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MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Fe-Cr-Mo-[Cu-Ni]-C SINTERED STEELS

E. Dudrova ; M Actis Grande ; M Rosso ; M Kabatova ; Robert Bidulsky ; Eduard Hryha (Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik)
Acta Metallurgica Slovaca - Conference (1338-1660). Vol. 1 (2010), p. 580-585.
[Artikel, refereegranskad vetenskaplig]

The effect of high-temperature vacuum sintering (11800C) integrated with high (6K/s), medium (3K/s) and slow (0.1K/s) cooling rates and conventional sintering at 11800C with cooling rate of ~0.17K/s on shifting the microstructural composition to significant portion of martensite-bainite and thus effective improvement of mechanical properties of Fe-Cr-Mo-[Cu-Ni]-C sintered steels (Astaloy Cr+1 and 2% Cu and/or 50% Distaloy AB powder was investigated. In dependence on chemical composition the yield and tensile strengths of 890-1150 MPa and 913-1230 MPa and impact energy of 10-15 J were achieved by sinter-hardening. The yield and tensile strengths were approximately double than those resulting from conventional sintering.

Nyckelord: sintered steels, sinter-hardening, microstructure, mechanical properties



Denna post skapades 2010-11-17.
CPL Pubid: 129180