Microstructural evolution during DPRM process of semisolid ledeburitic D2 tool steel

M. N. Mohammed, Mohd. Zaidi Omar, J. Syarif, Zainuddin Sajuri, M. S. Salleh, K. S. Alhawari

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Semisolid metal processing is a relatively new technology that offers several advantages over liquid processing and solid processing because of the unique behaviour and characteristic microstructure of metals in this state. With the aim of finding a minimum process chain for the manufacture of high-quality production at minimal cost for forming, the microstructural evolution of the ledeburitic AISI D2 tool steel in the semisolid state was studied experimentally. The potential of the direct partial remelting (DPRM) process for the production of AISI D2 with a uniform globular microstructure was revealed. The liquid fraction was determined using differential scanning calorimetry. The microstructures of the samples were investigated using an optical microscope and a scanning electron microscope equipped with an energy dispersive spectroscopy analyser, while X-ray phase analysis was performed to identify the phase evolution and the type of carbides. Mechanical characterisation was completed by hardness measurements. The typical microstructure after DPRM consists of metastable austenite which was located particularly in the globular grains (average grain size about 50 m), while the remaining interspaces were filled by precipitated eutectic carbides on the grain boundaries and lamellar network.

Original languageEnglish
Article number828926
JournalThe Scientific World Journal
Volume2013
DOIs
Publication statusPublished - 2013

Fingerprint

Remelting
Tool steel
Steel
Microstructural evolution
microstructure
steel
Metals
Microstructure
Differential Scanning Calorimetry
Hardness
Carbides
Spectrum Analysis
Processing
X-Rays
Electrons
Technology
Costs and Cost Analysis
liquid
metal
calorimetry

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Environmental Science(all)
  • Medicine(all)

Cite this

Microstructural evolution during DPRM process of semisolid ledeburitic D2 tool steel. / Mohammed, M. N.; Omar, Mohd. Zaidi; Syarif, J.; Sajuri, Zainuddin; Salleh, M. S.; Alhawari, K. S.

In: The Scientific World Journal, Vol. 2013, 828926, 2013.

Research output: Contribution to journalArticle

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AU - Salleh, M. S.

AU - Alhawari, K. S.

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