Development of Strain Localization in a Beta-Titanium Alloy Gum Metal Analyzed by Infrared Camera and Digital Image Correlation for Various Strain Rates

Effects of thermomechanical couplings were studied in a new beta Ti alloy by IR and DIC techniques. The obtained stress-strain curves confirmed low Young’s modulus and high strength of the alloy. The determined values of yield strength increases and values of elongation till rupture decreases with increasing strain rate. It was found, by using fast and sensitive infrared camera, that the large limit of the Gum Metal reversible nonlinear deformation originates from mechanisms of dissipative nature, probably exothermic stress-induced transition of ” nanodomains.

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Decomposition of the metastable beta titanium alloy Ti-15-3

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100075117 ◽

1983 ◽

Vol 41 ◽

pp. 264-265

Author(s):

Y. L. Chen ◽

S. Fujlshiro

Keyword(s):

Low Cost ◽

High Strength ◽

Alpha Phase ◽

Thick Sheet ◽

Omega Phase ◽

Beta Titanium Alloy ◽

Beta Titanium ◽

Beta Matrix ◽

Metastable Beta ◽

Very High

Metastable beta titanium alloys have been known to have numerous advantages such as cold formability, high strength, good fracture resistance, deep hardenability, and cost effectiveness. Very high strength is obtainable by precipitation of the hexagonal alpha phase in a bcc beta matrix in these alloys. Precipitation hardening in the metastable beta alloys may also result from the formation of transition phases such as omega phase. Ti-15-3 (Ti-15V- 3Cr-3Al-3Sn) has been developed recently by TIMET and USAF for low cost sheet metal applications. The purpose of the present study was to examine the aging characteristics in this alloy.The composition of the as-received material is: 14.7 V, 3.14 Cr, 3.05 Al, 2.26 Sn, and 0.145 Fe. The beta transus temperature as determined by optical metallographic method was about 770°C. Specimen coupons were prepared from a mill-annealed 1.2 mm thick sheet, and solution treated at 827°C for 2 hr in argon, then water quenched. Aging was also done in argon at temperatures ranging from 316 to 616°C for various times.

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SP 700

Alloy Digest ◽

10.31399/asm.ad.ti0107 ◽

1995 ◽

Vol 44 (6) ◽

Keyword(s):

High Strength ◽

Heat Treating ◽

Bend Strength ◽

Beta Titanium Alloy ◽

Superplastic Behavior ◽

Temperature Performance ◽

Beta Titanium ◽

Wide Range ◽

Alpha Beta ◽

Cold Workability

Abstract SP 700 is a high strength, beta-rich alpha-beta titanium alloy. It was developed with the following attributes: (1) excellent hot- and cold-workability; (2) enhanced hardenability with a wide range of mechanical properties that can be obtained by heat treatment; and (3) superior superplastic behavior at low temperature (around 1050 K). This datasheet provides information on composition, physical properties, microstructure, elasticity, tensile properties, and bend strength. It also includes information on high temperature performance as well as heat treating. Filing Code: TI-107. Producer or source: NKK Corporation.

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UNS R54620

Alloy Digest ◽

10.31399/asm.ad.ti0086 ◽

1987 ◽

Vol 36 (7) ◽

Keyword(s):

Titanium Alloy ◽

High Temperature ◽

Time Use ◽

Temperature Stability ◽

High Strength ◽

Heat Treating ◽

High Temperature Stability ◽

Beta Titanium Alloy ◽

Beta Titanium ◽

Long Time

Abstract UNS No. R54620 is an alpha-beta titanium alloy. It has an excellent combination of tensile strength, creep strength, toughness and high-temperature stability that makes it suitable for service to 1050 F. It is recommended for use where high strength is required. It has outstanding advantages for long-time use at temperatures to 800 F. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and bend strength as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ti-86. Producer or source: Titanium alloy mills.

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RMI 6Al-6V-2Sn

Alloy Digest ◽

10.31399/asm.ad.ti0079 ◽

1980 ◽

Vol 29 (9) ◽

Keyword(s):

Corrosion Resistance ◽

Rocket Engine ◽

High Strength ◽

Heat Treating ◽

Bend Strength ◽

Beta Titanium Alloy ◽

Annealed Condition ◽

Good Corrosion Resistance ◽

Beta Titanium ◽

Alpha Beta

Abstract RMI 6A1-6V-2Sn is an alpha-beta titanium alloy that provides a tensile strength of 150,000 psi in the mill-annealed condition in section sizes up to 2 inches. It offers good corrosion resistance in applications requiring high strength-to-weight ratios at temperatures up to 750 F. Among its uses are rocket engine cases and ordnance components. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and bend strength as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ti-79. Producer or source: RMI Company.

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Effect of Cold Machining Process on the Property and Microstructure of Ti-5Mo-5V-8Cr-3Al Strip

Materials Science Forum ◽

10.4028/www.scientific.net/msf.788.134 ◽

2014 ◽

Vol 788 ◽

pp. 134-137 ◽

Cited By ~ 1

Author(s):

Pei Tong Ni ◽

Li Peng Zhou ◽

Bao Liang Bai ◽

Ming Chen Han ◽

Mei Sheng Zhu

Keyword(s):

Solution Treatment ◽

Aging Treatment ◽

High Strength ◽

Machining Process ◽

Beta Titanium Alloy ◽

Cold Forming ◽

Corrugated Shell ◽

Beta Titanium ◽

Gas Quenching ◽

Metastable Beta

Metastable beta titanium alloy Ti-5Mo-5V-8Cr-3Al, with high-strength, favorite ductility and outstanding capacity of cold forming and welding, has been found the applications in sheet metal component, pressure vessel, corrugated shell and cold heading rivet at the temperature lower than 350°C. In the present paper, the effect of cold machining deformation rate and heat treatment process on the properties and microstructures of Ti-5Mo-5V-8Cr-3Al strip were investigated. The results revealed that excellent comprehensive mechanical properties could be achieved with the alloy by reasonable cold machining process and with solution treatment at 800°C followed by gas quenching. Upon a solution and aging treatment at 480°C, the alloy performed favorite plasticity and high ultimate tensile strength of 1250MPa.

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Intergranular fracture of heat-treated weldments in a high-strength alpha-beta titanium alloy

Scripta Metallurgica ◽

10.1016/0036-9748(79)90328-4 ◽

1979 ◽

Vol 13 (10) ◽

pp. 959-964 ◽

Cited By ~ 14

Author(s):

W.A. Baeslack ◽

Yashwant Mahajan

Keyword(s):

Titanium Alloy ◽

Intergranular Fracture ◽

High Strength ◽

Beta Titanium Alloy ◽

Beta Titanium ◽

Heat Treated ◽

Alpha Beta

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Mechanical Behaviour of Beta Titanium Alloys

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1016.964 ◽

2021 ◽

Vol 1016 ◽

pp. 964-970

Author(s):

Nageswara Rao ◽

Geetha Manivasagam

Keyword(s):

Heat Treatment ◽

Titanium Alloys ◽

Dynamic Properties ◽

Solution Treatment ◽

Weight Ratio ◽

High Strength ◽

Static Properties ◽

Beta Titanium Alloy ◽

Beta Titanium ◽

Beta Titanium Alloys

Beta titanium alloys have several attractive features; this has resulted in this group of alloys receiving much attention since 1980’s. Among the attributes which distinguish them for their superiority over other structural materials are (i) high strength to which they can be heat treated, resulting in high strength to weight ratio (ii) high degree of hardenability which enables heat treatment in large section sizes to high strength levels (iii) excellent hot and cold workability, making them as competitive sheet materials etc. The standard heat treatment consists of solution treatment in beta or alpha plus beta phase field followed by aging. However, certain aging treatments can render the materials in a state of little or no ductility; the designer has to be aware of this behaviour and has to keep away from such treatments while working with the materials. Such unfavourable aging treatments may adversely affect not only the static properties such as reduction in area and elongation in a tensile test, but also dynamic properties such as impact toughness. Results of fractographic studies are in line with those of mechanical testing. The authors would present the foregoing analysis, based primarily on the wide-ranging researches they carried out on beta titanium alloy Ti15-3 and to some extent data published by researchers on other grades of beta titanium alloys. An attempt is made to explain the mechanisms underlying the embrittlement reactions that take place in beta titanium alloys under non-optimal aging treatments.

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Beta-titanium biomedical alloy: effect of thermal processing on mechanical properties

Archives of Metallurgy and Materials ◽

10.2478/v10172-012-0082-8 ◽

2012 ◽

Vol 57 (3) ◽

pp. 753-757 ◽

Cited By ~ 2

Author(s):

K.V. Sudhakar ◽

K. Konen ◽

K. Floreen

Keyword(s):

Mechanical Properties ◽

Titanium Alloy ◽

Testing Machine ◽

Solution Treatment ◽

High Strength ◽

Fracture Morphology ◽

Beta Titanium Alloy ◽

Beta Titanium ◽

Digital Microscope ◽

Aging Conditions

A new β-titanium alloy (Ti-3Al-5V-6Cr-3Mo-3Zr) was investigated as a function of heat treatment to evaluate its mechanical properties. The cold drawn beta-titanium alloy was subjected to β-annealing as well as solution treatment and aging treatments. The mechanical properties were evaluated using MTS Landmark-servo hydraulic Universal Testing Machine. The beta-titanium alloy demonstrated an excellent combination of strength and ductility for both β-annealing and solution treatment and aging conditions. The influence of thermal treatments on microstructure was studied with HiRox digital microscope. The fracture morphology investigated revealed predominantly cup and cone/dimpled fracture surface features demonstrating excellent toughness in addition to high strength and low stiffness that are suitable for biomedical applications.

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