Trip steel

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MOHAMMED AJMAL SHERIFF.F
M.TECH- MANUFACTURING ENGINEERING, B.S ABDUR RAHMAN UNIVERSITY, VANDALUR, CHENNAI

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Trip steel

  1. 1. TRIP Steel ansformation Induc Plasticity - Steel Mohammed Ajmal Sheriff.F m.Tech-manufacturing engineering. b.s.abdur rahman university. 30-01-2015 1 TRIP Steel
  2. 2. 30-01-2015 2 INTRODUCTION •TRIP-aided steels are new generation of low-alloy steel •Enhanced combination of strength and ductility. •Triple phase micro structure – Ferrite, bainite and retained austenite. •Greater elongation. •High strain hardening capacity. •Good formability and drawability. Mohammed Ajmal Sheriff.F m.Tech-manufacturing engineering. b.s.abdur rahman university. TRIP Steel
  3. 3. 30-01-2015 3 COMPOSITION OF TRIP STEEL •Hypoeutectoid iron carbon alloys. •0.1 – 0.4 % carbon by weight. •Alloying elements to prevent high carbon cementite phase, which raises the carbon concentration of the austenite phase. •Silicon and Aluminium are two common alloying elements. •Titanium, Niobium, Vanadium, etc., are other alloying elements can be added to improve the strength of the alloy. •Good formability and drawability. Mohammed Ajmal Sheriff.F m.Tech-manufacturing engineering. b.s.abdur rahman university. TRIP Steel
  4. 4. 30-01-2015 4 “TRIP” EFFECT Mohammed Ajmal Sheriff.F m.Tech-manufacturing engineering. b.s.abdur rahman university. TRIP Steel
  5. 5. 30-01-2015 5 PROCESSING METHOD •Intercritical annealing is used to obtain the correct phase distribution. •Temperature above Eutectoid – material is composed of a solid austenite phase and solid ferrite phase. •The material is then isothermally cooled at a temperature of approximately 400 degrees Celsius, in order to allow the austenite to form a banitic ferrite phase. •In a typical steel alloy, the excess carbon would form a high carbon cementite phase. However, the silicon and aluminium prevent the formation of cementite. •The result of the intercritical annealing process is a material composed primarily of ferrite, and bainite. formed from the austenite phase during intercritical annealing, as well as dispersed retained austenite, and martensite phases. Mohammed Ajmal Sheriff.F m.Tech-manufacturing engineering. b.s.abdur rahman university. TRIP Steel
  6. 6. 30-01-2015 6 PROCESSING METHOD Micrograph from SEM Intercritical annealing process On the iron phase diagram Mohammed Ajmal Sheriff.F m.Tech-manufacturing engineering. b.s.abdur rahman university. TRIP Steel
  7. 7. 30-01-2015 7 CHARACTERISTICS OF TRIP STEELS CHEMICAL COMPOSITION Mohammed Ajmal Sheriff.F m.Tech-manufacturing engineering. b.s.abdur rahman university. TRIP Steel
  8. 8. 30-01-2015 8 CHARACTERISTICS OF TRIP STEELS MECHANICAL PROPERTIES Mohammed Ajmal Sheriff.F m.Tech-manufacturing engineering. b.s.abdur rahman university. TRIP Steel
  9. 9. 30-01-2015 9 CHARACTERISTICS OF TRIP STEELS MECHANICAL PROPERTIES Mohammed Ajmal Sheriff.F m.Tech-manufacturing engineering. b.s.abdur rahman university. TRIP Steel
  10. 10. 30-01-2015 10 CHARACTERISTICS OF TRIP STEELS FATIGUE STRENGTH Mohammed Ajmal Sheriff.F m.Tech-manufacturing engineering. b.s.abdur rahman university. TRIP Steel
  11. 11. 30-01-2015 11 CHARACTERISTICS OF TRIP STEELS IMPACT STRENGTH Mohammed Ajmal Sheriff.F m.Tech-manufacturing engineering. b.s.abdur rahman university. TRIP Steel
  12. 12. 30-01-2015 12 CHARACTERISTICS OF TRIP STEELS ELONGATION Vs UTS Mohammed Ajmal Sheriff.F m.Tech-manufacturing engineering. b.s.abdur rahman university. TRIP Steel
  13. 13. 30-01-2015 13 CHARACTERISTICS OF TRIP STEELS FORMABILITY Mohammed Ajmal Sheriff.F m.Tech-manufacturing engineering. b.s.abdur rahman university. TRIP Steel
  14. 14. 30-01-2015 14 CHARACTERISTICS OF TRIP STEELS RESISTANCE SPOT WELDING Mohammed Ajmal Sheriff.F m.Tech-manufacturing engineering. b.s.abdur rahman university. TRIP Steel
  15. 15. 30-01-2015 15 ECONOMICS OF TRIP STEELS •Usually, steel is used for its strength, formability and low cost relative to other metals. •Titanium, magnesium and aluminum offers significant weight savings in automobile components. •Lower abudance, high production cost and high machining cost. •TRIP steels don not face any of these difficulties, because they are low alloy steel. •TRIP steels can be produced for the same price as other high strength steel. Mohammed Ajmal Sheriff.F m.Tech-manufacturing engineering. b.s.abdur rahman university. TRIP Steel
  16. 16. 30-01-2015 16 APPLICATION •As a result of their high energy absorption capacity and fatigue strength, TRIP steels are particularly well suited for automotive structural and safety parts such as Cross members, Longitudinal beams, B- pillar reinforcements, Sills and bumper reinforcements. Mohammed Ajmal Sheriff.F m.Tech-manufacturing engineering. b.s.abdur rahman university. TRIP Steel
  17. 17. 30-01-2015 17 REFERENCES Mohammed Ajmal Sheriff.F m.Tech-manufacturing engineering. b.s.abdur rahman university. 1. http://en.wikipedia.org/wiki/TRIP_steel 2. http://www.arcelormittal.com/automotive/saturnus/sheets/ B_EN.pdf 3. http://www.keytometals.com/page.aspx?ID=CheckArticle&sit e=kts&LN=EN&NM=194 4. http://www.appropedia.org/Transformation_Induced_Plasticit y_%22TRIP%22_Steel 5. http://coursenotes.mcmaster.ca/701.../701_Yankui_Bian_Jan_ 16_08.pdf TRIP Steel
  18. 18. Thank You Mohammed Ajmal Sheriff.F m.Tech-manufacturing engineering. b.s.abdur rahman university. 30-01-2015 18 TRIP Steel

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