EFFECT OF BORON ADDITION ON MICROSTRUCTURE AND PROPERTIES OF SINTEREDFE-1.5MO POWDER MATERIALS

Authors
DUDROVA E SELECKA M BURES R KABATOVA M
Citation
E. Dudrova et al., EFFECT OF BORON ADDITION ON MICROSTRUCTURE AND PROPERTIES OF SINTEREDFE-1.5MO POWDER MATERIALS, ISIJ international, 37(1), 1997, pp. 59-64
Citations number
11
Categorie Soggetti
Metallurgy & Metallurigical Engineering
Journal title
ISIJ international → ACNP
ISSN journal
09151559
Volume
37
Issue
1
Year of publication
1997
Pages
59 - 64
Database
ISI
SICI code
0915-1559(1997)37:1<59:EOBAOM>2.0.ZU;2-H
Abstract
The microstructure formation and mechanical properties of sintered mat erials based on the prealloyed Fe-1.5wt%Mo powder with 0.2-0.6wt% of b oron addition are investigated. An eutectic liquid phase Fe + Fe2B act ivating the sintering of Fe-1.5Mo + B powder systems is formed. Beside s this, an interaction of boron with the Fe-Mo prealloyed matrix occur ed and the formation of fine particles containing molybdenum and boron was registered. Due to this interaction the decrease of eutectic phas e portion and strengthening of the matrix by borides was occurred. The materials Fe-1.5Mo + 0.4wt%B achieved the tensile strength Rm = 487 M Pa, the elongation A(5) = 2.5% and the hardness of 212 HV 30 at the de nsity of 7.15 g.cm(-3) after sintering at 1200 degrees C for 30 min.