–Nb alloys with high oxygen content

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