Three-body abrasive wear of fine pearlite, nanostructured bainite and martensite

A low-alloy high-carbon martensite steel with 2.6 GPa tensile strength and good ductility

http://digital.csic.es/bitstream/10261/113590/1/226_ACTA_CGM.pdf

Low temperature bainitic ferrite: Evidence of carbon super-saturation and tetragonality

Dry rolling/sliding wear of nanostructured bainite

It is not the first time that a consortium of steel makers, end users and scientists end up with unique approaches and developments in the physical metallurgy of steels. The present paper reveals the scientific and technological developments of a consortium sharing a common intrigue and interest for a unique microstructure, nanostructured bainite. Also known as low temperature bainite, its unique properties rely solely on the scale of the miscrostructure obtained by heat treatment at low temperature (150–350°C). Careful design based on phase transformation theory, some well known metallurgy facts and the necessary industrial experience were the ingredients for a further step towards the industrialisation of these microstructures.

http://digital.csic.es/bitstream/10261/101943/1/221_MST_CGM.pdf

Nanostructured steel industrialisation: plausible reality

The present study is concerned with the potential of high carbon, high silicon steel grades isothermally transformed to bainite at low temperature (<300°C). The first part gives an overview of the design principles, allowing very high strength and ductility to be achieved while minimising transformation duration. Wear and fatigue properties are then investigated for over 10 variants of such materials, manufactured in the laboratory or industrially. The results are discussed against published data. Tensile strengths above 2 GPa are routinely achieved, with, in one case, an exceptional and unprecedented total elongation of over 20%. Bainite plate thickness and retained austenite content are shown to be important factors in controlling the yield strength, though additional, non-negligible parameters remain to be quantified. Rolling–sliding wear performances are found to be exceptional, with as little as 1% of the specific wear rate of conventional 100Cr6 isothermally transformed to bainite. It is sug...

/pdf/evaluation-of-potential-of-high-si-high-c-steel-3h0dl03c8l.pdf

C. Ziegler

Papers

Evaluation of potential of high Si high C steel nanostructured bainite for wear and fatigue applications

Nanostructured steel industrialisation: plausible reality