Processing by Hydrostatic Extrusion of Titanium Coated with Aluminides

2006 ◽  
Vol 114 ◽  
pp. 63-68 ◽  
Author(s):  
Halina Garbacz ◽  
Wacław Pachla ◽  
Tadeusz Wierzchoń ◽  
Krzysztof Jan Kurzydlowski
Keyword(s):  
Grain Size ◽  
Wear Resistance ◽  
Glow Discharge ◽  
Room Temperature ◽  
Pure Titanium ◽  
Hydrostatic Extrusion ◽  
Commercially Pure Titanium ◽  
Size Refinement ◽  
Frictional Wear ◽  
Commercially Pure

The material examined was commercially pure titanium with intermetallic Ti-Al layers produced by magnetron sputtering followed by glow discharge assisted treatment. This material was subjected to hydrostatic extrusion at room temperature. This resulted in substantial grain size refinement in the titanium accompanied by significant property improvement. The intermetallic Ti- Al layers reduced the pressure required during hydroextrusion and also increased the microhardness and frictional wear resistance of the material.

The Influence of Laser Irradiation Parameters on Tribological Behaviour of Commercially Pure Titanium for Dental Prostheses

2016 ◽  
Author(s):  
Karibeeran Shanmuga Sundaram ◽  
Gurusami Kiliyappan ◽  
Senthil Kumaran Selvadurai
Keyword(s):  
Surface Roughness ◽  
Wear Resistance ◽  
Pure Titanium ◽  
Laser Surface ◽  
Commercially Pure Titanium ◽  
Laser Shock ◽  
Micro Hardness ◽  
Dental Prostheses ◽  
Commercially Pure ◽  
Cp Ti

Laser shock peening (LSP) is one of the innovative technique that produces a compressive residual stress on the surface of metallic materials, thereby significantly increasing its fatigue life in applications where failure is caused by surface-initiated cracks. The specimens were treated with laser shock waves with different processing parameters, and characterization studies were made on treated specimens. The purpose of the present study was to investigate the influence of Nd:YAG laser on commercially pure titanium (CP-Ti) used in prosthetic dental restorations. The treatment influenced change in microstructure, micro hardness, surface roughness, and wear resistance characteristics. Though CP-Ti is considered as an excellent material for dental applications due to its outstanding biocompatibility, it is not suitable when high mastication forces are applied. In the present study, pulsed Nd:YAG laser surface treatment technique was adopted to improve the wear resistance of CP-Ti. The wear test pin specimens of CP-Ti were investment cast with centrifugal titanium casting machine. The wear properties of specimens were evaluated after LSP on a “pin-on-disc” wear testing tribometer, as per ASTM G99-05 standards. The results of the wear experiment showed that the treated laser surface has higher wear resistance, micro hardness, and surface roughness compared to as-cast samples. The improvement of wear resistance may be attributed due to grain refinement imparted by LSP processes. The microstructure, wear surfaces, wear debris, and morphology of the specimen were analyzed by using optical electron microscope, scanning electron microscope, and X-ray diffraction (XRD). The data were compared using ANOVA and post-hoc Tukey tests. The characteristic change resulted in increase in wear resistance and decrease in wear rate. Hence, it is evident that the more reliable and removable partial denture metal frameworks for dental prostheses may find its applications.

Homogeneity of Bulk Nanostructured Titanium Obtained by Hydrostatic Extrusion

2011 ◽  
Vol 674 ◽  
pp. 47-51 ◽  
Author(s):  
Krzysztof Topolski ◽  
Halina Garbacz ◽  
Wacław Pachla ◽  
Krzysztof J. Kurzydlowski
Keyword(s):  
Grain Size ◽  
Pure Titanium ◽  
Hydrostatic Extrusion ◽  
Equivalent Diameter ◽  
Commercially Pure Titanium ◽  
Average Grain Size ◽  
Size Diversity ◽  
Titanium Grade ◽  
Bulk Nanocrystalline ◽  
Nano Grains

The aim of this study was to investigate the homogeneity of the bulk nanocrystalline titanium rods obtained by Hydrostatic Extrusion (HE). The investigated material was commercially pure titanium grade 2. The final products of extrusion were nanocrystalline rods with diameters of 7 and 10 mm and lengths of about 250 mm. The size and shape of the grains were examined on transverse sections using transmission electron microscopy (TEM). The grain size was determined by the average grain equivalent diameter d2. The grain size diversity was quantified in terms of the equivalent diameter coefficient of variation CV (d2). The samples for the microscopic analyses were cut from various regions of the rods i.e. top, end, centre, and from surface of the rods. In all the samples, the average grain size determined on transverse sections was about 70 nm and the nano-grains in the various regions of the rods were similar in the shape. The examinations demonstrated that the nanostructure of the extruded rods was homogeneous. This observation was confirmed by the results of microhardness measurements.

Monotonic and cyclic behavior of the nitrogen ion-implanted commercially pure-titanium

2021 ◽  
Vol 15 (1) ◽  
pp. 7662-7670
Author(s):  
N. Ali ◽  
M.S. Mustapa ◽  
T. Sujitno ◽  
T.E. Putra ◽  
Husaini .
Keyword(s):  
Material Properties ◽  
Room Temperature ◽  
Pure Titanium ◽  
Tensile Tests ◽  
Fatigue Tests ◽  
Cyclic Behavior ◽  
Strain Hardening Exponent ◽  
Commercially Pure Titanium ◽  
Commercially Pure ◽  
Nitrogen Ion

This research aims to study the behavior of monotonic and cyclic plastic deformation on commercially pure titanium which has undergone surface treatment using the nitrogen ion implantation method. The doses of 2.0×1017 ions/cm2 and the energy of 100 keV were used to implant the nitrogen ions into the CpTi. Monotonic properties tests were performed in a laboratory air and at room temperature using ASTM E8 standard specimens. Fatigue and corrosion fatigue tests were conducted in a laboratory  air and in artificial saline solutions, at room temperature using ASTM 1801-97 specimens. Tensile tests were carried out with constant displacement rate and fatigue tests were carried under fully-reversed with stress-controlled conditions with stress amplitudes 230, 240, 250, 260, 270 and 280 MPa. The results showed the material properties of monotonic behavior for CpTi and Nii-Ti; tensile strength (σu) of 497 and 539 MPa and for 0.2% offset yield strength (σy) of 385 and 440 MPa, respectively and of cyclic behavior; cyclic strength coefficient (k’) of 568.41 and 818.64 and cyclic strain hardening exponent (n’) of 0.176 and 0.215, respectively. This study has succeeded in producing useful new material properties that will contribute to the field of material science and engineering.

Regularities of the formation and the role of secondary structures in the improvement of the wear resistance of commercially pure titanium VT1-0

2012 ◽  
Vol 33 (3) ◽  
pp. 184-189 ◽  
Author(s):  
B. P. Gritsenko ◽  
Yu. F. Ivanov ◽  
N. N. Koval’ ◽  
K. V. Krukovskii ◽  
N. V. Girsova ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Pure Titanium ◽  
Secondary Structures ◽  
Commercially Pure Titanium ◽  
Commercially Pure

L. KLEIN TITAN GRADE 2

Alloy Digest ◽  
2021 ◽  
Vol 70 (4) ◽  
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Pure Titanium ◽  
Heat Treating ◽  
Commercially Pure Titanium ◽  
Commercially Pure ◽  
Continuous Service ◽  
Titanium Grade ◽  
Service Environments

Abstract L. Klein Titan Grade 2 is an unalloyed, commercially pure titanium grade. It is the most widely used commercially pure titanium grade. It offers a combination of moderate strength and good ductility, with outstanding corrosion resistance in many challenging service environments. L. Klein Titan Grade 2 can operate in continuous service up to 425 °C (800 °F) and in intermittent service up to 540 °C (1005 °F). This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on corrosion resistance and wear resistance as well as forming, heat treating, machining, and joining. Filing Code: Ti-177. Producer or source: L. Klein SA.

The effect of molybdenum on titanium’s castability in dental prosthesis applications: A numerical analysis

2018 ◽  
Vol 233 (10) ◽  
pp. 1966-1971 ◽  
Author(s):  
Volkan Kovan ◽  
Tugce Tezel ◽  
Eyup Sabri Topal
Keyword(s):  
Room Temperature ◽  
Pure Titanium ◽  
Low Density ◽  
Metallic Materials ◽  
Commercially Pure Titanium ◽  
High Melting ◽  
Dental Prostheses ◽  
High Melting Temperature ◽  
Commercially Pure ◽  
Potential Use

The ISO 22674 standard categorizes metallic materials that are suitable for dental appliances and restoration fabrication. Nickel, cadmium, and beryllium are classified as hazardous elements in this international standard. However, many alloys containing nickel and beryllium are used in dentistry as biomedical metallic materials. Numerous studies on the toxicity of nickel and beryllium have led to serious doubts about the biological reliability of these alloys. Titanium therefore attracts great interest due to its potential use in dental prostheses. Commercially pure titanium has biocompatibility, low density, great corrosion resistance, and mechanical strength at room temperature. In spite of its numerous desirable properties, it is hard to cast titanium because of its high melting temperature. In this study, the microstructure and castability of binary Ti–Mo alloys (2%, 4%, 6%, 8%) was investigated using numerical methods to evaluate their potential use in dentistry. ProCAST software was used to model the casting behavior.

Effects of Rolling Reduction on Cold Forming Properties of Commercially Pure Titanium Sheet

2019 ◽  
Vol 960 ◽  
pp. 9-13
Author(s):  
Run Qi Zhang ◽  
Yi Qin Cai ◽  
Hao Xu Wang ◽  
Zhuang Li ◽  
Qi Zhou
Keyword(s):  
Grain Size ◽  
Cold Rolling ◽  
Microstructural Analysis ◽  
Pure Titanium ◽  
Commercially Pure Titanium ◽  
Titanium Sheet ◽  
Cold Forming ◽  
Grain Sizes ◽  
Commercially Pure ◽  
Accumulated Strain

Different cold rolling reductions were adopted for commercially pure titanium sheet. Cold forming properties were investigated by a microstructural analysis, Vickers microhardness and erichsen value measurements. The results have shown that Cold rolling resulted in refined alpha grains. Alpha grain size was refined further by greater cold reduction. Alpha grain sizes of the specimens of processing 1, 2 and 3 reached 30.90 μm, 26.48 μm and 20.58 μm, respectively. Cold forming properties were affected by different alpha grain sizes. The hardness and erichsen value reached the lowest and the highest values for the specimens in processing 1. The hardness increased and erichsen value decreased due to the finer alpha grain size for the specimen which was cold-rolled at a reduction of 50% in processing 2. Erichsen test results of the specimens of processing 3 had the lowest values due to the deformation of a reduction of 70%. Cold forming properties of the specimens of processing 3 were deteriorated, this is because deformation leads to the high dislocation density and the stored energy increases with accumulated strain after deformation.

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