PRESSURE EFFECT ON THE STABILITY AND PHASE TRANSFORMATION OF THE ε-PHASE IN SPLAT QUENCHING Fe-C-Sb ALLOY | Zendy

QIN ZHI-CHENG | Zendy; Xichen Chen | Zendy; HE SHOU-AN | Zendy; Wenkui Wang | Zendy

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PRESSURE EFFECT ON THE STABILITY AND PHASE TRANSFORMATION OF THE ε-PHASE IN SPLAT QUENCHING Fe-C-Sb ALLOY

Author(s) -

QIN ZHI-CHENG,

Xichen Chen,

HE SHOU-AN,

Wenkui Wang

Publication year - 1985

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.34.1322

Subject(s) - materials science , alloy , metastability , annealing (glass) , orthorhombic crystal system , phase (matter) , graphite , quenching (fluorescence) , analytical chemistry (journal) , crystallography , metallurgy , crystal structure , optics , chemistry , organic chemistry , physics , fluorescence

Pressure effect on the phase transformation process of the ε-phase of splat quenching Pe-C-Sb alloy has been investigated by using X-ray powder photography. The experimental results show that high pressure will not only increase the stability of the ε-phase remarkably but also change its phase transformation process. At 4.7 GPa, as the temperature of stability of ε-phase increases to 450℃, a new metastable phase of orthorhombic structure, being absent at normal pressure, will appear. By raising annealing temperature to 560℃, the orthorhombic metastable phase begins to transform into Fe3C which will decompose into carbon (graphite) and γ-Fe on further increasing annealing temperature to 800℃. At this time, the alloy is composed of C (graphite), γ-Fe, Sb and another unknown phase.

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