LsDyna - How to use Strain rate and temperature dependant Flow Stress data in tabular form?

Dear friends,

 I am new to this this forum. I salute the founders, administrators and content providers of imechanica for putting up such a useful forum. I work on finite element anaylsis of large deformation and contact problems, in particular metal forming and tribology.

I would be grateful if the forum could suggest the right material model or method for Strain rate and temperature dependant Flow Stress data in tabular form. I am trying to model a high temperature forging process using LsDyna 970 - 6763 for correlation of the stress-strain fields with the microstructure.

Regards

 Utpal