Study of the thermal effects during microstructural changes of metastable alloys by means of temperature-modulated thermomagnetometry

• Published in: Thermochimica acta Vol. 337; no. 1; pp. 51 - 54
• Main Authors: Kamasa, P., Myśliński, P.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 11.10.1999; Elsevier Science
• Subjects: Amorphous–crystalline transformation; Cross-disciplinary physics: materials science; rheology; Curie temperature; Exact sciences and technology; Materials science; Methods of crystal growth; physics of crystal growth; Physics; Temperature modulation; Theory and models of crystal growth; physics of crystal growth, crystal morphology and orientation; Thermomagnetometry; Thermomagnetometry; Temperature modulation; Amorphous–crystalline transformation; Curie temperature; Binary alloys; Curie point; Phase transformations; Thermomagnetic analysis; Metastable states; Crystallization; Amorphous alloy; Boron Alloys; Kinetic parameter; Experimental study; Nanocrystal; Iron Alloys
• ISSN: 0040-6031; 1872-762X
• DOI: 10.1016/S0040-6031(99)00165-3

Thermomagnetometry (TM) with modulated temperature has been employed to study the dynamics of the nanophase forming from amorphous alloys. A sinusoidal type of modulation in combination with saw-tooth and quasi-isothermal allow for separation reversible and irreversible processes during crystallization in the regions of the Curie temperature of precursor glasses T c(am 1), the remainder of amorphous phase T c(am 2) and bcc nanophase T c(n-Fe). The results are compared with those obtained from standard TM and differential scanning calorimetry of Fe 80B 20 and Fe 86B 14 alloys.