The effect of boron on the Hall-Petch behavior of Fe-45Al

Journal Article · Mon Apr 15 00:00:00 EDT 1996 · Scripta Materialia

DOI:https://doi.org/10.1016/1359-6462(95)00667-2· OSTI ID:230758

Li, X; Baker, I ^[1]

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1. Dartmouth Coll., Hanover, NH (United States). Thayer School of Engineering

This paper is concerned with the effect of boron on the Hall-Petch slope k for the B2 compound FeAl; k is defined by the relationship {sigma}{sub y} = {sigma}{sub o} + kd{sup {minus}1/2}, where {sigma}{sub y} is the yield strength, d is the grain size and {sigma}{sub o} is the lattice resistance. In recent years, there have been numerous studies of the intriguing effects of boron on the mechanical properties of intermetallic compounds. These effects are more than simple increases in the lattice resistance to dislocation motion, which would be expected of an interstitial element such as boron. The purpose of the present note is to examine further the effect of boron on the Hall-Petch behavior of FeAl by studying the mechanical properties of Fe-45Al doped with 500 ppm boron and comparing the results to previous data on unalloyed Fe-45Al processed in the same manner.

• DOE Contract Number: FG02-87ER45311
• OSTI ID: 230758
• Journal Information: Scripta Materialia, Vol. 34, Issue 8; Other Information: PBD: 15 Apr 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
IRON ALLOYS
COMPRESSION STRENGTH
MICROSTRUCTURE
ALUMINIUM ALLOYS
BORON
METALLURGICAL EFFECTS
INTERMETALLIC COMPOUNDS
SAMPLE PREPARATION
EXTRUSION
RECRYSTALLIZATION
ANNEALING
GRAIN GROWTH
GRAIN SIZE
GRAIN BOUNDARIES
VACANCIES
OPTICAL MICROSCOPY
YIELD STRENGTH
SLIP