The Influence Of Non-metallic Inclusions On The Strengthening
Of Steels By Laser Treatment
Author(s)
S. Gubenko & M. Iskov
Abstract
The influence of non-metallic inclusions on the
strengthening of steels by laser treatment
S. ~ubenko"~ & M. lskovl
I Metal Science Department, National Metallurgical Academy of Ukraine
2 st. ~ o h n s College, Oxford, UK
Abstract
Structural changes in steels matrix near different non-metallic inclusions were
investigated. The influence of these changes on the structure and strength of
inclusion-matrix boundaries and also on the mechanism and parameters of the
microcrack formation near non-metallic inclusions is shown.
1 Introduction
Steels contain non-metallic inclusions, which influence on the character of
strengthening during laser quenchmg. In process of treatment non-metallic
inclusions can melt, fully or partly or remain solid. In spite of short-term
treatment, energy of the laser ray turn out sufficient for melting of the highly melt
and light melt inclusions, and also for the development of mass transfer
processes, whch leads to enrichment of steel matrix elements of inclusions and
tr
Keywords
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