Microstructures and mechanical properties of Ti-6Al-7Nb processed by high-pressure torsion

Maki Ashida, Peng Chen, Hisashi Doi, Yusuke Tsutsumi, Takao Hanawa, Zenji Horita

Research output: Contribution to journalConference article

6 Citations (Scopus)

Abstract

Ti-6Al-7Nb was deformed by high-pressure torsion to improve the mechanical properties of the alloy. high-pressure torsion was conducted at room temperature under pressures of 2 and 6 GPa for disk-shaped specimens. Microstructure was characterized by transmission electron microscopy (TEM) and X-ray diffraction analysis (XRD). Mechanical properties were evaluated by tensile test and Vickers microhardness measurement. The grain size was refined to about 100 nm after highpressure torsion processing under 6 GPa through 5 revolutions. Hardness increased with straining by high-pressure torsion and the values after high-pressure torsion processing under 6 GPa were higher than those under 2 GPa. Tensile strength after highpressure torsion processing of all conditions was higher than that before high-pressure torsion processing. It was found that microstructure and mechanical properties were improved by high-pressure torsion processing.

Original languageEnglish
Pages (from-to)1523-1528
Number of pages6
JournalProcedia Engineering
Volume81
DOIs
Publication statusPublished - Jan 1 2014
Event11th International Conference on Technology of Plasticity, ICTP 2014 - Nagoya, Japan
Duration: Oct 19 2014Oct 24 2014

Fingerprint

Torsional stress
Mechanical properties
Microstructure
Processing
Microhardness
X ray diffraction analysis
Tensile strength
Hardness
Transmission electron microscopy

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Microstructures and mechanical properties of Ti-6Al-7Nb processed by high-pressure torsion. / Ashida, Maki; Chen, Peng; Doi, Hisashi; Tsutsumi, Yusuke; Hanawa, Takao; Horita, Zenji.

In: Procedia Engineering, Vol. 81, 01.01.2014, p. 1523-1528.

Research output: Contribution to journalConference article

Ashida, Maki ; Chen, Peng ; Doi, Hisashi ; Tsutsumi, Yusuke ; Hanawa, Takao ; Horita, Zenji. / Microstructures and mechanical properties of Ti-6Al-7Nb processed by high-pressure torsion. In: Procedia Engineering. 2014 ; Vol. 81. pp. 1523-1528.
@article{859bb404da6a41b0b10886a41abe7acd,
title = "Microstructures and mechanical properties of Ti-6Al-7Nb processed by high-pressure torsion",
abstract = "Ti-6Al-7Nb was deformed by high-pressure torsion to improve the mechanical properties of the alloy. high-pressure torsion was conducted at room temperature under pressures of 2 and 6 GPa for disk-shaped specimens. Microstructure was characterized by transmission electron microscopy (TEM) and X-ray diffraction analysis (XRD). Mechanical properties were evaluated by tensile test and Vickers microhardness measurement. The grain size was refined to about 100 nm after highpressure torsion processing under 6 GPa through 5 revolutions. Hardness increased with straining by high-pressure torsion and the values after high-pressure torsion processing under 6 GPa were higher than those under 2 GPa. Tensile strength after highpressure torsion processing of all conditions was higher than that before high-pressure torsion processing. It was found that microstructure and mechanical properties were improved by high-pressure torsion processing.",
author = "Maki Ashida and Peng Chen and Hisashi Doi and Yusuke Tsutsumi and Takao Hanawa and Zenji Horita",
year = "2014",
month = "1",
day = "1",
doi = "10.1016/j.proeng.2014.10.184",
language = "English",
volume = "81",
pages = "1523--1528",
journal = "Procedia Engineering",
issn = "1877-7058",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Microstructures and mechanical properties of Ti-6Al-7Nb processed by high-pressure torsion

AU - Ashida, Maki

AU - Chen, Peng

AU - Doi, Hisashi

AU - Tsutsumi, Yusuke

AU - Hanawa, Takao

AU - Horita, Zenji

PY - 2014/1/1

Y1 - 2014/1/1

N2 - Ti-6Al-7Nb was deformed by high-pressure torsion to improve the mechanical properties of the alloy. high-pressure torsion was conducted at room temperature under pressures of 2 and 6 GPa for disk-shaped specimens. Microstructure was characterized by transmission electron microscopy (TEM) and X-ray diffraction analysis (XRD). Mechanical properties were evaluated by tensile test and Vickers microhardness measurement. The grain size was refined to about 100 nm after highpressure torsion processing under 6 GPa through 5 revolutions. Hardness increased with straining by high-pressure torsion and the values after high-pressure torsion processing under 6 GPa were higher than those under 2 GPa. Tensile strength after highpressure torsion processing of all conditions was higher than that before high-pressure torsion processing. It was found that microstructure and mechanical properties were improved by high-pressure torsion processing.

AB - Ti-6Al-7Nb was deformed by high-pressure torsion to improve the mechanical properties of the alloy. high-pressure torsion was conducted at room temperature under pressures of 2 and 6 GPa for disk-shaped specimens. Microstructure was characterized by transmission electron microscopy (TEM) and X-ray diffraction analysis (XRD). Mechanical properties were evaluated by tensile test and Vickers microhardness measurement. The grain size was refined to about 100 nm after highpressure torsion processing under 6 GPa through 5 revolutions. Hardness increased with straining by high-pressure torsion and the values after high-pressure torsion processing under 6 GPa were higher than those under 2 GPa. Tensile strength after highpressure torsion processing of all conditions was higher than that before high-pressure torsion processing. It was found that microstructure and mechanical properties were improved by high-pressure torsion processing.

UR - http://www.scopus.com/inward/record.url?scp=84949116333&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84949116333&partnerID=8YFLogxK

U2 - 10.1016/j.proeng.2014.10.184

DO - 10.1016/j.proeng.2014.10.184

M3 - Conference article

AN - SCOPUS:84949116333

VL - 81

SP - 1523

EP - 1528

JO - Procedia Engineering

JF - Procedia Engineering

SN - 1877-7058

ER -