Effect of alloy stoichiometry and boron doping on the H2-induced environmental embrittlement of Ni3Fe intermetallics

X. J. Wan; Y. X. Chen; D. D. Shi; C. T. Liu

doi:10.1016/j.intermet.2008.01.004

Author(s)

X. J. Wan
Y. X. Chen
D. D. Shi
C. T. Liu

Detail(s)

Original language	English
Pages (from-to)	550-553
Journal / Publication	Intermetallics
Volume	16
Issue number	4
Publication status	Published - Apr 2008
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1016/j.intermet.2008.01.004 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-40849123726&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(364f3efe-9b38-4618-99bd-479bdca307dc).html

Abstract

The effect of alloy stoichiometry and boron doping on the H₂-induced environmental embrittlement of Ni₃Fe intermetallic alloys was investigated at room temperature. The results show that the alloy stoichiometry of Ni₃Fe does not affect the sensitivity to hydrogen embrittlement and that the H₂-induced environmental embrittlement is also not related to the surface elemental segregation induced by long time ordering. The results also indicate that the boron doping can effectively suppress the H₂-induced embrittlement of ordered Ni₃Fe intermetallics. The beneficial effect of boron is believed to be due to its strong segregation to grain boundaries and the enhancement of the boundary cohesive strength of Ni₃Fe alloys. © 2008 Elsevier Ltd. All rights reserved.