Effect of temperature on microstructural stabilization and mechanical properties in the dynamic testing of nanocrystalline pure Ti

Shixiong Zhang; Ying Chun Wang; Alexander P. Zhilyaev; Dmitry V. Gunderov; Shukui Li; Georgy I. Raab; Elena Korznikova; Terence G. Langdon

doi:10.1016/j.msea.2015.03.032

Effect of temperature on microstructural stabilization and mechanical properties in the dynamic testing of nanocrystalline pure Ti

Shixiong Zhang
, Ying Chun Wang^*
, Alexander P. Zhilyaev
, Dmitry V. Gunderov
, Shukui Li
, Georgy I. Raab
, Elena Korznikova
, Terence G. Langdon

^*此作品的通讯作者

材料学院

Beijing Institute of Technology
Russian Academy of Sciences
Peter the Great St. Petersburg Polytechnic University
Ufa University of Science and Technology
University of Southampton

科研成果: 期刊稿件 › 文章 › 同行评审

17 引用（Scopus）

摘要

Commercial purity (CP) Ti was processed by a two-step procedure of ECAP and drawing to give a nanocrystalline (NC) grain size of ~90nm. Samples were tested in compression at a strain rate of 10s^-1 over the temperature range of 298-673K. The results show the high stored energy and high interface energy promote the process of static recrystallization (SRX) when the NC Ti is heated above 573K. Migration dynamic recrystallization (m-DRX) operates during compressive deformation at temperatures of 298-573K giving a homogeneous microstructure. The compressive yield strength and peak stress at 298K were measured as 1230 and 1330MPa, respectively. When the test temperature is increased from 298 to 673K, the yield strength and peak stress decrease and the work hardening rate and dynamic softening rate are also reduced.

源语言	英语
页（从-至）	64-70
页数	7
期刊	Materials Science and Engineering: A
卷	634
DOI	https://doi.org/10.1016/j.msea.2015.03.032
出版状态	已出版 - 4 5月 2015

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@article{674e61cce5c14a2394d4e28ea2ed24ea,

title = "Effect of temperature on microstructural stabilization and mechanical properties in the dynamic testing of nanocrystalline pure Ti",

abstract = "Commercial purity (CP) Ti was processed by a two-step procedure of ECAP and drawing to give a nanocrystalline (NC) grain size of \textasciitilde{}90nm. Samples were tested in compression at a strain rate of 10s-1 over the temperature range of 298-673K. The results show the high stored energy and high interface energy promote the process of static recrystallization (SRX) when the NC Ti is heated above 573K. Migration dynamic recrystallization (m-DRX) operates during compressive deformation at temperatures of 298-573K giving a homogeneous microstructure. The compressive yield strength and peak stress at 298K were measured as 1230 and 1330MPa, respectively. When the test temperature is increased from 298 to 673K, the yield strength and peak stress decrease and the work hardening rate and dynamic softening rate are also reduced.",

keywords = "Drawing, Dynamic testing, Equal-channel angular pressing, Microstructure, Titanium",

author = "Shixiong Zhang and Wang, \{Ying Chun\} and Zhilyaev, \{Alexander P.\} and Gunderov, \{Dmitry V.\} and Shukui Li and Raab, \{Georgy I.\} and Elena Korznikova and Langdon, \{Terence G.\}",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2015",

month = may,

day = "4",

doi = "10.1016/j.msea.2015.03.032",

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journal = "Materials Science and Engineering: A",

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TY - JOUR

T1 - Effect of temperature on microstructural stabilization and mechanical properties in the dynamic testing of nanocrystalline pure Ti

AU - Zhang, Shixiong

AU - Wang, Ying Chun

AU - Zhilyaev, Alexander P.

AU - Gunderov, Dmitry V.

AU - Li, Shukui

AU - Raab, Georgy I.

AU - Korznikova, Elena

AU - Langdon, Terence G.

PY - 2015/5/4

Y1 - 2015/5/4

N2 - Commercial purity (CP) Ti was processed by a two-step procedure of ECAP and drawing to give a nanocrystalline (NC) grain size of ~90nm. Samples were tested in compression at a strain rate of 10s-1 over the temperature range of 298-673K. The results show the high stored energy and high interface energy promote the process of static recrystallization (SRX) when the NC Ti is heated above 573K. Migration dynamic recrystallization (m-DRX) operates during compressive deformation at temperatures of 298-573K giving a homogeneous microstructure. The compressive yield strength and peak stress at 298K were measured as 1230 and 1330MPa, respectively. When the test temperature is increased from 298 to 673K, the yield strength and peak stress decrease and the work hardening rate and dynamic softening rate are also reduced.

AB - Commercial purity (CP) Ti was processed by a two-step procedure of ECAP and drawing to give a nanocrystalline (NC) grain size of ~90nm. Samples were tested in compression at a strain rate of 10s-1 over the temperature range of 298-673K. The results show the high stored energy and high interface energy promote the process of static recrystallization (SRX) when the NC Ti is heated above 573K. Migration dynamic recrystallization (m-DRX) operates during compressive deformation at temperatures of 298-573K giving a homogeneous microstructure. The compressive yield strength and peak stress at 298K were measured as 1230 and 1330MPa, respectively. When the test temperature is increased from 298 to 673K, the yield strength and peak stress decrease and the work hardening rate and dynamic softening rate are also reduced.

KW - Drawing

KW - Dynamic testing

KW - Equal-channel angular pressing

KW - Microstructure

KW - Titanium

UR - https://www.scopus.com/pages/publications/84925678114

U2 - 10.1016/j.msea.2015.03.032

DO - 10.1016/j.msea.2015.03.032

M3 - Article

AN - SCOPUS:84925678114

SN - 0921-5093

VL - 634

SP - 64

EP - 70

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

Effect of temperature on microstructural stabilization and mechanical properties in the dynamic testing of nanocrystalline pure Ti

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