Effect of Fe additions on the embrittlement of Cu--Bi alloys

Journal Article · Thu Jul 01 04:00:00 EDT 1976 · Metall. Trans., A; (United States)

DOI:https://doi.org/10.1007/BF02644059· OSTI ID:7286006

Johnson, W C ^[1]; Joshi, A; Stein, D F

---

1. Ford Motor Co., Dearborn, MI

The effect of iron additions on the embrittlement of Cu--Bi alloys was studied by monitoring the ductility and grain boundary chemistry of embrittled specimens as a function of iron content. Mechanical properties improved for the same embrittling heat treatment as the bulk iron level increased, and this was correlated with a decrease in bismuth segregation to the grain boundaries. No iron was detected segregated to the boundaries, and several possible mechanisms were proposed to explain the beneficial effect of the iron additions. It was also found that approximately 70 min at 530/sup 0/C is required to attain equilibrium for segregation of bismuth to the grain boundaries, and a diffusion coefficient derived from this data was found to be reasonable for bulk diffusion of bismuth in copper.

• OSTI ID: 7286006
• Journal Information: Metall. Trans., A; (United States), Journal Name: Metall. Trans., A; (United States) Vol. 7; ISSN MTTAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
BISMUTH ALLOYS
COPPER ALLOYS
CRYSTAL STRUCTURE
DUCTILITY
EMBRITTLEMENT
GRAIN BOUNDARIES
HIGH TEMPERATURE
IRON ADDITIONS
IRON ALLOYS
MECHANICAL PROPERTIES
MICROSTRUCTURE
TENSILE PROPERTIES