Development of Nanolayer Hydroxyapatite (HA) on Titanium Alloy via Superplastic Deformation Method

2012 ◽  
Vol 43 (10) ◽  
pp. 3776-3785 ◽  
Author(s):  
Hidayah Mohd Khalid ◽  
Iswadi Jauhari ◽  
Adibah Haneem Mohamad Dom
2006 ◽  
Vol 326-328 ◽  
pp. 785-788
Author(s):  
Raden Dadan Ramdan ◽  
Iswadi Jauhari ◽  
Rafidah Hasan ◽  
Nik Rozlin Nik Masdek ◽  
Fadzil Ayad Zakaria ◽  
...  

The effect of carbonated apatite powder size on the carbonated apatite embedded on titanium alloy was studied. The process was conducted using superplastic deformation method at 750oC and initial pressure of 34MPa. In order to evaluate the characteristics of the resulting embedded layer, X-ray diffraction method was conducted followed with microstructure characterization. From X-ray diffraction characterization, it can be concluded that small stress layers of carbonated apatite were resulted for all samples with different initial powder size. In addition, initial powder size of carbonated apatite only significantly influences the intensity of diffraction peak for certain plane of crystal structure. From the experimental results, it can also be concluded that superplastic deformation can be used as an alternative method for the coating process of bio apatite material on titanium alloy substrate


Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 906
Author(s):  
Dong Han ◽  
Yongqing Zhao ◽  
Weidong Zeng

The present study focuses on the effect of 1% Zr addition on the microstructure, tensile properties and superplasticity of a forged SP700 alloy. The results demonstrated that Zr has a significant effect on inhibiting the microstructural segregation and increasing the volume fraction of β-phase in the forged SP700 alloy. After annealing at 820 °C for 1 h and aging at 500 °C for 6 h, the SP700 alloy with 1% Zr showed a completely globular and fine microstructure. The yield strength, ultimate tensile strength and tensile elongation of the alloy with optimized microstructure were 1185 MPa, 1296 MPa and 10%, respectively. The superplastic deformation was performed at 750 °C with an elongation of 1248%. The improvement of tensile properties and superplasticity of the forged SP700 alloy by Zr addition was mainly attributed to the uniform and fine globular microstructures.


2017 ◽  
Vol 699 ◽  
pp. 71-80 ◽  
Author(s):  
Zhangguang Liu ◽  
Peijie Li ◽  
Linlin Geng ◽  
Taiying Liu ◽  
Haitao gao

2019 ◽  
Vol 291 ◽  
pp. 183-192
Author(s):  
Vyacheslav Titov ◽  
Tetiana Garanenko

The method and unit for experimental research of membrane formation from titanium alloys under conditions of superplastic is developed, which allows to determine necessary parameters of deformation. The unit is designed to deform titanium sheets in isothermal conditions by applying a uniform distributed load. When membrane is formed by a gas medium, a biaxial tension is realized. This type of test is used to assess the plastic properties of metals. In this work, the limiting deformations of the sheet titanium alloy OT4-0 have been evaluated in the formation of the membrane. Installed during the process of superplastic deformation the connection between the external parameters of deformation (force, temperature) with the depth of formation of the membrane in time and strain distribution along its generatrix.


Metals ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. 568 ◽  
Author(s):  
Ahmed Mosleh ◽  
Anastasia Mikhaylovskaya ◽  
Anton Kotov ◽  
Theo Pourcelot ◽  
Sergey Aksenov ◽  
...  

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