An experimental and modeling study on the role of damage cascade formation in nanocrystalization of ion-irradiated Ni52.5Nb10Zr 15Ti15Pt7.5 metallic glass

Michael Myers; E. G. Fu; Michelle Myers; Haiyan Wang; Guoqiang Xie; X. Wang; W. K. Chu; Lin Shao

doi:10.1016/j.scriptamat.2010.07.027

An experimental and modeling study on the role of damage cascade formation in nanocrystalization of ion-irradiated Ni_52.5Nb₁₀Zr ₁₅Ti₁₅Pt_7.5 metallic glass

Michael Myers, E. G. Fu, Michelle Myers, Haiyan Wang, Guoqiang Xie, X. Wang, W. K. Chu, Lin Shao

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

20 Citations (Scopus)

Abstract

We have shown that 1 MeV Ni⁺ ion irradiation can cause nanocrystal formation in Ni_52.5Nb₁₀Zr₁₅Ti ₁₅Pt_7.5 metallic glass (MG). The process requires precipitate formation and subsequent crystal growth within the precipitates. Temperature evolution modeling of damage cascades suggests a locally melted region within the damage cascade with substantial temperature gradients and rapid energy dissipation, with a quenching rate much larger than MG's critical cooling rate. Thus, the damage cascade regions do not directly develop nanocrystals.

Original language	English
Pages (from-to)	1045-1048
Number of pages	4
Journal	Scripta Materialia
Volume	63
Issue number	11
DOIs	https://doi.org/10.1016/j.scriptamat.2010.07.027
Publication status	Published - 2010 Nov 1

Keywords

Crystallization
Finite element analysis
Ion irradiation
Metallic glass

ASJC Scopus subject areas

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

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10.1016/j.scriptamat.2010.07.027

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An experimental and modeling study on the role of damage cascade formation in nanocrystalization of ion-irradiated Ni_52.5Nb₁₀Zr ₁₅Ti₁₅Pt_7.5 metallic glass. / Myers, Michael; Fu, E. G.; Myers, Michelle; Wang, Haiyan; Xie, Guoqiang; Wang, X.; Chu, W. K.; Shao, Lin.

In: Scripta Materialia, Vol. 63, No. 11, 01.11.2010, p. 1045-1048.

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

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abstract = "We have shown that 1 MeV Ni+ ion irradiation can cause nanocrystal formation in Ni52.5Nb10Zr15Ti 15Pt7.5 metallic glass (MG). The process requires precipitate formation and subsequent crystal growth within the precipitates. Temperature evolution modeling of damage cascades suggests a locally melted region within the damage cascade with substantial temperature gradients and rapid energy dissipation, with a quenching rate much larger than MG's critical cooling rate. Thus, the damage cascade regions do not directly develop nanocrystals.",

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AU - Myers, Michael

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AU - Myers, Michelle

AU - Wang, Haiyan

AU - Xie, Guoqiang

AU - Wang, X.

AU - Chu, W. K.

AU - Shao, Lin

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N2 - We have shown that 1 MeV Ni+ ion irradiation can cause nanocrystal formation in Ni52.5Nb10Zr15Ti 15Pt7.5 metallic glass (MG). The process requires precipitate formation and subsequent crystal growth within the precipitates. Temperature evolution modeling of damage cascades suggests a locally melted region within the damage cascade with substantial temperature gradients and rapid energy dissipation, with a quenching rate much larger than MG's critical cooling rate. Thus, the damage cascade regions do not directly develop nanocrystals.

AB - We have shown that 1 MeV Ni+ ion irradiation can cause nanocrystal formation in Ni52.5Nb10Zr15Ti 15Pt7.5 metallic glass (MG). The process requires precipitate formation and subsequent crystal growth within the precipitates. Temperature evolution modeling of damage cascades suggests a locally melted region within the damage cascade with substantial temperature gradients and rapid energy dissipation, with a quenching rate much larger than MG's critical cooling rate. Thus, the damage cascade regions do not directly develop nanocrystals.

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KW - Finite element analysis

KW - Ion irradiation

KW - Metallic glass

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