Results 181 to 190 of about 435,500 (212)
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2023
โลหะไทเทเนียมผสม ถูกนำมาวิจัยพัฒนาการใช้งานในทางการแพทย์และทันตกรรมอย่างแพร่หลาย โดยนิยมใช้กระบวนการหล่อแบบขี้ผึ้งหายในการขึ้นรูปเนื่องจากสามารถออกแบบได้ง่ายและได้ชิ้นงานใกล้เคียงกับที่ออกแบบไว้ แต่การผลิตชิ้นงานด้วยกระบวนการนี้มักมีโครงสร้างแบบหนึ่งที่เรียกว่า ชั้นของแอลฟาเคส ซึ่งมีความแข็งสูงและมีความเปราะ ไม่เหมาะกับการนำไปใช้งาน งานวิจัยนี้ได้อาศ ...
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โลหะไทเทเนียมผสม ถูกนำมาวิจัยพัฒนาการใช้งานในทางการแพทย์และทันตกรรมอย่างแพร่หลาย โดยนิยมใช้กระบวนการหล่อแบบขี้ผึ้งหายในการขึ้นรูปเนื่องจากสามารถออกแบบได้ง่ายและได้ชิ้นงานใกล้เคียงกับที่ออกแบบไว้ แต่การผลิตชิ้นงานด้วยกระบวนการนี้มักมีโครงสร้างแบบหนึ่งที่เรียกว่า ชั้นของแอลฟาเคส ซึ่งมีความแข็งสูงและมีความเปราะ ไม่เหมาะกับการนำไปใช้งาน งานวิจัยนี้ได้อาศ ...
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Materialwissenschaft und Werkstofftechnik, 1982
AbstractLow‐cycle‐fatigue texts in vacuum and air were performed. Under cyclic loading the Ti‐6Al‐4V showed both cyclic hardening and cyclic softening depending on heat treatment, stress amplitude, and microstructure. Plastic deformation of the β‐phase in the unaged condition due to stress induced martensitic transformation caused cyclic hardening ...
M. A. Däubler, G. Lütjering
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AbstractLow‐cycle‐fatigue texts in vacuum and air were performed. Under cyclic loading the Ti‐6Al‐4V showed both cyclic hardening and cyclic softening depending on heat treatment, stress amplitude, and microstructure. Plastic deformation of the β‐phase in the unaged condition due to stress induced martensitic transformation caused cyclic hardening ...
M. A. Däubler, G. Lütjering
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Journal of Alloys and Compounds, 2009
Abstract Air oxidation behaviour of a Ti–6Al–4V alloy was examined over the temperature range of 600–800 °C for different time intervals ranging between 0.5 and 72 h. In addition to the determination of the oxidation kinetics by weight gain measurements, oxygen diffusion zone (ODZ) depth and hardness measurements were conducted on the cross-sections ...
Hasan Guleryuz, Huseyin Cimenoglu
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Abstract Air oxidation behaviour of a Ti–6Al–4V alloy was examined over the temperature range of 600–800 °C for different time intervals ranging between 0.5 and 72 h. In addition to the determination of the oxidation kinetics by weight gain measurements, oxygen diffusion zone (ODZ) depth and hardness measurements were conducted on the cross-sections ...
Hasan Guleryuz, Huseyin Cimenoglu
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2020
?? ???????????? ?????????????? ????????????, ?????????????????? ?? ???????????????? ???????????????? ???? ???????????? Ti???6Al???4V, ???????????????????? ???? ?????????????????????? ???????????????????????? ?????????????????? ?? ????????????????????-???????????????? ???????????????????? ???????????????????????? ???????????????????????? ?????????????? ?
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?? ???????????? ?????????????? ????????????, ?????????????????? ?? ???????????????? ???????????????? ???? ???????????? Ti???6Al???4V, ???????????????????? ???? ?????????????????????? ???????????????????????? ?????????????????? ?? ????????????????????-???????????????? ???????????????????? ???????????????????????? ???????????????????????? ?????????????? ?
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2014
It is demonstrated that titanium and its alloys can be laser welded in an air atmosphere when they are cathodically protected under a flux of a high-temperature molten salt. This enables the development of a new titanium welding process that does not require shielding the work piece with an inert gas.
Carsten Schwandt +2 more
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It is demonstrated that titanium and its alloys can be laser welded in an air atmosphere when they are cathodically protected under a flux of a high-temperature molten salt. This enables the development of a new titanium welding process that does not require shielding the work piece with an inert gas.
Carsten Schwandt +2 more
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Microplasticity in HCF of Ti–6Al–4V
International Journal of Fatigue, 2001Abstract Previous research has shown that Ti–6Al–4V exhibits pronounced stress ratio effects under high cycle fatigue (HCF) loading. At high stress ratios ( R >0.7), a transition of failure mode occurs from traditional surface fatigue crack initiation and growth to bulk-dominated damage initiation and coalescence of multiple microcracks consistent ...
R.J. Morrissey +2 more
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2013
We have studied fatigue characteristics of Ti-6Al-4V alloy synthethized by the simplest powder metallurgy technology including processes of pressing and pressure sintering of powder mixtures based on titanium hydrite. The powder material has relatively fine grains of /?-phase which, despite availability of residuale voids, provide quite high endurance ...
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We have studied fatigue characteristics of Ti-6Al-4V alloy synthethized by the simplest powder metallurgy technology including processes of pressing and pressure sintering of powder mixtures based on titanium hydrite. The powder material has relatively fine grains of /?-phase which, despite availability of residuale voids, provide quite high endurance ...
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2015
The evolution of the structural and phase states of Ti???6Al???4V alloy in nanostructuring process with the use of the method combining reversible hydrogen alloying and hot plastic deformation are studied by the electron microscopy and x-ray diffraction analysis. Plastic deformation in the ?? + ??
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The evolution of the structural and phase states of Ti???6Al???4V alloy in nanostructuring process with the use of the method combining reversible hydrogen alloying and hot plastic deformation are studied by the electron microscopy and x-ray diffraction analysis. Plastic deformation in the ?? + ??
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AIP Conference Proceedings, 1994
The yield stress of materials exhibiting work‐hardening and thermal softening can reach a maximum, at which they are unstable to further strain. Deformation then localizes as shear bands. This critical strain has been calculated using parameters for the Steinberg‐Guinan strength model.
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The yield stress of materials exhibiting work‐hardening and thermal softening can reach a maximum, at which they are unstable to further strain. Deformation then localizes as shear bands. This critical strain has been calculated using parameters for the Steinberg‐Guinan strength model.
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2014
???????????????? ???????????? ?????????? ???????????????????? ???????????????????????? ???????????????????? ???????????? Ti???6Al???4V ELI ?????? ???????????????????????? ?????????????????? ???? ?????????????????????????????? ???????????????? ???????????????????? (????????) ??????????????????, ?????????????????????? ???????????????????????? ???? ???????
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???????????????? ???????????? ?????????? ???????????????????? ???????????????????????? ???????????????????? ???????????? Ti???6Al???4V ELI ?????? ???????????????????????? ?????????????????? ???? ?????????????????????????????? ???????????????? ???????????????????? (????????) ??????????????????, ?????????????????????? ???????????????????????? ???? ???????
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