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2 edition of effect of alpha phase morphology on the impact energy of commercial purity titanium found in the catalog.

effect of alpha phase morphology on the impact energy of commercial purity titanium

James Michael York

effect of alpha phase morphology on the impact energy of commercial purity titanium

by James Michael York

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  • 18 Currently reading

Published .
Written in English

    Subjects:
  • Titanium.

  • Edition Notes

    Statementby James Michael York.
    The Physical Object
    Pagination[9] 88 leaves, bound :
    Number of Pages88
    ID Numbers
    Open LibraryOL14213552M

    We study thin films of semi-crystalline regioregular poly(3-hexylthiophene) (RR-P3HT) and amorphous regiorandom P3HT (RRa-P3HT) in blends with [6,6]-phenyl C61 butyric acid methyl ester (PCBM). Ultraviolet and (angle-resolved) X-ray photoelectron spectroscopy techniques together with absorption, photoluminescence and optical microscopy were used to measure electronic energy levels, vertical. such as martensite morphol18, martensite amou the tempering and carbon content of ferrite and martens Moreover, attentions have been devoted to the effect of different initial microstructures on the austenitization during intercritical annealing of dual-phase steels22, However.

    A study of the effect of the alpha to gamma phase transformation on the short time creep behavior of an iron-chromium-nickel alloy. by Keily, Lawrence : Anisotropic response of high-purity a-titanium: Experimental characterization and constitutive modeling Michael E. Nixona, Oana Cazacub,*, Ricardo A. Lebensohnc a Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL , USA bDepartment of Mechanical and Aerospace Engineering, University of Florida, REEF, N Poquito Road, Shalimar, FL , USA.

    The effect of morphology with magnesium (Mg) powder on phase formation and critical current density (J c,) of sintered Mg 11 B 2 bulk was a precursor for the formation of Mg 11 B 2, the morphology of spherical and plate-like of Mg powder were separately synthesized using atomization and chemical reduction differential thermal analyses of the sintering process, the solid. Moreover, it has been reported that the activation energy for oxygen diffusion in the α phase is 10–20 kJ/mol higher than that in the α 2 phase, which is equivalent to the difference of the oxidation activation energy between the TA29 and TiAlNbMo alloys. Therefore, the oxidation mechanism of the TiAlNbMo alloy at Stage Cited by: 1.


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Effect of alpha phase morphology on the impact energy of commercial purity titanium by James Michael York Download PDF EPUB FB2

THE EFFECT OF ALPHA PHASE MORPHOLOGY ON THE IMPACT ENERGY OF COMMERCIAL PURITY TITANIUM I. INTRODUCTION INVESTIGATION BASIS: If one examines the development of the microstructure-property relationships in titanium and its alloys, it becomes evident that very little work has been done in the field of crack propagation and frac.

F.H. Froes, in Encyclopedia of Materials: Science and Technology, α-Alloys. The α-alloys contain predominantly α-phase at temperatures well above °C ( °F).

A major class of α-alloy is the unalloyed commercially pure (CP) titanium family of alloys that differ by the amount of oxygen and iron in each alloy. The effect of α-phase grains morphology in initial microstructure on superplasticity of two-phase titanium alloys Article (PDF Available) in Materials Science Forum January.

The effect of up to ppm hydrogen on the microstructure and mechanical properties of high-purity titanium containing oxygen, nitrogen, tin, and aluminum was investigated. Increasing the hydrogen content resulted in precipitation of a hydride phase and decreased the notch-bend impact strength of the alloys containing oxygen, nitrogen, and tin, similar to the hydrogen embrittlement of Cited by: 1.

Effect of phase morphology on fatigue crack growth (FCG) resistance has been investigated in the case of an α-β titanium alloy. Fatigue crack gro The microstructures comprising metastable β matrix are observed to yield higher FCG resistance than those for transformed β matrix, irrespective of primary α phase morphology (equiaxed or elongated).Cited by: In many applications such as the landing gear of aircraft and geothermal energy production, titanium components may be subjected to stresses for extended periods of time.

It has long been known that single-phase α (HCP), single-phase β (BCC), and two-phase α + β Ti alloys can creep at low temperatures (Author: Zane William Wyatt.

The α phase morphology after ageing at °C consisted of large plate-shaped precipitates which coarsened rapidly with increasing ageing time. Alpha and beta titanium alloys represent. The effects of Si 1-x Ge x alloy composition on the Ti-Si 1-x Ge x solid phase reaction have been examined. Specifically, effects on the titanium germanosilicide phase formation sequence, C54 Ti(Si 1-y Ge y) 2 nucleation temperature, and C54 Ti(Si 1-y Ge y) 2 morphology were examined.

It was determined that the Ti-Si 1-x Ge x reaction follows a “Ti-Si-like” reaction path for Si-rich Si 1-x Cited by: It is generally accepted that fine-grained and equiaxed microstructure enables superplastic deformation of two-phase titanium alloys.

Appropriate microstructure is usually developed in the thermomechanical processing with careful selection of the parameters of plastic deformation and heat treatment. Based on results of own research in this area increased superplasticity was found in Ti6Al4V Cited by: 1.

The Science, Technology and Application of Titanium Proceedings of an International Conference Organized by the Institute of Metals, the Metallurgical Society of Aime, and the American Society for Metals in Association with the Japan Institute of Metals and.

The effect of silver on the phase transition and microstructure of titanium oxide films grown by pulsed cathodic arc had been investigated by Cited by: Most titanium alloys used in structural applications in the aerospace, energy and chemical industries consist of two-phase mixtures of α and β phases combined in different morphologies and relative volume fractions.

Two-phase α + β alloys offer a wide range of combinations of strength, toughness and high temperature properties up to ~°C. Titanium has two dominant allotropic phases α+β.

These alpha and beta phases, and their orientations are responsible for the difference in properties between titanium’s many alloys. The alpha phase of titanium is close-packed hexagonal and its beta phase body centred cubic.

In pure titanium, the alpha phase is stable below °C degrees and the beta. Titanium dioxide is a polymorphous compound with a broad range of applications in catalysis and photocatalysis, gas sensors, energy storage, self-cleaning devices, optical and corrosion protective coatings applications are dependent on the crystallographic structure, morphology and physical properties of the different phases of by: Plasticity of commercial pure (CP) titanium and single-phase alloys depends on type and content of impurities, alloying elements, temperature of deformation and strain rate.

Increase in impurities and alloying elements content reduces plasticity due to solid solution strengthening (Fig. 5) (Glazunov & Mojsiejew, ).Cited by: 3. To understand the effect of power and pressure on the coating morphology, Copper and Titanium films have been deposited in a power-pressure matrix.

The RF-power was increased from - W. The pressure was set to 6 Pa and 13 Pa respectively. For Copper, the morphology changes from columnar to fully dense with increasing. Selected Publications of Thomas R. Bieler ( Publications as of 1/20/).

h-factor (ISI): more than 29 papers have been referred to more than 29 times, > citations. Reviewed Journal papers: (10 most recent) Impact of Isothermal Aging and Sn Grain Orientation on the Long-Term Reliability of Wafer-Level Chip-Scale Package Sn–Ag–Cu Solder Interconnects, Tae-Kyu Lee, Bite Zhou.

In this study we apply a combination of theoretical and computational materials science techniques, leveraged with experimental data, to quantify the effects of alpha-beta phase boundaries and oxygen interstitials on twin nucleation, twin growth, and ultimately mechanical behavior in titanium : William Joseph Joost.

Other articles where Alpha-beta alloy is discussed: titanium processing: Alpha and beta phases: four classes: commercially pure, alpha, alpha-beta, and beta. Each class has distinctive characteristics. Pure titanium, although very ductile, has low strength and is therefore used when strength is not critical and corrosion resistance is desired.

The alpha alloys are weldable and have good. Abstract: Taking three titanium commercial alloys: commercial purity titanium (, single-phase α), Ti64 (Ti-6(wt.%)Al-4V, two-phase α+β) and TIMETAL-LCB (TiAlFeMo, both two-phase α+β and single-phase β) as program materials, the influence of phase composition, microstructure and deformation rate (V D, varied from to 10 1 s-1), and deformation mode (compression and 3.

Mechanical, physical and chemical properties of a part depend on the size, morphology and dispersion of the constituents of the microstructure of the part’s material. Therefore, this chapter discusses the different processes of altering the microstructure of Al-Si–based alloys to desired functional properties.

These processes, commonly called modification methods, were broadly categorised Cited by: 1.To understand the effect of power and pressure on the coating morphology, Copper and Titanium films have been deposited in a power-pressure matrix.

The RF-power was increased from - W. The pressure was set Pa and 13Pa to 6 respectively. For Copper, the morphology changes from columnar to fully dense with increasing.Abstract.

The diffusion coefficients for titanium and niobium radioactive tracers were simultaneously measured in Ti, Ti/sub NbTi Nband Ti Nb over the temperature range from °C to °C using standard lathe sectioning techniques. The samples were initially heat treated by annealing above the α-ß phase transition temperature and then either cooling.