The Effects of Friction Stir Processing on the Microstructural Evolution and Mechanical Properties of Ti-6A1-4V Alloy
Abstract
Friction stir processing (FSP) was applied to Ti-6A1-4V alloy to modify the microstructure and improve the mechanical properties. Experiments were carried out at three different tool rotational rates: 1200, 1000, and 800 rpm. Other parameters were kept constant. the material processed at 800 rpm showed a very narrow HAZ. Hardness in the nugget region was higher than the parent material in each case. the sample processed at 1200 rpm showed an improvement of approximately 31% in YS and UTS over as-received material was observed. There was an improvement of 33% and 27% respectively in the samples processed at 1000 rpm and 800 rpm. the greatest improvement in strength after FSP was 1234 MPa, compared to 923 MPa in as-received material. This improvement was observed with no compromise in the ductility of the material (24% elongation for parent and 22-26% elongation for FSPed samples).
Recommended Citation
N. Kumar et al., "The Effects of Friction Stir Processing on the Microstructural Evolution and Mechanical Properties of Ti-6A1-4V Alloy," TMS Annual Meeting, pp. 45 - 53, The Minerals, Metals & Materials Society, Apr 2009.
Department(s)
Materials Science and Engineering
Keywords and Phrases
Friction stir processing; Mechanical property; Microhardness; Microstructure; Ti-6A1-4V
International Standard Book Number (ISBN)
978-087339737-7
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 The Minerals, Metals & Materials Society, All rights reserved.
Publication Date
01 Apr 2009
