Electron Beam Cold Hearth Melted Titanium Alloys and the Possibility of Their Use as Anti-Ballistic Materials

Three commercial titanium alloys: two-phase α+β Ti-6Al-4V (low alloyed), and T110 (Ti-5.5Al-1.5V-1.5Mo-4Nb-0.5Fe, higher-alloyed), and β-metastable Ti-1.5Al-6.8Mo-4.5Fe were melted using EBCHM approach in the form of 100 mm in diameter ingots with the weight of about 20 kg each. After 3D hot pressing at single β-field temperatures ingots were rolled at temperatures below β-transus onto plates with thickness varying from 3 mm to 25 mm. Different heat treatments, including annealing at α+β or β-field temperatures, and special strengthening Surface Rapid Heat Treatment (SRHT) which after final aging provided special gradient microstructure with a hardened surface layer over ductile basic core, were employed. Mechanical properties were studied with tensile and 3-point flexure tests. It was established that the best combination of tensile strength and ductility in all alloys studied was obtained after SRHT, whereas at 3-point flexure better characteristics were obtained for the materials annealed at temperatures of (α+β)-field. At the same time, ballistic tests made at a certified laboratory with different kinds of ammunition showed essential superiority of plates having upper layers strengthened with SRHT. The effect of microstructure of the alloys, plate thickness and type of used ammunition on ballistic resistance is discussed.

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Application of Local Rapid Heat Treatment for Improvement of Microstructure and Mechanical Properties of Titanium Products

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.436.185 ◽

2010 ◽

Vol 436 ◽

pp. 185-194 ◽

Cited By ~ 3

Author(s):

Pavlo E. Markovsky

Keyword(s):

Mechanical Properties ◽

Heat Treatment ◽

Titanium Alloys ◽

Physical Vapor Deposition ◽

Compressor Blades ◽

Turbine Engine ◽

Commercial Titanium ◽

Heat Treated Condition ◽

Complicated Part ◽

Rapid Heat Treatment

Local Rapid Heat Treatment (LRHT) based on induction-heating methods can be used to form unique location-specific microstructures and properties in commercial titanium alloys while maintaining the bulk of the material in an initial, non-heat-treated condition. The present work is focused on practical aspects of LRHT application for microstructure/ mechanical properties improvement of some parts made of commercial titanium alloys. It is shown, that LRHT application could improve mechanical properties of such complicated part like turbine engine compressor blades, and two made of Ti-6Al-4V and VT22 titanium alloys goods after repair with Electron Beam Physical Vapor Deposition as well as with Build-up Welding.

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Modification of Mechanical Properties of High-Strength Titanium Alloys VT23 and VT23M Due to Impact-Oscillatory Loading

Metals ◽

10.3390/met9010080 ◽

2019 ◽

Vol 9 (1) ◽

pp. 80 ◽

Cited By ~ 5

Author(s):

Mykola Chausov ◽

Janette Brezinová ◽

Andrii Pylypenko ◽

Pavlo Maruschak ◽

Liudmyla Titova ◽

...

Keyword(s):

Mechanical Properties ◽

Titanium Alloys ◽

High Strength ◽

The Self ◽

Self Organization ◽

Two Phase ◽

Rolled Metal ◽

Technological Method ◽

Equilibrium Processes ◽

Production Conditions

A simple technological method is proposed and tested experimentally, which allows for the improvement of mechanical properties in sheet two-phase high-strength titanium alloys VT23 and VT23M on the finished product (rolled metal), due to impact-oscillatory loading. Under impact-oscillatory loading and dynamic non-equilibrium processes (DNP) are realized in titanium alloys, leading to the self-organization of the structure. As a result, the mechanical properties of titanium alloys vary significantly with subsequent loading after the realization of DNP. In this study, the test modes are found, which can be used in the production conditions.

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Modeling the anisotropy of hot plastic deformation of two-phase titanium alloys with a colony microstructure

International Journal of Plasticity ◽

10.1016/j.ijplas.2018.02.010 ◽

2018 ◽

Vol 104 ◽

pp. 173-195 ◽

Cited By ~ 18

Author(s):

X.G. Fan ◽

X.Q. Jiang ◽

X. Zeng ◽

Y.G. Shi ◽

P.F. Gao ◽

...

Keyword(s):

Plastic Deformation ◽

Titanium Alloys ◽

Two Phase ◽

Hot Plastic Deformation

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Study of Microsegregation of Al in Ti-Al Binary Alloys and Commercial Titanium Alloys

Journal of the Japan Institute of Metals and Materials ◽

10.2320/jinstmet1952.36.1_8 ◽

1972 ◽

Vol 36 (1) ◽

pp. 8-13

Author(s):

Shoichi Tokuda ◽

Hiromichi Kawahara

Keyword(s):

Titanium Alloys ◽

Binary Alloys ◽

Commercial Titanium

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Strength and ductility of titanium alloys VT1-0 and OT4-0 at elevated temperatures

Chemical and Petroleum Engineering ◽

10.1007/bf01155565 ◽

1975 ◽

Vol 11 (2) ◽

pp. 149-150

Author(s):

M. V. Danilov ◽

S. M. Kutepov ◽

L. S. Pritykina ◽

A. I. Kosarev

Keyword(s):

Titanium Alloys ◽

Elevated Temperatures ◽

Strength And Ductility

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PROMISING INTERMETALLIC Al2Ti ALLOYS FOR THE MANUFACTURE OF PARTS BY CASTING METHODS (review)

Proceedings of VIAM ◽

10.18577/2307-6046-2021-0-5-23-38 ◽

2021 ◽

pp. 23-38

Author(s):

A.V. Trapeznikov ◽

◽

V.I. Ivanov ◽

E.A. Prokhorchuk ◽

Yu.V. Reshetnikov ◽

...

Keyword(s):

Intermetallic Compound ◽

Titanium Alloys ◽

Power Plants ◽

Promising Material ◽

Two Phase ◽

Heat Resistant ◽

Technological Characteristics ◽

Cast Products

The Al2Ti intermetallic compound is a promising material for the development of heat-resistant alloys used for the manufacture of shaped parts for ground and aircraft power plants. Considers the features of the structure of two-phase alloys, evaluates the casting properties and technological characteristics in comparison with various AlTi alloys, as applied to the production of ingots and cast products. It is necessary to use technologies developed for titanium alloys in the production of cast products from such alloys.

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Effects of Salt Atmosphere on Crack Sensitivity of Commercial Titanium Alloys at 600 to 900 F

Stress-Corrosion Cracking of Titanium ◽

10.1520/stp46433s ◽

2009 ◽

pp. 179-179-15

Keyword(s):

Titanium Alloys ◽

Commercial Titanium

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Efficiency of Microstructure Refinement in Ti-Based Alloys

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1016.1753 ◽

2021 ◽

Vol 1016 ◽

pp. 1753-1758

Author(s):

Sergey Zherebtsov ◽

Nikita Stepanov ◽

Gennady Salishchev

Keyword(s):

Plastic Deformation ◽

Chemical Composition ◽

Titanium Alloys ◽

Microstructure Evolution ◽

Large Plastic Deformation ◽

Two Phase ◽

Microstructure Refinement ◽

Kinetics Of ◽

Rate Type ◽

Lamellar Type

The influence of various factors on the efficiency of microstructure refinement in two-phase titanium alloys with respect to a well-known Ti-6Al-4V alloy was discussed. The kinetics of microstructure evolution in titanium alloys with a lamellar type α/β microstructure during large plastic deformation depends mainly on temperature and strain rate, type of the initial microstructure, thickness of the α lamellae, path of deformation and chemical composition. Each parameter should be controlled to provide the most efficient microstructure refinement during conventional metalforming methods.

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Effect of the Quenching Temperature on the Phase Composition and Youngʹs Modulus of Corrosion-Resistant and Biocompatible Titanium Alloys

Materials Science Forum ◽

10.4028/www.scientific.net/msf.946.309 ◽

2019 ◽

Vol 946 ◽

pp. 309-314 ◽

Cited By ~ 1

Author(s):

Anatoly G. Illarionov ◽

S.V. Grib ◽

A.V. Huppeev

Keyword(s):

Phase Composition ◽

Titanium Alloys ◽

Young’S Modulus ◽

Young's Modulus ◽

Two Phase ◽

Quenching Temperature ◽

Thermo Calc Software ◽

Extreme Change ◽

The Relationship ◽

Micro Indentation

The relationship between the phase composition and the Young’s modulus in quenched PT-7M, Ti-6Al-7Nb, BT16 titanium alloys has been studied using the structural analysis, thermodynamic calculations in the Thermo-Calc software and micro-indentation. It is found that the nature of the change in the Young’s modulus in the investigated titanium alloys after quenching from the two-phase α+β-region depends on the chemical composition of the alloy, which determines the nature of the observed metastable phases (α', α", ω, β). The correlation between the extreme change in the Young’s modulus from the quenching temperature and the so-called interatomic bonding force (Fb) calculated from the electronic structure parameters of the α, α', β phases was shown for the Ti-6Al-7Nb alloy. The relationship between the limits of the Young’s modulus of the investigated alloys during quenching with the level of their alloying with α-and β-stabilizers is shown.

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