Influence of spark plasma sintering and subsequent hot rolling on microstructure and flexural behavior of in-situ TiB and TiC reinforced Ti-6Al-4V composite
نویسنده:
, , , , , ,سال
: 2015
چکیده: Powder mixture consisting of Ti6Al4V and B4C was sintered at 1100°C by spark plasma sintering (SPS) to produce Ti – alloy matrix composite reinforced by in-situ TiB whiskers (TiBw) and TiC particles (TiCp). The reinforcement content was chosen in the range of 0.5-2 vol.% TiBw and 0.12-0.5 vol.% TiCp. In order to investigate the effect of hot deformation on microstructure and mechanical properties of the composites, hot rolling was performed at 900°C with 66% reduction ratio. The microstructure parameters such as lamellar colony size, alpha layer spacing and aspect ratio of whiskers were measured using image analysis. The results showed refinement of alternate α/β lamellae and alignment of TiBw in rolling direction of the rolled samples. Three-point bending test results showed that among the sintered samples, the Ti6Al4V-0.5vol.%TiBw-0.12vol.%TiCp sample gained the highest flexural yield strength, equal to 1850 MPa. After hot rolling with 66% reduction, the maximum flexural strength reached 2100 MPa in Ti6Al4V-1vol.%TiBw-0.23vol.%TiCp composite. Fractography of the composite samples processed by SPS showed that clustering of whiskers caused a reduction in flexural strength at higher reinforcement contents.
کلیدواژه(گان): Ti6Al4V,TiB whiskers,TiC particles,sintering,rolling,flexural behavior
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Influence of spark plasma sintering and subsequent hot rolling on microstructure and flexural behavior of in-situ TiB and TiC reinforced Ti-6Al-4V composite
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contributor author | سعید قسمتی تبریزی | en |
contributor author | سیدعبدالکریم سجادی | en |
contributor author | ابوالفضل باباخانی | en |
contributor author | Weijie Lu | en |
contributor author | Saeid GHESMATITABRIZI | fa |
contributor author | Seyed Abdolkarim Sajjadi | fa |
contributor author | Abolfazl Babakhani | fa |
date accessioned | 2020-06-06T13:21:16Z | |
date available | 2020-06-06T13:21:16Z | |
date issued | 2015 | |
identifier uri | http://libsearch.um.ac.ir:80/fum/handle/fum/3351456 | |
description abstract | Powder mixture consisting of Ti6Al4V and B4C was sintered at 1100°C by spark plasma sintering (SPS) to produce Ti – alloy matrix composite reinforced by in-situ TiB whiskers (TiBw) and TiC particles (TiCp). The reinforcement content was chosen in the range of 0.5-2 vol.% TiBw and 0.12-0.5 vol.% TiCp. In order to investigate the effect of hot deformation on microstructure and mechanical properties of the composites, hot rolling was performed at 900°C with 66% reduction ratio. The microstructure parameters such as lamellar colony size, alpha layer spacing and aspect ratio of whiskers were measured using image analysis. The results showed refinement of alternate α/β lamellae and alignment of TiBw in rolling direction of the rolled samples. Three-point bending test results showed that among the sintered samples, the Ti6Al4V-0.5vol.%TiBw-0.12vol.%TiCp sample gained the highest flexural yield strength, equal to 1850 MPa. After hot rolling with 66% reduction, the maximum flexural strength reached 2100 MPa in Ti6Al4V-1vol.%TiBw-0.23vol.%TiCp composite. Fractography of the composite samples processed by SPS showed that clustering of whiskers caused a reduction in flexural strength at higher reinforcement contents. | en |
language | English | |
title | Influence of spark plasma sintering and subsequent hot rolling on microstructure and flexural behavior of in-situ TiB and TiC reinforced Ti-6Al-4V composite | en |
type | Journal Paper | |
contenttype | External Fulltext | |
subject keywords | Ti6Al4V | en |
subject keywords | TiB whiskers | en |
subject keywords | TiC particles | en |
subject keywords | sintering | en |
subject keywords | rolling | en |
subject keywords | flexural behavior | en |
journal title | Matrials Science and Engineering A | en |
journal title | Matrials Science and Engineering A | fa |
pages | 271-278 | |
journal volume | 624 | |
journal issue | 0 | |
identifier link | https://profdoc.um.ac.ir/paper-abstract-1044469.html | |
identifier articleid | 1044469 |