Fit of cast commercially pure titanium and Ti-6Al-4V alloy crowns before and after marginal refinement by electrical discharge machining

2002 ◽  
Vol 88 (5) ◽  
pp. 467-472 ◽  
Author(s):  
Edwin Fernando Ruiz Contreras ◽  
Guilherme Elias Pessanha Henriques ◽  
Suely Ruiz Giolo ◽  
Mauro Antonio Arruda Nobilo
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Pure Titanium ◽  
Commercially Pure Titanium ◽  
Commercially Pure ◽  
Before And After

Influence of Deformation Substructures on the Early Mechanisms of Recrystallization in Cold-Rolled Titanium and Zirconium

2005 ◽  
Vol 495-497 ◽  
pp. 711-718 ◽  
Author(s):  
N. Dewobroto ◽  
Nathalie Bozzolo ◽  
Francis Wagner
Keyword(s):  
Pure Titanium ◽  
Local Deformation ◽  
Commercially Pure Titanium ◽  
Titanium Sheet ◽  
Commercially Pure ◽  
Before And After ◽  
Nucleation Mechanisms ◽  
Grain Fragmentation ◽  
Cold Rolled ◽  
Short Times

The mechanisms governing the very first stage of static recrystallization in two hexagonal alloys (commercially pure titanium and low alloyed zirconium) are investigated in this paper. Initially fully recrystallized and equiaxed materials were cold-rolled to 80% thickness reduction and subsequently recrystallized at 500°C for short times. High resolution EBSD maps were acquired in a FEG-SEM before and after annealing in order to see where and how the new grains appear. Nonoriented nucleation mechanisms are involved in both materials, and there is a strong correlation between the local deformation substructures and the recrystallization kinetics. Recrystallization is extremely fast in the areas where the deformation cells are small and highly misoriented, i.e. in the areas which underwent severe grain fragmentation. Twinning plays an important role for that purpose in the studied titanium sheet.

scholarly journals Corrosion Resistance of Ti-29Nb-13Ta-4.6Zr Alloy in a Fluoride-Containing Solution

2012 ◽  
Vol 529-530 ◽  
pp. 584-587
Author(s):  
Shinji Takemoto ◽  
Masaaki Nakai ◽  
Masayuki Hattori ◽  
Masao Yoshinari ◽  
Eiji Kawada ◽  
...  
Keyword(s):  
Oxide Film ◽  
Saline Solution ◽  
Pure Titanium ◽  
Marked Change ◽  
Commercially Pure Titanium ◽  
Subsequent Increase ◽  
Commercially Pure ◽  
Outermost Surface ◽  
Before And After ◽  
Constituent Elements

The objective of this study was to evaluate the corrosion behavior of Ti-29Nb-13Ta-4.6Zr alloy (TNTZ) with immersion in an acidic saline solution containing fluoride by investigating change in color and the surface structure of the oxide film. With immersion in fluoride-containing solution, TNTZ showed a less marked change in color than commercially pure titanium (TI), and a smaller decrease in glossiness. The outermost surface was covered with oxides from its constituent elements at before and after immersion in solution with or without fluoride. When immersed in fluoride-containing solution, the film consisted of larger niobium and tantalum oxides than that before or after immersion in solution without fluoride. In summary, TNTZ showed superior resistance to discoloration to TI after immersion in fluoride-containing solution. The results suggest that the subsequent increase in niobium and tantalum fractions in the oxide film in TNTZ improves resistance to corrosion.

Investigation of Wire Consumption and Wear Mechanism in Trim Cut WEDM Operation of Commercially Pure Titanium

2014 ◽  
Vol 808 ◽  
pp. 43-50 ◽  
Author(s):  
Rupesh Chalisgaonkar ◽  
Jatinder Kumar
Keyword(s):  
Electrical Discharge Machining ◽  
Research Work ◽  
Pure Titanium ◽  
Surface Characteristics ◽  
Commercially Pure Titanium ◽  
Commercially Pure ◽  
Trim Cut ◽  
Pulse On Time ◽  
Pulse Off Time ◽  
Brass Wire

This paper investigates the wire wear phenomena during finish cutting operation of wire electrical discharge machining for commercially pure titanium. In this research work, the effects of key process parameters such a wire type (zinc coated and uncoated brass wire), pulse on time (Ton), pulse off time (Toff), peak current (IP), wire feed (WF), servo voltage (SV) and wire offset (Woff) were investigated on wire weight consumption (eroded weight of wire after machining) in finish cut operation followed by rough cut WEDM. Experimental data were collected based on the Taguchi method of experimental design using L18 Taguchi standard orthogonal array. The experimental results were analyzed by conducting ANOVA test for finding out significance of the input parameters on wire weight consumption. Single response optimization was performed for exploring the optimum parametric setting for wire consumption in trim cut WEDM operation. Comparative study for the surface characteristics of the both types of wire (uncoated and zinc coated brass wire) used was done with the help of scanning electron microscopy (SEM).

In vitro comparative analysis of the fit of gold alloy or commercially pure titanium implant-supported prostheses before and after electroerosion

2004 ◽  
Vol 92 (2) ◽  
pp. 132-138 ◽  
Author(s):  
Ivete Aparecida de Mattias Sartori ◽  
Ricardo Faria Ribeiro ◽  
Carlos Eduardo Francischone ◽  
Maria da Gloria Chiarello de Mattos
Keyword(s):  
Comparative Analysis ◽  
Gold Alloy ◽  
Pure Titanium ◽  
Titanium Implant ◽  
Commercially Pure Titanium ◽  
Commercially Pure ◽  
Before And After

RMI 0.2% Pd

Alloy Digest ◽  
1979 ◽  
Vol 28 (12) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Crevice Corrosion ◽  
Elevated Temperatures ◽  
Pure Titanium ◽  
Heat Treating ◽  
Low Ph ◽  
Commercially Pure Titanium ◽  
Bend Strength ◽  
Commercially Pure ◽  
Minimum Yield

Abstract RMI 0.2% Pd is a grade of commercially pure titanium to which up to 0.2% palladium has been added. It has a guaranteed minimum yield strength of 40,000 psi with good ductility and formability. It is recommended for corrosion resistance in the chemical industry and other places where the environment is mildly reducing or varies between oxidizing and reducing. The alloy has improved resistance to crevice corrosion at low pH and elevated temperatures. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and bend strength. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ti-74. Producer or source: RMI Company.

UPM CP TITANIUM GRADE 3 (UNS R50550)

Alloy Digest ◽  
2020 ◽  
Vol 69 (6) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Pure Titanium ◽  
Heat Treating ◽  
Commercially Pure Titanium ◽  
Commercially Pure ◽  
Continuous Service ◽  
Pure Grade ◽  
Grade 3 ◽  
Titanium Grade ◽  
Design Stress

Abstract UPM CP Titanium Grade 3 (UNS R50550) is an unalloyed commercially pure titanium that exhibits moderate strength (higher strength than that of Titanium Grade 2), along with excellent formability and corrosion resistance. It offers the highest ASME allowable design stress of any commercially pure grade of titanium, and can be used in continuous service up to 425 °C (800 °F) and in intermittent service up to 540 °C (1000 °F). This datasheet provides information on composition, physical properties, and elasticity. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ti-167. Producer or source: United Performance Metals.

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