Microchemistry studies of ductile L12 Ni-based intermetallics

Naoya Masahashi

Microchemistry studies of ductile L1₂ Ni-based intermetallics

Research output: Contribution to journal › Conference article › peer-review

Abstract

Auger electron microscopy (AES) analysis of boron doped Ni₃Al have shown boron segregation at grain boundary (GB). Boron segregation was enhanced with increasing bulk boron content independent of stoichiometry, suggesting that hypo-stoichiometric alloy is intrinsically ductile even without boron. A slight Ni cosegregation is confirmed using atom probe field ion microscope (APFIM). In Ni₃(Si,Ti), no distinct composition fluctuation was identified between matrix and GB vicinity. These results suggest that atomic bonding atmosphere modification from covalent to metallic in the vicinity of GB is one of factors to modify ductility for L1₂-type intermetallics.

Original language	English
Pages (from-to)	749-754
Number of pages	6
Journal	Materials Research Society Symposium - Proceedings
Volume	364
Issue number	2
Publication status	Published - 1995 Jan 1
Externally published	Yes
Event	Proceedings of the 1994 MRS Fall Meeting - Boston, MA, USA Duration: 1994 Nov 28 → 1994 Nov 30

ASJC Scopus subject areas

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

Cite this

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title = "Microchemistry studies of ductile L12 Ni-based intermetallics",

abstract = "Auger electron microscopy (AES) analysis of boron doped Ni3Al have shown boron segregation at grain boundary (GB). Boron segregation was enhanced with increasing bulk boron content independent of stoichiometry, suggesting that hypo-stoichiometric alloy is intrinsically ductile even without boron. A slight Ni cosegregation is confirmed using atom probe field ion microscope (APFIM). In Ni3(Si,Ti), no distinct composition fluctuation was identified between matrix and GB vicinity. These results suggest that atomic bonding atmosphere modification from covalent to metallic in the vicinity of GB is one of factors to modify ductility for L12-type intermetallics.",

author = "Naoya Masahashi",

year = "1995",

month = jan,

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language = "English",

volume = "364",

pages = "749--754",

journal = "Materials Research Society Symposium - Proceedings",

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publisher = "Materials Research Society",

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note = "Proceedings of the 1994 MRS Fall Meeting ; Conference date: 28-11-1994 Through 30-11-1994",

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T1 - Microchemistry studies of ductile L12 Ni-based intermetallics

AU - Masahashi, Naoya

PY - 1995/1/1

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N2 - Auger electron microscopy (AES) analysis of boron doped Ni3Al have shown boron segregation at grain boundary (GB). Boron segregation was enhanced with increasing bulk boron content independent of stoichiometry, suggesting that hypo-stoichiometric alloy is intrinsically ductile even without boron. A slight Ni cosegregation is confirmed using atom probe field ion microscope (APFIM). In Ni3(Si,Ti), no distinct composition fluctuation was identified between matrix and GB vicinity. These results suggest that atomic bonding atmosphere modification from covalent to metallic in the vicinity of GB is one of factors to modify ductility for L12-type intermetallics.

AB - Auger electron microscopy (AES) analysis of boron doped Ni3Al have shown boron segregation at grain boundary (GB). Boron segregation was enhanced with increasing bulk boron content independent of stoichiometry, suggesting that hypo-stoichiometric alloy is intrinsically ductile even without boron. A slight Ni cosegregation is confirmed using atom probe field ion microscope (APFIM). In Ni3(Si,Ti), no distinct composition fluctuation was identified between matrix and GB vicinity. These results suggest that atomic bonding atmosphere modification from covalent to metallic in the vicinity of GB is one of factors to modify ductility for L12-type intermetallics.

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M3 - Conference article

AN - SCOPUS:0029216942

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JO - Materials Research Society Symposium - Proceedings

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T2 - Proceedings of the 1994 MRS Fall Meeting

Y2 - 28 November 1994 through 30 November 1994

ER -

Microchemistry studies of ductile L1₂ Ni-based intermetallics

Abstract

ASJC Scopus subject areas

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