Effect of the surface condition of titanium alloy components on their working capacity after annealing in different atmospheres

1986 ◽  
Vol 28 (8) ◽  
pp. 576-579
Author(s):  
E. A. Borisova ◽  
I. I. Shashenkova ◽  
M. V. Zakharova
Keyword(s):  
Titanium Alloy ◽  
Surface Condition ◽  
Working Capacity

Selective Laser Melted Titanium Alloy for Transgingival Components: Influence of Surface Condition on Fibroblast Cell Behavior

2021 ◽  
Author(s):  
Marie‐Joséphine Crenn ◽  
Aurélie Benoit ◽  
Géraldine Rohman ◽  
Thomas Guilbert ◽  
Olivier Fromentin ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Surface Condition ◽  
Fibroblast Cell ◽  
Cell Behavior

scholarly journals Nanotubular Oxide Layers and Hydroxyapatite Coatings on Porous Titanium Alloy Ti13Nb13Zr

2018 ◽  
Vol 18 (4) ◽  
pp. 17-23 ◽  
Author(s):  
M. Supernak-Marczewska ◽  
A. Ossowska ◽  
P. Strąkowska ◽  
A. Zieliński
Keyword(s):  
Titanium Alloy ◽  
Surface Condition ◽  
Porous Titanium ◽  
Biological Processes ◽  
Porous Substrate ◽  
Oxide Layers ◽  
Physical Chemical ◽  
Hydroxyapatite Coatings ◽  
Phosphate Coatings ◽  
Calcium Phosphate Coatings

AbstractThe surface condition of an implant has a significant impact on response occurring at the implant-biosystem border. The knowledge of physical-chemical and biological processes allows for targeted modification of biomaterials to induce a specified response of a tissue. The present research was aimed at development of technology composing of obtaining the nanotube oxide layers on a porous titanium alloy Ti13Nb13Zr, followed by the deposition of phosphate coating. The porous substrate (porosity about 50%) was prepared by a selective laser melting of the Ti13Nb13Zr powder with the SLM Realizer 100 equipment. The nanotubular oxide layers were fabricated by electrochemical oxidation in H3PO4 + 0.3% HF mixture for 30 min. at a constant voltage of 20V. The calcium phosphate coatings were formed by the electrochemically assisted deposition (ECAD). The presence of nanotubular oxide layers with their internal diameters ranging from 30 to 100 nm was observed by SEM (JEOL JSM-7600F). The nanotubes have dimensions that facilitated the deposition of hydroxyapatite.

Effect of the chassis parts surface condition from high-strength titanium alloy VT-22 in the process of fatigue tests

2021 ◽  
Vol 2021 (2) ◽  
pp. 45-53
Author(s):  
A. O. Gorpenko ◽  
◽  
O.I. Semenets ◽  
O. M. Doniy ◽  
K.O. Valuiska ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Surface Defects ◽  
Surface Condition ◽  
High Strength ◽  
Surface Damage ◽  
Cylindrical Part ◽  
Fatigue Tests ◽  
Landing Gear ◽  
Premature Failure ◽  
Surface Machining

The research focuses on the influence of the surface condition on the resource of high-strength titanium alloy VT-22 landing gear details during fatigue tests. The tests were performed on special facilities that simulate the workload on a rod detail at the stage of extending and retraction of the landing gear. Fatigue tests were performed on four rods. Rods № 1-3 were destroyed at the lugs level, rod №4 withstood the entire cycle of loads, and was examined in an undamaged state. It was found that the cause of the failure of the rod №1 was axial play formation as a result of bracket lug deformation, which led to shock loads on the lug of the rod №1 during the tests. The destruction of the rod №2 could be caused by the shock axial loads due to changes in the characteristics and load values of the facility on the rod №2. The priority factor influencing the premature failure of the rod №3 was the high risks from surface machining in the most loaded part of the rod №3, namely at the R-junction of the cylindrical part to the lug. The presence of surface defects formed during the manufacturing stage, as well as the presence of deep scratches in the area with high load reduce the life of rod № 3 fivefold compared to the undamaged rod № 4, which had no visible surface defects. Surface damage detected in the non-chromized area of the rods can be eliminated by blasting with subsequent surface polishing, which will provide the required resource of the detail (rod № 4). Keywords: high-strength titanium alloy VT-22, rod, fatigue tests, surface defects, structure of the surface layer.

Fretting Fatigue Wear Behavior of Cu-Al Coating on Titanium Alloy Substrate

2007 ◽  
Author(s):  
H. Lee ◽  
S. Mall
Keyword(s):  
Titanium Alloy ◽  
Contact Surface ◽  
Wear Behavior ◽  
Surface Condition ◽  
Tangential Force ◽  
Fretting Wear ◽  
Dissipated Energy ◽  
Wear Volume ◽  
Fatigue Wear ◽  
Al Coating

The fretting wear behavior of Cu-Al coating was investigated with and without fatigue load under the dry and wet (lubricated) contact conditions. The Cu-Al coating was plasma deposited on titanium alloy, Ti-6Al-4V. Wet contact condition reduced frictional force during cycling as evidenced by the lower tangential force. Wear analysis using the accumulated dissipated energy approach did not show any effect of contact surface condition. In other words, the relationship between the accumulated dissipated energy and wear volume showed a linear relationship, and it was independent of loading and contact surface conditions as well as of the fretting regime.

Anisotropic ductile failure in titanium alloy at quasi-static and high strain rates

2003 ◽  
Vol 110 ◽  
pp. 571-576 ◽  
Author(s):  
A. A. Mir ◽  
D. C. Barton ◽  
T. D. Andrews ◽  
P. Church
Keyword(s):  
Titanium Alloy ◽  
High Strain ◽  
Ductile Failure ◽  
Strain Rates ◽  
High Strain Rates
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