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

^*Corresponding author for this work

School of Material Science and Engineering

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

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.

Original language	English
Pages (from-to)	311-317
Number of pages	7
Journal	Materials Science and Engineering: A
Volume	645
DOIs	https://doi.org/10.1016/j.msea.2015.08.031
Publication status	Published - 1 Oct 2015

Keywords

Compressive deformation
Flow softening
Grain size effects
Strain rate sensitivity
Titanium

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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.}",

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year = "2015",

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

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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

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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

Abstract

Keywords

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