Grain size dependence of the elastic modulus in nanostructured NiTi

Q. S. Mei; L. Zhang; K. Tsuchiya; H. Gao; T. Ohmura; K. Tsuzaki

doi:10.1016/j.scriptamat.2010.07.018

Grain size dependence of the elastic modulus in nanostructured NiTi

Q. S. Mei, L. Zhang, K. Tsuchiya, H. Gao, T. Ohmura, K. Tsuzaki

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

35 Citations (Scopus)

Abstract

Nanostructured NiTi with a graded surface nanostructure was produced by surface mechanical attrition treatment (SMAT). Nanoindentation measurements revealed that the elastic modulus of SMAT samples increased significantly with decreasing distance from the SMAT surface and grain size, reaching ∼85 GPa for a grain size of ∼6 nm at the surface. This grain size dependence of the elastic modulus was found to be due to suppression of the stress-induced martensitic transformation in nanostructured NiTi.

Original language	English
Pages (from-to)	977-980
Number of pages	4
Journal	Scripta Materialia
Volume	63
Issue number	10
DOIs	https://doi.org/10.1016/j.scriptamat.2010.07.018
Publication status	Published - Nov 2010
Externally published	Yes

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2010.07.018

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title = "Grain size dependence of the elastic modulus in nanostructured NiTi",

abstract = "Nanostructured NiTi with a graded surface nanostructure was produced by surface mechanical attrition treatment (SMAT). Nanoindentation measurements revealed that the elastic modulus of SMAT samples increased significantly with decreasing distance from the SMAT surface and grain size, reaching ∼85 GPa for a grain size of ∼6 nm at the surface. This grain size dependence of the elastic modulus was found to be due to suppression of the stress-induced martensitic transformation in nanostructured NiTi.",

author = "Mei, {Q. S.} and L. Zhang and K. Tsuchiya and H. Gao and T. Ohmura and K. Tsuzaki",

note = "Funding Information: This work was supported by International Center for Young Scientists, National Institute for Materials Science . We thank Prof. K. Lu and Mr. X. Shi for help with the SMAT experiment and Mr. T. Tanaka, Mr. H. Murakami and Dr. H. Murakami for technical assistance in sample preparation.",

year = "2010",

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doi = "10.1016/j.scriptamat.2010.07.018",

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TY - JOUR

T1 - Grain size dependence of the elastic modulus in nanostructured NiTi

AU - Mei, Q. S.

AU - Zhang, L.

AU - Tsuchiya, K.

AU - Gao, H.

AU - Ohmura, T.

AU - Tsuzaki, K.

N1 - Funding Information: This work was supported by International Center for Young Scientists, National Institute for Materials Science . We thank Prof. K. Lu and Mr. X. Shi for help with the SMAT experiment and Mr. T. Tanaka, Mr. H. Murakami and Dr. H. Murakami for technical assistance in sample preparation.

PY - 2010/11

Y1 - 2010/11

N2 - Nanostructured NiTi with a graded surface nanostructure was produced by surface mechanical attrition treatment (SMAT). Nanoindentation measurements revealed that the elastic modulus of SMAT samples increased significantly with decreasing distance from the SMAT surface and grain size, reaching ∼85 GPa for a grain size of ∼6 nm at the surface. This grain size dependence of the elastic modulus was found to be due to suppression of the stress-induced martensitic transformation in nanostructured NiTi.

AB - Nanostructured NiTi with a graded surface nanostructure was produced by surface mechanical attrition treatment (SMAT). Nanoindentation measurements revealed that the elastic modulus of SMAT samples increased significantly with decreasing distance from the SMAT surface and grain size, reaching ∼85 GPa for a grain size of ∼6 nm at the surface. This grain size dependence of the elastic modulus was found to be due to suppression of the stress-induced martensitic transformation in nanostructured NiTi.

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JO - Scripta Materialia

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Grain size dependence of the elastic modulus in nanostructured NiTi

Abstract

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