Thermal analyses and weight gain modeling study on Ti–Al – based intermetallic coated Ti6Al4V alloy-Reference-Cited by-同舟云学术

Thermal analyses and weight gain modeling study on Ti–Al – based intermetallic coated Ti6Al4V alloy

Published:2024-02-22 Issue:5 Volume:66 Page:736-743
ISSN:0025-5300
Container-title:Materials Testing
language:en
Short-container-title:

Author:

Yener Tuba¹,Yılmaz Ferhat²³,Yener Suayb Cagrı⁴⁵,Celebi Efe Gozde Fatma⁶

Affiliation:

1. Metallurgy and Materials Engineering, Engineering Faculty , Sakarya 54050 , Türkiye

2. Institute of Natural Sciences , Sakarya University , Sakarya 54050 , Türkiye

3. Sakarya Üniversitesi Teknokent , Kopuz Mühendislik , Sakarya 54050 , Türkiye

4. Electric and Electronic Engineering, Engineering Faculty , Sakarya University , Sakarya 54050 , Türkiye

5. Sakarya University Center for Electromagnetic Applications and Researches (SEMAM) , Sakarya University 54050 , Türkiye

6. Materials an Metalurgy , Sakarya University of Applied Sciences , Sakarya 54100 , Türkiye

Abstract

Abstract Ti6Al4V alloy is a commonly used α + β alloy among titanium alloys. In this study, in order to improve the oxidation resistance of the Ti6Al4V alloy, Ti–Al – based aluminum coating was deposited to the surface by the pack cementation method. The aluminizing process was carried out in an open atmosphere oven at 700 °C for 4 and 6 h. It has been observed that the coating layer thickness varies between 13 and 17 µm depending on the duration of cementation process. From XRD analysis, it has been detected the TiAl3, TiAl2, and TiAl phases on the coating layer. Aluminum coated and untreated Ti6Al4V alloys were subjected to oxidation tests at 800, 850, and 900 °C for 4, 20, and 40 h. The obtained nonlinear weight gain characteristic has been modeled to determine the coating status of the samples. It was determined that the highest weight gain was in the untreated sample. Using the provided model, samples were classified in terms of coating condition by systematic approach based on weight gain profile versus time. Oxidation tests also supported with DTA and TG analyses.

Publisher

Walter de Gruyter GmbH

Link

https://www.degruyter.com/document/doi/10.1515/mt-2023-0392/pdf

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