Glass forming ability and mechanical properties of misch metal-based bulk metallic glass matrix composite

Ji Hun Kim, Joo Yun Lee, Jin Man Park, Eric Fleury, Won Tae Kim, Do Hyang Kim

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The effect of replacement of lanthanide by misch metal (Mm) in La-Al-TM (TM; transition metal, Ni, Cu and Co) alloys has been investigated to evaluate the possibility of fabrication of in-situ glass matrix composites with enhanced properties. For the as-cast cylindrical Mm55Al25Ni 10Cu10 alloy ingot with 3 mm diameter, the microstructure is consisted of two kinds of a few um size crystalline phases (volume fraction: 4.6%) uniformly distributed in the metallic glass matrix. The substitution of La by Mm reduces the glass forming ability (GFA), i.e., lower the reduced glass transition temperature, Trg (= Tg/TL, where TL is the liquidus temperature) and smaller superliquid temperature region, ΔTx (= Tx - Tg, where, T g is the glass transition temperature and Tx the onset temperatures of crystallization), enabling the fabrication of in-situ BMG matrix composite. The Mm55Al25Ni10Cu10 metallic glass matrix composite sample exhibits the compressive fracture strength of 931 MPa, and in particular enhanced the compressive plastic strain of 1.2% before failure. The enhanced strength and ductility was explained by the presence of fine crystalline phases embedded in the BMG matrix, which led to a multiple shear band formation.

Original languageEnglish
Pages (from-to)1395-1399
Number of pages5
JournalMaterials Transactions
Volume45
Issue number4
DOIs
Publication statusPublished - 2004 Apr 1

Fingerprint

Metallic glass
metallic glasses
mechanical properties
Glass
Mechanical properties
composite materials
glass
Composite materials
matrices
Metals
metals
Crystalline materials
Fabrication
Lanthanoid Series Elements
Shear bands
glass transition temperature
Ingots
Crystallization
Rare earth elements
Temperature

All Science Journal Classification (ASJC) codes

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

Cite this

Kim, Ji Hun ; Lee, Joo Yun ; Park, Jin Man ; Fleury, Eric ; Kim, Won Tae ; Kim, Do Hyang. / Glass forming ability and mechanical properties of misch metal-based bulk metallic glass matrix composite. In: Materials Transactions. 2004 ; Vol. 45, No. 4. pp. 1395-1399.
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Glass forming ability and mechanical properties of misch metal-based bulk metallic glass matrix composite. / Kim, Ji Hun; Lee, Joo Yun; Park, Jin Man; Fleury, Eric; Kim, Won Tae; Kim, Do Hyang.

In: Materials Transactions, Vol. 45, No. 4, 01.04.2004, p. 1395-1399.

Research output: Contribution to journalArticle

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