Effect of grain size on compressive behaviour of titanium at different strain rates

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

doi:10.1016/j.msea.2015.08.031

Effect of grain size on compressive behaviour of titanium at different strain rates

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

^*此作品的通讯作者

材料学院

科研成果: 期刊稿件 › 文章 › 同行评审

24 引用（Scopus）

摘要

An investigation was conducted to evaluate the dependence on grain size of the compressive deformation of commercial purity (CP) Ti. Tests were performed at room temperature using grain sizes from coarse-grained CG (20μm) to ultrafine-grained UFG (500nm) and nanocrystalline NC (90nm) with testing strain rates in the range from 0.01 to 10s^-1. The results show the flow stress and the strain rate sensitivity of CP Ti increase with decreasing grain size. Work hardening dominates at all strain rates in CG Ti but it balances with flow softening at 0.01 and 0.1s^-1 in UFG and NC Ti and there is obvious flow softening in these two materials at 10s^-1.

源语言	英语
页（从-至）	311-317
页数	7
期刊	Materials Science and Engineering: A
卷	645
DOI	https://doi.org/10.1016/j.msea.2015.08.031
出版状态	已出版 - 1 10月 2015

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10.1016/j.msea.2015.08.031

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title = "Effect of grain size on compressive behaviour of titanium at different strain rates",

abstract = "An investigation was conducted to evaluate the dependence on grain size of the compressive deformation of commercial purity (CP) Ti. Tests were performed at room temperature using grain sizes from coarse-grained CG (20μm) to ultrafine-grained UFG (500nm) and nanocrystalline NC (90nm) with testing strain rates in the range from 0.01 to 10s-1. The results show the flow stress and the strain rate sensitivity of CP Ti increase with decreasing grain size. Work hardening dominates at all strain rates in CG Ti but it balances with flow softening at 0.01 and 0.1s-1 in UFG and NC Ti and there is obvious flow softening in these two materials at 10s-1.",

keywords = "Compressive deformation, Flow softening, Grain size effects, Strain rate sensitivity, Titanium",

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

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

year = "2015",

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doi = "10.1016/j.msea.2015.08.031",

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TY - JOUR

T1 - Effect of grain size on compressive behaviour of titanium at different strain rates

AU - Zhang, Shixiong

AU - Wang, Ying Chun

AU - Zhilyaev, Alexander P.

AU - Korznikova, Elena

AU - Li, Shukui

AU - Raab, Georgy I.

AU - Langdon, Terence G.

PY - 2015/10/1

Y1 - 2015/10/1

N2 - An investigation was conducted to evaluate the dependence on grain size of the compressive deformation of commercial purity (CP) Ti. Tests were performed at room temperature using grain sizes from coarse-grained CG (20μm) to ultrafine-grained UFG (500nm) and nanocrystalline NC (90nm) with testing strain rates in the range from 0.01 to 10s-1. The results show the flow stress and the strain rate sensitivity of CP Ti increase with decreasing grain size. Work hardening dominates at all strain rates in CG Ti but it balances with flow softening at 0.01 and 0.1s-1 in UFG and NC Ti and there is obvious flow softening in these two materials at 10s-1.

AB - An investigation was conducted to evaluate the dependence on grain size of the compressive deformation of commercial purity (CP) Ti. Tests were performed at room temperature using grain sizes from coarse-grained CG (20μm) to ultrafine-grained UFG (500nm) and nanocrystalline NC (90nm) with testing strain rates in the range from 0.01 to 10s-1. The results show the flow stress and the strain rate sensitivity of CP Ti increase with decreasing grain size. Work hardening dominates at all strain rates in CG Ti but it balances with flow softening at 0.01 and 0.1s-1 in UFG and NC Ti and there is obvious flow softening in these two materials at 10s-1.

KW - Compressive deformation

KW - Flow softening

KW - Grain size effects

KW - Strain rate sensitivity

KW - Titanium

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DO - 10.1016/j.msea.2015.08.031

M3 - Article

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SN - 0921-5093

VL - 645

SP - 311

EP - 317

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

Effect of grain size on compressive behaviour of titanium at different strain rates

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