Publications de Amuthan Ramar | EPFL Graph Search

Impact of He and Cr on defect accumulation in ion-irradiated ultrahigh-purity Fe(Cr) alloys

Robin Schäublin, Amuthan Ramar, Anna Prokhodtseva

The effect of He on the primary damage induced by irradiation in ultrahigh-purity (UHP) Fe and Fe(Cr) alloys was investigated by transmission electron microscopy (TEM). Materials were irradiated at room temperature in situ by TEM in a microscope coupled to ...

Pergamon-Elsevier Science Ltd2013

Analysis of hardening limits of oxide dispersion strengthened steel

Amuthan Ramar

Oxide dispersion strengthened (ODS) ferritic/martensitic (F/M) steels are promising materials for high temperature applications. The hardening limits from room temperature to 1000 degrees C of one of such steel, ODS EUROFER97, together with the impact of t ...

Elsevier Science Bv2013

On the lattice coherency of oxide particles dispersed in EUROFER97

Nadine Baluc, Robin Schäublin, Amuthan Ramar

Oxide dispersion strengthened steels based on the ferritic/martensitic steel EUROFER97 are developed. The reinforcing particles dispersed in the matrix of EUROFER97 are made of yttria and yttrium titanium oxides. Microstructure is investigated by transmiss ...

Elsevier2009

On the relationship between the microstructure and the mechanical properties of an ODS ferritic/martensitic steel

Amuthan Ramar

In the quest of materials for the first wall of the future fusion reactor, it has been shown that oxide dispersion strengthened (ODS) ferritic / martensitic (F/M) steels appear to be promising candidates. The inherent good mechanical properties supported b ...

EPFL2008

Focused ion beam application on the investigation of tungsten-based materials for fusion application

Nadine Baluc, Robin Schäublin, Amuthan Ramar, Zbigniew Oksiuta, Lyubomira Veleva

Springer Verlag2008

Analysis of high temperature deformation mechanism in ODS EUROFER97 alloy

Philippe Spätig, Robin Schäublin, Amuthan Ramar

2008

Analysis of basic mechanisms of hardening in ODS EUROFER97 steel using in-situ TEM

Robin Schäublin, Amuthan Ramar

Springer Verlag2008

Effect of irradiation on the microstructure and the mechanical properties of oxide dispersion strengthened low activation ferritic/martensitic steel

Nadine Baluc, Amuthan Ramar

Ferritic/martensitic (F/M) steels show good resistance to swelling and low damage accumulation upon irradiation relative to stainless steels. 0.3 wt% yttria particles were added to the F/M steel EUROFER 97 to produce oxide dispersion strengthened (ODS) ste ...

2007

effect of irradiation on the microstructure and the mechanical properties of oxide dispersion strenghtened EUROFER 97 steel

Nadine Baluc, Robin Schäublin, Amuthan Ramar

2006

Microstructural development under irradiation in European ODS ferritic/martensitic steels

Nadine Baluc, Robin Schäublin, Amuthan Ramar

Oxide dispersion strengthened steels based on the ferritic/martensitic steel EUROFER97 are promising candidates for a fusion reactor because of their improved high temperature mechanical properties and their potential higher radiation resistance relative t ...

2006

Ti influence on the microstructure and the mechanical behaviour of an EDS ferritic/martensitic EUROFER 97 steel

Nadine Baluc, Robin Schäublin, Amuthan Ramar

2005