Understanding the influence of composition on mechanical properties of ultra high strength maraging steels
Paper i proceeding, 2008

Investigations of precipitation and its development during ageing at 475°C in four maraging steels with different Mo- and Si-contents have been conducted using high resolution techniques such as 3-dimensional atom probe and energy filtered electron microscopy. The precipitation sequence in the steels proved to be quite complex and involved formation of different phases one on the other. Presence of Mo in the steels contributed to a higher complexity of precipitation process and kept the interparticle distance being small up to 100h of ageing. Occurrence of Si promoted formation of Mo-rich precipitates. The influence of phase separation on the mechanical properties of the steels is discussed.

Intermetallic precipitates

Hardness

3-dimensional atom probe

Energy filtered electron microscopy

Interparticle distance

Maraging steels

Författare

Krystyna Marta Stiller

Chalmers, Teknisk fysik, Mikroskopi och mikroanalys

MARCUS ANDERSSON

Chalmers, Teknisk fysik, Mikroskopi och mikroanalys

New Developments on Metallurgy and Applications of High Strength Steels, Buenos Aires 2008 - Proc. Int. Conf. New Developments on Metallurgy and Applications of High Strength Steels

Vol. 2 Physical Metallurgy and Alloy Design 955-962

Ämneskategorier

Annan teknik