Effect of Pearlite Structure on the Mechanical Properties of Microalloyed Hypereutectoid Steels

A.M. Elwazri; Stephen Yue

doi:10.4028/www.scientific.net/MSF.500-501.737

Paper Titles

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Computer Simulation of C-N-V Precipitates Evolution Based on Local Concentration Fluctuations
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Cleavage Initiation in Ti-V-N and V-N Microalloyed Forging Steels
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HomeMaterials Science ForumMaterials Science Forum Vols. 500-501Effect of Pearlite Structure on the Mechanical...

Effect of Pearlite Structure on the Mechanical Properties of Microalloyed Hypereutectoid Steels

Abstract:

The relationship between mechanical properties and pearlite microstructure was investigated using various heat treatments on a hypereutectoid steels containing 1% carbon with different levels of vanadium and silicon. Specimens were heat treated at various temperatures ranging from 900 to 1200°C and transferred to salt bath conditions at 550, 580 and 620°C to examine the structural evolution of pearlite. The results show that the thickness of the cementite network increases with increasing reheat temperature. This is likely due to the larger austenite grain size reducing the grain boundary area available for proeutectoid cementite nucleation. It was found that the vanadium and silicon additions increased the strength of hypereutectoid steels through refinement of the microstructure and precipitation strengthening.

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Materials Science Forum (Volumes 500-501)

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737-744

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https://doi.org/10.4028/www.scientific.net/MSF.500-501.737

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Online since:

November 2005

Authors:

A.M. Elwazri, Stephen Yue

Keywords:

Heat Treatment, Hypereutectoid Steel, Mechanical Property, Silicon, Vanadium

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