caa a22 4500 46791365X CHVBK 20180406152856.0 cr unu---uuuuu 170328e20060301xx s 000 0 eng 10.1007/s10999-006-9012-0 doi (NATIONALLICENCE)springer-10.1007/s10999-006-9012-0 Some aspects of workability studies on P/M sintered high strength 4% Titanium carbide composite steel preforms during cold upsetting [Elektronische Daten] [R. Narayanasamy, V. Senthilkumar, K. Pandey] Workability is concerned with the extent to which a material can be deformed in a specific metal working process without the initiation of cracks. Ductile fracture is the most common failure in bulk forming process. The formability is a complicated phenomenon which depends on the friction between the preform and the die surface in cold upsetting. A complete experimental investigation on the workability behavior of the steel composite of 4%TiC was performed under different stress states, namely, plane and triaxial stress state conditions. Cold upsetting of the Fe-1.0%C-4%Ti steel composite preforms was carried out applying different lubricants, namely, graphite, zinc stearate and molybdenum disulphide, and without lubricant, and the formability behaviour of the same under plane and triaxial stress state conditions was determined. The curves plotted for different preforms were analysed and relationship was established between the axial strain and the formability stress index under plane and triaxial state conditions. A relationship between the relative density and the axial strain was also established. Various stress ratio parameters, namely, (σθ/σeff), (σm/σeff) and (σz/σeff), under plane and triaxial stress state conditions were determined empirically as a function of the relative density. An attempt is also made to study the variation of slope of the relative density versus stress ratio parameters under plane and triaxial stress conditions with respect to the relative density to identify the pore closure mechanism. Springer Science+Business Media, Inc., 2007 Workability nationallicence Plane stress nationallicence Triaxial stress nationallicence Formability stress index nationallicence Relative density nationallicence Stress ratio parameter nationallicence Narayanasamy R. Department of Production Engineering, National Institute of Technology, 620 015, Tiruchirappalli, Tamil Nadu, India aut Senthilkumar V. Department of Mechanical Engineering, Jayaram College of Engg. & Tech., Tiruchirappalli, Tamil Nadu, India aut Pandey K. Department of Metallurgical Engineering, National Institute of Technology, 620 015, Tiruchirapalli, Tamil Nadu, India aut International Journal of Mechanics and Materials in Design Springer Netherlands 3/1(2006-03-01), 39-57 1569-1713 3:1<39 2006 3 10999 https://doi.org/10.1007/s10999-006-9012-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10999-006-9012-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Narayanasamy R. Department of Production Engineering, National Institute of Technology, 620 015, Tiruchirappalli, Tamil Nadu, India aut NATIONALLICENCE 700 1- Senthilkumar V. Department of Mechanical Engineering, Jayaram College of Engg. & Tech., Tiruchirappalli, Tamil Nadu, India aut NATIONALLICENCE 700 1- Pandey K. Department of Metallurgical Engineering, National Institute of Technology, 620 015, Tiruchirapalli, Tamil Nadu, India aut NATIONALLICENCE 773 0- International Journal of Mechanics and Materials in Design Springer Netherlands 3/1(2006-03-01), 39-57 1569-1713 3:1<39 2006 3 10999 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 458125156 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer