Influence of Al on glass forming ability and nanocrystallization behavior of cast-iron based bulk amorphous alloy

Hyo Yun Jung, Mihai Stoica, Seong Hoon Yi, Do Hyang Kim, Jürgen Eckert

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Cast-iron (CI) based bulk amorphous alloy with compositions of Fe75.5-xC6.0Si3.3B5.5P8.7Cu1.0Alx (x = 0, 1 at.%) was synthesized by Cu mold casting. As indicated by increased critical diameters (dmax) for the amorphization, the substitution of Al enhanced the glass-forming ability of the alloy. However, the onset temperature of crystallization (Tx) and the range of supercooled liquid region (ΔTx) of the alloy decreased upon Al addition from 500 °C and 28 °C to 475 °C and 25 °C, respectively. It was revealed that the decreased thermal stability of the amorphous phase is related to the enhanced crystallization tendency to form primary α-Fe phase. Upon the nanocrystallization of primary α-Fe phase the Al-added alloy shows enlarged Ms of 176 emu g-1, still keeping a reasonable small Hc value of 0.086 Oe. The present study revealed that the minor Al addition enhances not only the glass-forming ability, but also the nanocrystallization behavior of the CI based bulk amorphous alloy.

Original languageEnglish
Pages (from-to)818-824
Number of pages7
JournalJournal of Materials Research
Volume30
Issue number6
DOIs
Publication statusPublished - 2015 Nov 17

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Nanocrystallization
Amorphous alloys
Cast iron
casts
Crystallization
iron
Glass
glass
Amorphization
crystallization
Casting
Thermodynamic stability
Substitution reactions
Liquids
Chemical analysis
tendencies
thermal stability
substitutes
Temperature
liquids

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Jung, Hyo Yun ; Stoica, Mihai ; Yi, Seong Hoon ; Kim, Do Hyang ; Eckert, Jürgen. / Influence of Al on glass forming ability and nanocrystallization behavior of cast-iron based bulk amorphous alloy. In: Journal of Materials Research. 2015 ; Vol. 30, No. 6. pp. 818-824.
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Influence of Al on glass forming ability and nanocrystallization behavior of cast-iron based bulk amorphous alloy. / Jung, Hyo Yun; Stoica, Mihai; Yi, Seong Hoon; Kim, Do Hyang; Eckert, Jürgen.

In: Journal of Materials Research, Vol. 30, No. 6, 17.11.2015, p. 818-824.

Research output: Contribution to journalArticle

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AU - Stoica, Mihai

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AU - Eckert, Jürgen

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