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VELOCITY-ASSISTED CORROSION OF API X-52 STEEL IN 3. 5 % NaCl SOLUTION DR. AMARNATH &  PROF.T. K. G. NAMBOODHIRI DEPT. OF METALLURGICAL ENGINEERING, BANARAS HINDU UNIVERSITY
INTRODUCTION ,[object Object],[object Object],[object Object]
EROSION-CORROSION IN AQUEOUS SYSTEMS EROSION- CORROSION VELOCITY-ASSISTED CORROSION IMPINGEMENT ATTACK CAVITATION-DAMAGE
EFFECT OF VELOCITY ON  MASS LOSS
VELOCITY- ASSISTED CORROSION UNDER LAMINAR FLOW
IMPINGEMENT ATTACK-TURBULENT FLOW ,[object Object],[object Object]
CAVITATION DAMAGE ,[object Object],[object Object]
AIM OF THE PAPER ,[object Object],[object Object],[object Object]
Experimental ,[object Object],[object Object],[object Object]
TABLE 1:CHEMICAL COMPOSITION OF  API X-52 STEEL Nominal Composition, Weight % Balance 0. 05 0. 04 0. 026 0. 027 0. 20 1.25 0. 15 Fe V Nb S P Si Mn C
PARALLEL DISK ROTOR
RESULTS ,[object Object],[object Object],[object Object],[object Object]
Table 3  Mechanical properties of API X-52 steel ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
MICROSTRUCTURE OF API X-52 ,[object Object]
MICROSTRUCTURE OF API X-52 ,[object Object],[object Object],[object Object],[object Object],[object Object]
Table 3. Static corrosion of API X-52 steel  3.5% NaCl,  20 days’ exposure ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
VELOCITY-ASSISTED CORROSION ,[object Object],[object Object],[object Object]
VELOCITY ASSISTED CORROSION ,[object Object],[object Object]
EFFECT OF THERMAL AND MECHANICAL TREATMENTS ,[object Object],[object Object],[object Object]
TABLE 4. EFFECT OF THERMOMECHANICAL TREARMENTS ON CORROSION 617 42 Q & T 671 70 50% C. R.  793 48 30 % C. R.  832 47 10 % C. R.  932 85 Hot rolled 5054 28 Annealed Dynamic 1. 36 m/s 20 hrs. Static 24 hrs Corrosion rate, mdd in 3. 5 % NaCl solution Thermo mechanical Treatment
EFFECT OF HARDNESS ,[object Object],[object Object]
CONCLUSIONS ,[object Object],[object Object],[object Object]
LIST OF PUBLICATIONS ,[object Object],[object Object],[object Object],[object Object],[object Object]

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Velocity Assisted Corrosion Of Api X 52 Steel In 3

  • 1. VELOCITY-ASSISTED CORROSION OF API X-52 STEEL IN 3. 5 % NaCl SOLUTION DR. AMARNATH & PROF.T. K. G. NAMBOODHIRI DEPT. OF METALLURGICAL ENGINEERING, BANARAS HINDU UNIVERSITY
  • 2.
  • 3. EROSION-CORROSION IN AQUEOUS SYSTEMS EROSION- CORROSION VELOCITY-ASSISTED CORROSION IMPINGEMENT ATTACK CAVITATION-DAMAGE
  • 4. EFFECT OF VELOCITY ON MASS LOSS
  • 5. VELOCITY- ASSISTED CORROSION UNDER LAMINAR FLOW
  • 6.
  • 7.
  • 8.
  • 9.
  • 10. TABLE 1:CHEMICAL COMPOSITION OF API X-52 STEEL Nominal Composition, Weight % Balance 0. 05 0. 04 0. 026 0. 027 0. 20 1.25 0. 15 Fe V Nb S P Si Mn C
  • 12.
  • 13.
  • 14.
  • 15.
  • 16.
  • 17.
  • 18.
  • 19.
  • 20. TABLE 4. EFFECT OF THERMOMECHANICAL TREARMENTS ON CORROSION 617 42 Q & T 671 70 50% C. R. 793 48 30 % C. R. 832 47 10 % C. R. 932 85 Hot rolled 5054 28 Annealed Dynamic 1. 36 m/s 20 hrs. Static 24 hrs Corrosion rate, mdd in 3. 5 % NaCl solution Thermo mechanical Treatment
  • 21.
  • 22.
  • 23.