Effect of boron on the fracture behavior and grain boundary chemistry of Ni3Fe

Journal Article · Fri Dec 31 23:00:00 EST 2010 · Scripta Materialia

DOI:https://doi.org/10.1016/j.scriptamat.2010.08.027· OSTI ID:993015

Liu, Y. ^[1]; Liu, Chain T ^[2]; Heatherly, Jr, Lee ^[2]; George, Easo P ^[2]

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1. Central South University, China
2. ORNL

The effect of B on the fracture behavior of Ni{sub 3}Fe alloys (24 and 26 at.% Fe) was studied after cathodic charging with hydrogen. In contrast to its disordered state, ordered Ni{sub 3}Fe underwent brittle intergranular fracture at room temperature. Boron addition changed its fracture mode to predominantly ductile transgranular. The grain boundary chemistry of ordered Ni{sub 3}Fe was analyzed by Auger electron spectroscopy. Boron was found to segregate to the grain boundaries of both Ni-24Fe and Ni-26Fe and reduce the hydrogen-induced embrittlement of these alloys in the ordered state.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 993015
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 2 Vol. 64; ISSN 1359-6462
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
36 MATERIALS SCIENCE
ALLOYS
AUGER ELECTRON SPECTROSCOPY
BORON
BORON ADDITIONS
CHEMISTRY
EMBRITTLEMENT
FRACTURES
GRAIN BOUNDARIES
HYDROGEN
HYDROGEN EMBRITTLEMENT
SEGREGATION