A radiative thermal analysis method for phase-change determination of strictly controlled refractory alloys

Journal Article · Tue Apr 01 00:00:00 EST 1997 · High Temperature and Materials Science

OSTI ID:672430

Antoni-Zdziobek, A; Durand, F ^[1]; Pina, V; Herve, P ^[2]

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1. CNRS et INP Grenoble, Saint Martin d`Heres (France)
2. Univ. Paris X, Ville d`Avray (France). Lab. d`Energetique et d`Economie d`Energie

Radiative measurements using an InSb detector ({lambda} = 5.15 {micro}m) coupled to a photomultiplier ({lambda} = 0.36 {micro}m) were performed during melting and subsequent cooling on samples (pure Fe, Ni, Ti, and Ti-Al alloys and Nb-Ti-Al alloys) in an inductive cold crucible. The UV signal can be used to estimate the temperature, whereas the IR signal is subjected to a significant change related to the phase transformation. It is demonstrated that the transformation temperatures measured by this technique are closer to the thermodynamic values than those determined by the two-color pyrometer.

• OSTI ID: 672430
• Journal Information: High Temperature and Materials Science, Vol. 37, Issue 2; Other Information: PBD: Apr 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
MELTING
COOLING
IRON
NICKEL
TITANIUM
TITANIUM ALLOYS
ALUMINIUM ALLOYS
NIOBIUM ALLOYS
TEMPERATURE MEASUREMENT
THERMAL ANALYSIS
SOLIDIFICATION
TRANSITION TEMPERATURE