Microstructure of Powder Metallurgy Carbon Steels by Dr.R.Narayanasamy, Retd Prof (HAG), NITT

1. Microstructure of Powder Metallurgy Parts
Dr.R.Narayanasamy, B.E., M.Tech., M.Engg., Ph.D., (D.Sc.)
Retired Professor,
Department of Production Engineering,
National Institute of Technology,
Tiruchirappalli-620015, Tamil Nadu, India.

5. Powder Metallurgy Parts

7. Microstructure of powder Metallurgy Part

8. Non-sintered microstructural sample with SEM of Cu–Sn–
Zn/ Gr metal matrix composites

9. Microstructure of Fe-2 Mn-0.17 C steel. Compacting at 600 Mpa;
sintering 1120°C for 60 min, cracked ammonia, dew point -30°C. High
carbon ferromanganese.
Pore

10. Powder Metallurgy Part with Pores
Pore
Metallurgical
Grains

11. Optical image for sintered and heat treated bar, in the core region,
prepared using powder mixture A’ using magnification 200×

12. SEM Microstructure of 500g Explosive Compaction in Powder
Metallurgy

13. SEM Microstructure of 750g Explosive Compaction in
Powder Metallurgy

14. SEM microstructure of 1000g of explosive Compaction in
Powder Metallurgy

15. Microstructures of sintered plain carbon PM steel and microalloyed PM steels:
a-Alloy 1; b-Alloy 2; c-Alloy 3; d-Alloy 4

16. Microstructures of sintered plain carbon PM steel and microalloyed PM steels:
a-Alloy 1; b-Alloy 2; c-Alloy 3; d-Alloy 4

17. Microstructures of sintered plain carbon PM steel and microalloyed PM steels:
a-Alloy 1; b-Alloy 2; c-Alloy 3; d-Alloy 4

18. Microstructures of sintered plain carbon PM steel and microalloyed PM steels:
a-Alloy 1; b-Alloy 2; c-Alloy 3; d-Alloy 4

19. Influence of porosity and alloy addition on the wear
behaviour of sinter-forged C45 steel

20. Influence of porosity and alloy addition on the wear
behaviour of sinter-forged C45 steel

21. Influence of porosity and alloy addition on the wear
behaviour of sinter-forged C45 steel

22. Liquid phase sintering mechanism and densification
behavior of boron-alloyed Fe-Ni-Mo-C-B powder metallurgy
steel

23. Manufacturing of MMCs by liquid phase sintering

24. Illustration of the FFF processing steps to produce dense
metal or ceramic parts

25. Manufacturing of MMCs by mechanical alloying

26. Manufacturing of MMCs by melt infiltration

27. Morphology of metal powders depending on their synthesis

28. Morphology of metal powders depending on their synthesis

29. Morphology of metal powders depending on their synthesis

30. Morphology of metal powders depending on their synthesis

31. Benchmarking different metal shaping technologies with respect to batch size and part
complexity (MIM = Metal Injection Moulding, FDM = Fused Deposition Modelling, EB-PDF =
Electron beam – powder bed fusion, LB-PDF = Laser beam powder bed fusion).

32. Benchmarking different metal shaping technologies with respect to batch size and part
complexity (MIM = Metal Injection Moulding, FDM = Fused Deposition Modelling, EB-PDF =
Electron beam – powder bed fusion, LB-PDF = Laser beam powder bed fusion).

33. Thank You
References:
Authors of Technical articles and Scopus Journals are
Acknowledged.