Studying the Effects of Gas Heat Treatment on the Distribution of the Doping Elements on the Surface Layer of Titanium Alloys BT9

Authors

  • Afif Barhoum

Abstract

 

In this issue, the effect of gas heat treatment ambient at the temperature of 950C for 8hours using the gases NH3 or CH4 and using  the gases NH3 and CH4 for (4+4)hours of the distribution of the doping elements on Titanium alloys BT9 was studied. Oxide formation at the different treatment ambient as a reason of gas-phase oxygen distribution to high depths in the samples was discovered. And its concentration in the two phases α and β  was almost the same, while the concentrations of C, Fe, Si  in the phases α and β was found to be agree with them in the samples before the treatment and the concentration of Mo between the little grains of phases α and β increases, [Moα]>[Moβ] from one to three times at the whole samples size, even six times at the surface layer with 60µm thickness, and the concentration of Al between the little grains of phases α and β increases, [Alβ]>[Alα] from one to two times at the surface layer with 40µm thickness. In addition to formation of inserted solid solutions of Nitrogen (TiN, Ti2N) after the Nitriding and Nitrocarburizing of the surface layer with (30-80)µm thickness. The micro hardness of the surface layer using Vickers method has been measured, and it was found to be in the range (410-470)HV0.05 . Finally, to be sure of the results, the phases and the Microstrucrure using the mining microscope and the scanning electron microscope (SEM) was studied.

Downloads

Published

2018-11-14

How to Cite

1.
Barhoum A. Studying the Effects of Gas Heat Treatment on the Distribution of the Doping Elements on the Surface Layer of Titanium Alloys BT9. TUJ-BA [Internet]. 2018Nov.14 [cited 2025Apr.5];40(5). Available from: https://journal.tishreen.edu.sy/index.php/bassnc/article/view/4634

Issue

Vol. 40 No. 5 (2018): العلوم الأساسية

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

The authors retain the copyright and grant the right to publish in the magazine for the first time with the transfer of the commercial right to the Tishreen University Journal -Basic Sciences Series  

 Under a CC BY- NC-SA 04 license that allows others to share the work with of the work's authorship and initial publication in this journal. Authors can use a copy of their articles in their scientific activity, and on their scientific websites, provided that the place of publication is indicted in Tishreen University Journal -Basic Sciences Series .  The Readers have the right to send, print and subscribe to the initial version of the article, and the title of Tishreen University Journal -Basic Sciences Series   Publisher

 

journal uses a CC BY-NC-SA license which mean

You are free to:

  • Adapt — remix, transform, and build upon the material
  •  
  • The licensor cannot revoke these freedoms as long as you follow the license terms.

 

  • Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • NonCommercial — You may not use the material for commercial purposes.
  • ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
  • No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.