scholarly journals An X-ray Study on the Aging Process of a Cu-4%Ti Alloy

1977 ◽  
Vol 18 (5) ◽  
pp. 393-402 ◽  
Author(s):  
Tokuzou Tsujimoto
Keyword(s):  
Aging Process ◽  
Ti Alloy ◽  
X Ray

THE STUDY ON GRANTING BIOACTIVITY OF Ti ALLOY BY SURFACE TREATMENT

2010 ◽  
Vol 17 (02) ◽  
pp. 153-157 ◽  
Author(s):  
N. R. HA ◽  
Z. X. YANG ◽  
G. C. KIM ◽  
K. H. HWANG ◽  
D. S. SEO ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Body Fluid ◽  
Surface Effect ◽  
In Vitro Test ◽  
Ti Alloy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Chemical Surface ◽  
Vitro Test

Titanium alloys are superior of biocompatibility, mechanical properties and chemical stability. The biocompatibility of Ti alloy is related to the surface effect between human tissue and implant. Therefore, the purpose of this study is to investigate the bioactivity of Ti alloy by alkali and acid chemical surface treatment; and the biocompatibility of Ti alloy was evaluated by in vitro test. Higher bone-bonding ability and bioactivity of the substrate were obtained by the formation of apatite layers on the Ti alloy in simulated body fluid. The microstructures of apatite layer were investigated by scanning electron microscope (SEM) and the formed phases were analyzed with X-ray diffraction (XRD).

Influence of Interfacial Copper on the Ti-SiO2 Reaction During Nitridation of Cu-Ti Films

1995 ◽  
Vol 398 ◽  
Author(s):  
Daniel Adams ◽  
T.L. Alford ◽  
N.D. Theodore ◽  
T. Laursen ◽  
S.W. Russell ◽  
...  
Keyword(s):  
Free Surface ◽  
High Resolution ◽  
Consumption Rate ◽  
Catalytic Effect ◽  
Energy Dispersive ◽  
Ti Alloy ◽  
Alloy Films ◽  
X Ray ◽  
20 Nm ◽  
Ti Films

ABSTRACTCu(90 nm)/Ti(20 nm) bilayers and Cu(Ti 27 at.%) alloy films were deposited on SiO2 and annealed in an NH3 ambient at temperatures 400–700° C for 30 min. During annealing Ti segregated to both the free surface and the alloy/SiO2 interface. At the surface Ti reacted with NH3 to form TiN, whereas at the interface the Ti reacted with the SiO2 to form a TiO/Ti5Si3 structure. High resolution energy dispersive x-ray analysis revealed the presence of interfacial Cu between the Ti-silicide and Ti-oxide layers at temperatures greater than 450°C. Using Cu-Ti alloy films enhanced the Si02 consumption rate by a factor of 3-4 compared to that of pure Ti. It is suggested that the interfacial Cu is responsible for the increased rate. It is plausible that an interfacial Cu2O component has a catalytic effect on the Ti- SiO2 reaction.

Effect of aging process on the microstructure and properties of Cu–Cr–Ti alloy

2021 ◽  
Vol 802 ◽  
pp. 140598
Author(s):  
Shaoli Fu ◽  
Ping Liu ◽  
Xiaohong Chen ◽  
Honglei Zhou ◽  
Fengcang Ma ◽  
...  
Keyword(s):  
Aging Process ◽  
Ti Alloy ◽  
Microstructure And Properties

scholarly journals COMPUTER SIMULATION OF X-RAY DIFFRACTION PROFILES AND TEM DIFFRACTION PATTERNS ON ORDERING FOR Cu-4wt%Ti ALLOY

2000 ◽  
Vol 49 (5) ◽  
pp. 926
Author(s):  
WANG LIU-DING ◽  
CHEN CHANG-LE ◽  
LIU LIN ◽  
KANG MO-KUANG ◽  
JI BANG-JIE ◽  
...  
Keyword(s):  
Computer Simulation ◽  
Ti Alloy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Diffraction Patterns

scholarly journals X-ray Study of Aging Behaviour of Ni-10%Ti Alloy Plate and Powder

1975 ◽  
Vol 39 (5) ◽  
pp. 436-444 ◽  
Author(s):  
Kenki Hashimoto ◽  
Tokuzo Tsujimoto
Keyword(s):  
Ti Alloy ◽  
Alloy Plate ◽  
X Ray

Heat Treatment and Oxidation Characteristics of Nb-20Mo-15Si-5B-20(Cr,Ti) Alloys from 700 to 1400°C

2010 ◽  
Vol 638-642 ◽  
pp. 2351-2356 ◽  
Author(s):  
Sylvia Natividad ◽  
Arianna Acosta ◽  
Krista Amato ◽  
Julieta Ventura ◽  
Benedict Protillo ◽  
...  
Keyword(s):  
Unit Area ◽  
Annealing Treatment ◽  
Microstructural Characterization ◽  
Solution Phase ◽  
Solid Solution Phase ◽  
Ti Alloy ◽  
X Ray ◽  
Ti Alloys ◽  
Higher Temperature ◽  
Oxidation In Air

Nb-20Mo-15Si-5B-20(Cr,Ti) alloys have been subjected to annealing treatment for 2 hours in a range of temperatures from 700 to 1400oC and quenched in water to perform the microstructural characterization for these two new alloys. As cast structure consists of a solid solution phase, , and silicides (Nb5Si3) in both alloys but Cr alloy also contains NbCr2 and Nb3Si phases. Heating to higher temperature introduces Ti silicides in the microstructure for Ti alloy. The oxidation in air has been conducted on these alloys in the same temperature range for 24 hours. Weight gain per unit area as a function of temperature provides the oxidation curves while characterization techniques using SEM, EDS on SEM, x-ray mapping, and XRD has yielded the analyses of the oxide scale. The scale consists of various oxides of Nb, Mo, Cr, Si, and Ti. Cr alloy appears to offer higher oxidation resistance in the selected range of oxidation temperatures.

scholarly journals Microstructure and Properties of Bulk Ultrafine-Grained Cu1.5Cr0.1Si Alloy through ECAP by Route C and Aging Treatment

Crystals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 207 ◽  
Author(s):  
Tingbiao Guo ◽  
Xiaoyang Tai ◽  
Shiru Wei ◽  
Junjie Wang ◽  
Zhi Jia ◽  
...  
Keyword(s):  
Aging Process ◽  
Room Temperature ◽  
Aging Treatment ◽  
Material Strength ◽  
X Ray Diffraction ◽  
Channel Angle ◽  
X Ray ◽  
Ultrafine Grained ◽  
The Rich ◽  
Electron Back Scattered Diffraction

The evolutions of the microstructure and its effect on the mechanical and electrical conductivity properties of Cu1.5Cr0.1Si alloy after equal channel angle pressing (ECAP)-C path deformation and aging treatment have been investigated using scanning electron microscopy (SEM), x-ray diffraction (XRD), and electron back-scattered diffraction (EBSD). It was found that after the ECAP-C deformation at room temperature, with an extension of aging time, the strong (111) macro orientation formed in the Cu1.5Cr0.1Si alloy. The ultrafine crystals formed by ECAP and the rich chromium phase precipitated along grain boundaries during the aging process greatly improved the material strength. After aging at 350 °C for 4 h, the tensile strength, elongation, and conductivity reached 528 MPa, 15.27%, and 78.9% IACS, respectively. The fracture mode of the alloy was ductile fracture. The steady-oriented {111} <110> texture was beneficial to improving the conductivity of the material.

Effect of Dislocations on Spinodal Decomposition, Precipitation, and Age-hardening of Cu–Ti Alloy

2015 ◽  
Vol 34 (2) ◽  
Author(s):  
Shigeo Sato ◽  
Akifumi Hasegawa ◽  
Satoshi Semboshi ◽  
Kazuaki Wagatsuma
Keyword(s):  
Aging Time ◽  
Spinodal Decomposition ◽  
Cold Working ◽  
Cold Work ◽  
Age Hardening ◽  
Precipitate Size ◽  
Ti Alloy ◽  
X Ray ◽  
Ti Alloys ◽  
Spinodal Region

AbstractIn age-hardenable Cu–Ti alloys, cold work before aging enhances their mechanical properties and shortens the aging time for obtaining the maximum hardness. In order to discuss hardening behaviors, microstructural evolutions such as dislocation rearrangements, progress of spinodal decomposition, and subsequent precipitation from the spinodal region during aging need to be analyzed precisely. Therefore, we employed a probing method combining the small- and the wide-angle X-ray scattering methods to characterize the precipitate size and the progress of spinodal decomposition, respectively. Sideband peaks appearing adjacent to Bragg reflection peaks in the X-ray diffraction patterns of a copper matrix were analyzed to estimate the development of compositional modulations of titanium accompanied by spinodal decomposition. The results of these analytical procedures revealed that the growth rates of the spinodal region and nanometer-scales precipitates in Cu–Ti alloys are less susceptible to dislocations introduced during cold working before aging, and that dislocations introduced during prior cold working annihilate in the initial aging stage. Consequently, overaging, which is mainly induced by dislocation annihilation, in a cold-worked Cu–Ti alloy occurs after a shorter aging time than in an unworked alloy.

Investigation of Crystallization in an Amorphous Cu-Based Alloy by X-Ray

2008 ◽  
Vol 589 ◽  
pp. 131-136
Author(s):  
E. Nagy ◽  
Dóra Janovszky ◽  
Mária Svéda ◽  
Kinga Tomolya ◽  
L.K. Varga ◽  
...  
Keyword(s):  
Amorphous Alloys ◽  
Crystallization Process ◽  
Reference Data ◽  
Diffraction Method ◽  
Research Field ◽  
High Price ◽  
Ti Alloy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Significant Research

Recently one of the most significant research-field in the development of amorphous alloys is the research of the Cu-based amorphous alloys. The Zr-based alloys developed earlier can be replaced by the newly developed Cu-based alloys as the high price of the Zr-based alloys limits their utilization in spite of their favourable properties. Production of Cu-based alloys having the same or more favourite properties than Zr-based alloys is cheaper and this fact can promote their increasing utilization. Cu-Zr-Ti and Cu-Hf-Ti alloy systems – they are Cu-based alloys – have excellent mechanical properties. In this paper investigations of crystallization of amorphous Cu44,25Zr36Ag14,75Ti5 powder produced by ball milling (these processes have not been investigated yet according to the reference data) are described. In the course of investigation of the crystallization process, samples were heated to a temperature of investigation by means of a DSC equipment and the developed state was frozen by chilling. The investigation of the developed structure and to identify the phases formed during heat treatment, X-ray diffraction method was used.

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