Paper Titles
Preface
Mechanical Analysis of Low and High Chromium Steels Used in Hot Strip Work Rolls
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Non-Destructive Criteria of Plastic Deformation and Fracture in Structural Metals
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Microstructure Evolution of Copper by Three Roll Planetary Milling
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Mechanical Analysis of Low and High Chromium Steels Used in Hot Strip Work Rolls

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Abstract:

Microstructure, hardness and fracture toughness of low and high chromium high speed steel used in hot strip mills and subjected to conventional heat treatment have been examined. The influence of tempering temperatures on the mechanical properties of these products, determined using tensile and fracture toughness tests, was studied in this research work. The developed microstructures have been characterized by XRD, optical microscopy and SEM examinations. Macrohardness and microhardness of the specimens have been evaluated by Vickers indentation technique. The fracture toughness of these products was investigated using the rupture weight on 3 points bending specimens. The plane strain fracture toughness KIc and the fracture strength were measured for each alloy. The shell is high harness high speed steels, and the core is nodular cast iron. It was found that most fracture occurred in the eutectic carbides formed by the high content alloy element, such as Mo,V,Cr, but that for the alloys with a reduced volume fraction of eutectic carbides, a small amount of crack propagation occurred in the austenitic dendrites.

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Periodical:

Solid State Phenomena (Volume 279)

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3-9

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.279.3

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Online since:

August 2018

Authors:

Fethi Benkhenafou, Ines Fernández Pariente, F.Javier Belzunce, Abdelkader Ziadi, Ming Quan Shi, Lyes Douadji*

Keywords:

Fracture Toughness, Hardness Toughness, High Chromium Steels, SEM, XRD

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© 2018 Trans Tech Publications Ltd. All Rights Reserved

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