Variations in the microstructure and mechanical properties of the oxide layer on high speed steel hot rolling work rolls

Wan Fathul Hakim W. Zamri, P. B. Kosasih, A. K. Tieu, Q. Zhu, H. Zhu

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

This paper is part of a larger study to understand the wear of hot rolling rolls. A significant cost of the hot rolling process is associated with the consumption of rolls, which is why a comprehensive understanding of the wear of the roll material is important. Given that the surface of the rolls is covered by an oxide layer, it is important to know the tribological and mechanical properties of the oxides. Research in this area concentrates mainly on the morphologies and microstructures of the oxide layers. Previously published works give very little, if any, information of the mechanical properties of the layers on high speed steel. This paper presents a methodology to study the mechanical properties of the oxide layer formed on the surface of a high speed steel roll using combined nanoindentation tests and finite element simulations. Mechanical properties such as the elastic modulus (E), hardness (H), yield strength (σ y), and Poisson's ratio (ν), have been determined, and the work has revealed a variation of microstructure, porosity (f), and mechanical properties of the oxide layer across its thickness. The outer sub-layer has a higher E and H than the inner sub-layer. This variation of mechanical properties in the oxide layer was consistent with variations in the porosity and grain sizes in the two sub-layers.

Original languageEnglish
Pages (from-to)2597-2608
Number of pages12
JournalJournal of Materials Processing Technology
Volume212
Issue number12
DOIs
Publication statusPublished - Dec 2012

Fingerprint

Hot Rolling
Hot rolling
Steel
Oxides
Mechanical Properties
Microstructure
High Speed
Mechanical properties
Porosity
Wear of materials
Poisson ratio
Nanoindentation
Yield stress
Poisson's Ratio
Elastic moduli
Hardness
Elastic Modulus
Grain Size
Finite Element Simulation
Costs

Keywords

  • Finite element method
  • High speed steel
  • Hot roll
  • Nanoindentation
  • Oxides

ASJC Scopus subject areas

  • Computer Science Applications
  • Modelling and Simulation
  • Ceramics and Composites
  • Metals and Alloys
  • Industrial and Manufacturing Engineering

Cite this

Variations in the microstructure and mechanical properties of the oxide layer on high speed steel hot rolling work rolls. / W. Zamri, Wan Fathul Hakim; Kosasih, P. B.; Tieu, A. K.; Zhu, Q.; Zhu, H.

In: Journal of Materials Processing Technology, Vol. 212, No. 12, 12.2012, p. 2597-2608.

Research output: Contribution to journalArticle

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