Publication:
On the physical and mechanical properties of spark plasma sintered pure Ti and Ti-TiB composite

Placeholder

Organizational Units

Program

KU Authors

Co-Authors

Mohammadzadeh, Ahad
Namini, Abbas Sabahi
Azadbeh, Maziyar

Advisor

Publication Date

Language

English

Journal Title

Journal ISSN

Volume Title

Abstract

The physical and mechanical properties of spark plasma sintered pure Ti and Ti-TiB2 composite were investigated as a function of TiB2 concentration and sintering temperature. Experiments were conducted using the response surface methodology based on a full factorial design in order to model and evaluate the responses, namely sintered density, porosity, ultimate tensile strength, elongation, bending strength and micro-hardness. Analysis of variance was performed to evaluate the acceptability of the developed models. In order to confirm the accuracy of developed models, results of analyses by x-ray diffraction, optical and scanning electron microscopy from polished and fracture surfaces were investigated, in details. It was concluded that the sintering temperature has the most pronounced effect on the sintered density, porosity, and micro-hardness, while the TiB2 has the most pronounced effect on the ultimate tensile strength, elongation, and bending strength. Results showed that by introducing of TiB2 the strengthening occurs through grain refinement of matrix and in-situ formation of TiB needle like phases. Finally, it is concluded that the predicted values of responses obtained using mathematical models were in good agreement with the microstructural characteristics of sintered samples and optimum conditions for getting desired properties obtained using purposed models.

Description

Source:

Materials Research Express

Publisher:

Institute of Physics (IOP) Publishing

Keywords:

Subject

Materials science

Citation

Endorsement

Review

Supplemented By

Referenced By

Copy Rights Note

2

Views

0

Downloads

View PlumX Details