Densification behaviour of sintered aluminum composites during hot deformation

In this study, an investigation on the densification behavior and forming limit of powder metallurgy composites containing hard carbide particles were carried out. The selected composite materials are Al4TiC, Al4WC, Al4Fe3C and Al4Mo2C. The compacts of 0.82 and 0.86 relative density and 0.4 and 0.6 aspect ratio were prepared on a 1-MN capacity hydraulic press using suitable die-set assembly. Sintering was carried out at 594 ℃ for 60 minutes in an electrical muffle furnace. Hot upsetting was carried out at the sintering temperature immediately after the sintering process and the forming process was stopped once visible cracks were seen on the free surface. Flat dies on the upper and lower surface were employed under dry friction conditions during hot upsetting. Finally, the densification behavior and forming limit of sintered-forged aluminium composite preforms is presented in this research work. It was concretely noted that Al4TiC produced the best density amongst all the above mentioned aluminium composites. Further, it was seen that Al4Mo2C and Al4WC produced good final height and diameter strain at fracture.

[1]  Sumesh Narayan,et al.  Studies on formability of sintered aluminum composites during hot deformation using strain hardening parameters , 2017 .

[2]  Sumesh Narayan,et al.  Workability studies of sintered aluminium composites during hot deformation , 2016 .

[3]  Rajeshkannan Ananthanarayanan,et al.  Densification behaviour of sintered-forged aluminium composite preforms , 2014 .

[4]  R.D.Pruthviraj.  A review on recent applications and future prospectus of hybrid composites in various engineering applications , 2014 .

[5]  N. Selvakumar,et al.  Experimental investigation on workability and strain hardening behaviour of Fe–C–Mn sintered composites with different percentage of carbon and manganese content , 2013 .

[6]  R. Othman,et al.  Mechanical alloying and sintering of nanostructured tungsten carbide-reinforced copper composite and its characterization , 2011 .

[7]  Sumesh Narayan,et al.  Densification behaviour in forming of sintered iron-0.35% carbon powder metallurgy preform during cold upsetting , 2011 .

[8]  N. Murugan,et al.  Prediction of tensile strength of friction stir welded aluminium matrix TiCp particulate reinforced composite , 2011 .

[9]  S. Asavavisithchai.  Effect of TiC Particles on Foamability and Compressive Properties of Aluminium Foams , 2010 .

[10]  Sumesh Narayan,et al.  Strain hardening behaviour in sintered Fe—0.8%C—1.0%Si—0.8%Cu powder metallurgy preform during cold upsetting , 2009 .

[11]  M. Rahimian,et al.  The effect of particle size, sintering temperature and sintering time on the properties of Al–Al2O3 composites, made by powder metallurgy , 2009 .

[12]  H. Danninger,et al.  RELATIONSHIP BETWEEN APPARENT HARDNESS AND TENSILE STRENGTH IN PM IRON AND STEELS SINTERED AT STANDARD TEMPERATURES , 2009 .

[13]  V. Senthilkumar,et al.  Influence of titanium carbide particles addition on the forging behaviour of powder metallurgy composite steels , 2008 .

[14]  N. Ashgriz,et al.  Preparation of aluminum/silicon carbide metal matrix composites using centrifugal atomization , 2008 .

[15]  H. Al-Qureshi,et al.  Analyses of the fundamental parameters of cold die compaction of powder metallurgy , 2008 .

[16]  V. Senthilkumar,et al.  Effect of titanium carbide particle addition on the densification behavior of sintered P/M high strength steel preforms during cold upset forming , 2007 .

[17]  L. Hua,et al.  Plastic deformation and yield criterion for compressible sintered powder materials , 2006 .

[18]  H. A. Al-Qureshi,et al.  On the mechanics of cold die compaction for powder metallurgy , 2005 .

[19]  M. Kok,et al.  Production and mechanical properties of Al2O3 particle-reinforced 2024 aluminium alloy composites , 2005 .

[20]  R. Narayanasamy,et al.  Some aspects on workability of aluminium–iron powder metallurgy composite during cold upsetting , 2005 .

[21]  Y. Şahin.  Preparation and some properties of SiC particle reinforced aluminium alloy composites , 2003 .

[22]  Geoffrey Davies,et al.  Design and material utilization , 2003 .

[23]  W. Xia,et al.  Densification model for porous metallic powder materials , 2002 .

[24]  M. Lieblich,et al.  Mechanical properties of some PM aluminide and silicide reinforced 2124 aluminium matrix composites , 2002 .

[25]  Roland W. Lewis,et al.  A plasticity model for metal powder forming processes , 2001 .

[26]  X. Q. Zhang,et al.  Study of workability limits of porous materials under different upsetting conditions by compressible rigid plastic finite element method , 2000 .

[27]  M. Abdel-rahman,et al.  Workability in forging of powder metallurgy compacts , 1995 .

[28]  B. Weiss,et al.  Microstructure and mechanical properties of sintered iron. II: Experimental study , 1993 .