Experimental Investigation of Various Chip Parameters during Machining of the Ti25Nb3Mo3Zr2Sn Beta Titanium Alloy

2012 ◽  
Vol 622-623 ◽  
pp. 366-369 ◽  
Author(s):  
Rizwan Abdul Rahman Rashid ◽  
Shou Jin Sun ◽  
Gui Wang ◽  
Matthew Simon Dargusch
Keyword(s):  
Titanium Alloy ◽  
Chip Thickness ◽  
Shear Angle ◽  
Beta Titanium Alloy ◽  
Solution Treated ◽  
Beta Titanium ◽  
Heat Treated ◽  
Wide Range ◽  
Thickness Shear ◽  
Cutting Speeds

Machining of Ti25Nb3Mo3Zr2Sn beta titanium alloy is carried out under two different heat treatments, solution treated, and solution treated and aged conditions. The chips formed after machining were cold mounted, polished and etched to reveal their microstructures. Different chip parameters such as average chip thickness, shear angle, undeformed chip length, and distance between serrations were measured and reported for both the heat treated samples for a wide range of cutting speeds, ranging from 5 m/min to 175 m/min. The results obtained were explained in terms of the heat treatment (hardness) of the samples and the cutting speeds.

Autocatalytic Nucleation of Omega Phase in a Beta-Titanium Alloy

1976 ◽  
Vol 34 ◽  
pp. 604-605
Author(s):  
T. J. Headley
Keyword(s):  
Titanium Alloy ◽  
Electron Microscope ◽  
Omega Phase ◽  
General Study ◽  
Beta Titanium Alloy ◽  
Ω Phase ◽  
Solution Treated ◽  
Beta Titanium ◽  
Considerable Controversy ◽  
Titanium Zirconium

The well-known ββ+ω transformation has been observed in many b.c.c.- stabilized titanium, zirconium, and hafnium alloys(1,2). Although considerable controversy still exists regarding the exact mechanism(s) for formation of the ω phase, recent studies suggest that both the athermal and isothermal types form by the same mechanism and that they may therefore be considered equivalent products(3,4).The present observations are concerned with the formation of isothermal w in the B-titanium alloy RMI(38-6-44) [composition in wt.%: 3.4 Al, 8.3 V, 5.8 Cr, 3.9 Zr, 4.2 Mo, balance Ti] and form a part of a more general study of the aging characteristics of this alloy(5). The alloy was solution treated at 927°C, air-quenched, aged at appropriate temperatures, and examined in a Phillips EM 200 electron microscope. TEM failed to reveal the presence of athermal m in the solution treated and quenched material. Isothermal OJ formed during aging at 250° and 300°C, but it was not stable at temperatures of 350°C and above.

TIMETAL 15-3

Alloy Digest ◽  
1992 ◽  
Vol 41 (11) ◽  
Keyword(s):  
Titanium Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Aged Condition ◽  
Beta Titanium Alloy ◽  
Solution Treated Condition ◽  
Solution Treated ◽  
Treated Condition ◽  
Beta Titanium ◽  
Metastable Beta

Abstract TIMETAL 15-3 is a metastable beta titanium alloy that offers substantial weight reductions over other engineering materials. In the solution treated condition, it has excellent cold formability; in the aged condition, it has high strength. TIMETAL 15-3 is usually acceptable for use at temperatures up to 550 F. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on forming and heat treating. Filing Code: Ti-101. Producer or source: Titanium Metals Corporation (Timet).

ALLVAC 6Al-4V

Alloy Digest ◽  
1992 ◽  
Vol 41 (3) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Titanium Alloy ◽  
High Temperature ◽  
High Strength ◽  
Heat Treating ◽  
Beta Titanium Alloy ◽  
Temperature Performance ◽  
Beta Titanium ◽  
Wide Range ◽  
Alpha Beta

Abstract ALL VAC 6A1-4V is an alpha/beta titanium alloy. It is the most widely used of the titanium alloys. It is age hardenable and it develops high strength. It can be used over a wide range of temperatures from cryogenic to about 800 F (427 C). This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ti-99. Producer or source: Allvac Ltd.

ZAPP TiAl6V4

Alloy Digest ◽  
2020 ◽  
Vol 69 (12) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Titanium Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Aged Condition ◽  
Beta Titanium Alloy ◽  
Excellent Corrosion Resistance ◽  
Beta Titanium ◽  
Heat Treated ◽  
Low Weight

Abstract Zapp TiAl6V4 is an alpha-beta titanium alloy that is used in the annealed or solution heat treated and aged condition for applications requiring high strength, relatively low weight, and excellent corrosion resistance. It is typically used in the low to moderate temperature range (up to about 400 °C, or 750 °F). Ti-6Al-4V is the most widely used titanium alloy, accounting for more than 50% of the total titanium used. The aerospace industry accounts for more than 80% of this usage. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ti-173. Producer or source: Zapp AG.

scholarly journals Influence of Additive Manufactured Stainless Steel Tool Electrode on Machinability of Beta Titanium Alloy

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 778
Author(s):  
Ragavanantham Shanmugam ◽  
Monsuru Ramoni ◽  
Geethapriyan Thangamani ◽  
Muthuramalingam Thangaraj
Keyword(s):  
Titanium Alloy ◽  
Removal Rate ◽  
Electrochemical Micromachining ◽  
Duty Ratio ◽  
Tool Electrode ◽  
Machining Parameters ◽  
Beta Titanium Alloy ◽  
New Horizons ◽  
Beta Titanium ◽  
Wide Range

Additive manufacturing technology provides a gateway to completely new horizons for producing a wide range of components, such as manufacturing, medicine, aerospace, automotive, and space explorations, especially in non-conventional manufacturing processes. The present study analyzes the influence of the additive manufactured tool in electrochemical micromachining (ECMM) on machining beta titanium alloy. The influence of different machining parameters, such as applied voltage, electrolytic concentration, and duty ratio on material removal rate (MRR), overcut, and circularity was also analyzed. It was inferred that the additive manufactured tool can produce better circularity and overcut than a bare tool due to its higher corrosion resistance and localization effect. The additive manufactured tool can remove more material owing to its strong atomic bond of metals and higher electrical conductivity.

Heat-Treatment Studies on Dissimilar Ti-Alloy EB Weld Joints

2012 ◽  
Vol 585 ◽  
pp. 445-449
Author(s):  
Kurnala Naresh Kumar ◽  
Satish Kumar Singh ◽  
Pravin Muneshwar ◽  
Abhay K. Jha ◽  
Bhanu Pant
Keyword(s):  
Room Temperature ◽  
Weld Interface ◽  
Beta Titanium Alloy ◽  
Two Phase ◽  
Weld Joints ◽  
Solution Treated ◽  
Beta Titanium ◽  
Heat Treated ◽  
Weld Parameters ◽  
Failure Location

Ti3Al2.5V alloy is lean alpha plus beta titanium alloy having two phase microstructure at room temperature (RT) and has beta transus temperature (Tβ) about 9350C and Ti6Al4V-ELI (extra low interstitials) alloy has two phase structure at RT and has Tβ about 9750C. The samples were electron beam welded (EBW) after the optimization of weld parameters on bead-on plate of 6mm thickness of Ti6Al4V-ELI alloy. The samples were heat treated (solution treated, ST at 9100C for 20 minutes water quenched, WQ and aged at 5100C for 8 hours and air cooled, AC to RT). The specimens were tested to evaluate mechanical properties in as-welded, solution treated and aged conditions. The improvement in the tensile strength was 810 MPa to 897 MPa in as weld to ST conditions, and comparable in STA condition (887 MPa). The improvement in yield strength was 760 MPa to 782 MPa and 848 MPa in as-welded, ST and aged conditions respectively. While there is a decreasing trend in the ductility (%EL) of the joint in three conditions (as weld, ST and STA). In all the specimens evaluated at different heat treated conditions the failure location was within parent Ti3Al2.5V alloy (parent metal away from the weld interface) as confirmed through OM (optical microscopy).

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