Effect of grain orientation on ductility in a nanocrystalline Ni-Fe alloy

Li, Hongqi; Misra, Amit; Liaw, Peter K; Choo, Hahn

doi:10.1063/1.2968662

Title: Effect of grain orientation on ductility in a nanocrystalline Ni-Fe alloy

Journal Article · Tue Jan 01 00:00:00 EST 2008 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2968662· OSTI ID:960464

Li, Hongqi ^[1]; Misra, Amit ^[1]; Liaw, Peter K ^[2]; Choo, Hahn ^[2]

Los Alamos National Laboratory
UNIV OF TENN

The influence of columnar grain geometry on mechanical property was studied in an electrodeposited nanocrystalline Ni-Fe alloy. The compressive results show that the strength is independent of grain orientation. However, the plastic strain increased remarkably when the loading axis is parallel to the direction of grain columns, which is due to the enhanced grain boundary and dislocation activities. The significance of the current study is that a new strategy was developed to improve the ductility of nanocrystalline materials.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC52-06NA25396

OSTI ID:: 960464

Report Number(s):: LA-UR-08-04921; LA-UR-08-4921; APPLAB; TRN: US201006%%1134

Journal Information:: Applied Physics Letters, Vol. 93, Issue 5; ISSN 0003-6951

Country of Publication:: United States

Language:: English

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Title: Effect of grain orientation on ductility in a nanocrystalline Ni-Fe alloy

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