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naca-tn-2896

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National Advisory Committee for Aeronautics, Technical Notes - Survey of Portions of the Iron-Nickel-Molybdenum and Cobalt-Iron-Molybdenum Ternary Systems at 1200°C

The 12000 C isothermal sections of the ironpnickelamolybdenum and
the cobalt-iron—molybdenum ternary systems were surveyed. The phases
occurring in these systems were identified by means of X—ray diffraction
and by etching methods, and the phase boundaries at 12000 C were deter-
mined microscopically, using the disappearing phase method with quenched
specimens. Both systems contain long solid—solution fields of the mu
phase. Other intermediate phases occurring in the iron-nickel-molybdenum
system are the P phase and the delta phase. Both phase diagrams have
extensive face—centered cubic solid-solution fields and some body—
centered cubic solid solutions.

The present report is the last of four prepared for the National
Advisory Committee for Aeronautics to cover research work conducted at
the University of Notre Dame with the sponsorship and financial assist-
ance of the NACA on phase diagrams of ternary and quaternary systems of
interest in connection with high-temperature alloys. Previous reports
of this series dealt with the chromium-cobalt-nickel system (reference 1),
the chromium—cobalt-nickel-iron system (reference 2) and the chromium—
cobalt-nickel-molybdenum system (reference 3). The main purpose of this
work was to provide a survey of the phase relationships in these systems.
In order to be able to complete such a survey within practicable periods
of time, it was decided at the outset to do all work at a single tempera-
ture, with only supplementary data provided, wherever particularly desir-
able, at other temperatures. The temperature 12000 C was chosen for the
isothermal survey work, since it is within the range of technologically
useful annealing temperatures and it is high enough to allow a reasonable
approach_to equilibrium_conditions in most alloys within a period of l or
2 days, thus allowing coverage of a wide composition range by processing
a large number of alloys.

The work cdyered in the present report included two ternary dia-
grams, namely, the iron—cobalt—molybdenum and the fronrnickel-molybdenum.
In view of the object of providing background information for high—
temperature—alloy development, emphasis was placed on the face- centered
cubic- solid solutions. In addition to these, the _boundaries of all
phases'were also investigated which are- directly adjacent to the face-
centered’cubic phase and are capable of coexisting with it.

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naca-tn-2896

  • Version
  • 123 Downloads
  • 1.93 MB File Size
  • 1 File Count
  • January 20, 2017 Create Date
  • January 20, 2017 Last Updated
Scroll for Details

National Advisory Committee for Aeronautics, Technical Notes - Survey of Portions of the Iron-Nickel-Molybdenum and Cobalt-Iron-Molybdenum Ternary Systems at 1200°C

The 12000 C isothermal sections of the ironpnickelamolybdenum and
the cobalt-iron—molybdenum ternary systems were surveyed. The phases
occurring in these systems were identified by means of X—ray diffraction
and by etching methods, and the phase boundaries at 12000 C were deter-
mined microscopically, using the disappearing phase method with quenched
specimens. Both systems contain long solid—solution fields of the mu
phase. Other intermediate phases occurring in the iron-nickel-molybdenum
system are the P phase and the delta phase. Both phase diagrams have
extensive face—centered cubic solid-solution fields and some body—
centered cubic solid solutions.

The present report is the last of four prepared for the National
Advisory Committee for Aeronautics to cover research work conducted at
the University of Notre Dame with the sponsorship and financial assist-
ance of the NACA on phase diagrams of ternary and quaternary systems of
interest in connection with high-temperature alloys. Previous reports
of this series dealt with the chromium-cobalt-nickel system (reference 1),
the chromium—cobalt-nickel-iron system (reference 2) and the chromium—
cobalt-nickel-molybdenum system (reference 3). The main purpose of this
work was to provide a survey of the phase relationships in these systems.
In order to be able to complete such a survey within practicable periods
of time, it was decided at the outset to do all work at a single tempera-
ture, with only supplementary data provided, wherever particularly desir-
able, at other temperatures. The temperature 12000 C was chosen for the
isothermal survey work, since it is within the range of technologically
useful annealing temperatures and it is high enough to allow a reasonable
approach_to equilibrium_conditions in most alloys within a period of l or
2 days, thus allowing coverage of a wide composition range by processing
a large number of alloys.

The work cdyered in the present report included two ternary dia-
grams, namely, the iron—cobalt—molybdenum and the fronrnickel-molybdenum.
In view of the object of providing background information for high—
temperature—alloy development, emphasis was placed on the face- centered
cubic- solid solutions. In addition to these, the _boundaries of all
phases'were also investigated which are- directly adjacent to the face-
centered’cubic phase and are capable of coexisting with it.

FileAction
naca-tn-2896 Survey of Portions of the Iron-Nickel-Molybdenum and Cobalt-Iron-Molybdenum Ternary Systems at 1200°C.pdfDownload 
17,005 Documents in our Technical Library
2449665 Total Downloads

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Newest Additions

NASA-RP-1060 Subsonic Aircraft: Evolution and the Matching of Size to Performance
NASA-RP-1060 Subsonic Aircraft: Evolution and the Matching of Size to Performance
AA-CP-20212-001
AA-CP-20212-001
ADPO10769 Occurrence of Corrosion in Airframes
The purpose of this lecture is to provide an overview ...
MIL-STD-1759 Rivets and Rivet Type Fasteners Preferred for Design
The purpose of this book form standard is to provide ...
MIL-STD-810G Environmental Engineering Considerations and Laboratory Tests
This standard contains materiel acquisition program planning and engineering direction ...