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Interstitial-Free Steels: Structure of Spot Welds

Interstitial-Free Steels: Structure of Spot Welds. Interstitial-free steel Fe-0.002C wt%. Interstitial-free and unalloyed. Extremely fast transformations. Extremely fast cooling rates. Phase diagram similar to pure iron. Difficult to interpret structure. Interstitial-free steel

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Interstitial-Free Steels: Structure of Spot Welds

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  1. Interstitial-Free Steels:Structure of Spot Welds

  2. Interstitial-free steel Fe-0.002C wt% Interstitial-free and unalloyed

  3. Extremely fast transformations Extremely fast cooling rates Phase diagram similar to pure iron Difficult to interpret structure

  4. Interstitial-free steel Fe-0.002C wt%

  5. Bundy (1965)

  6. Completed in a time period much less than a second J. Khan, L. Xu and Y. J. Chao, Science and Technology of Welding and Joining 4 (1999) 201

  7. austenite ferrite cementite

  8. Physical metallurgy of spot welds in interstitial-free steels austenitic stainless ferritic stainless Bhadeshia, Vitek and David, Materials Science and Technology 7 (1991) 50

  9. Bhadeshia, Vitek and David, Materials Science and Technology 7 (1991) 50

  10. Carbon supersaturated plate Carbon diffusion into Carbon diffusion into austenite and carbide austenite precipitation in ferrite Carbide precipitation from austenite LOWER BAINITE UPPER BAINITE (Low Temperature) (High Temperature)

  11. Ohmori and Honeycombe

  12. Widmanstättenferrite

  13. Hayat, Demir, Acarer, Aslanar, Kovove Materialy 47 (2009) 11 Reproduced with permission

  14. Bayraktar, Kaplan, Devillers and Chevalier, J. Mat. Proc. Techn. 189 (2007) 114 Reproduced with permission

  15. Bhadeshia, Metal Science 16 (1982) 159

  16. calculations 800 2 1 3 4 700 5 6 600 500 Temperature / C 1. Fe-0.4C 2. Fe-0.4C-2Si 400 3. Fe-0.4C-1Ni 4. Fe-0.4C-1Mn 5. Fe-0.4C-1Mn-1Cr 300 6. Fe-0.4C-2Mn 200 0 1 2 3 4 5 10 10 10 10 10 10 Time / s

  17. Mukhopadhyay, Bhattacharya and Ray, J. Mat. Proc. Techn. 209 (2009) 1995 Reproduced with permission

  18. Mukhopadhyay, Bhattacharya and Ray, J. Mat. Proc. Techn. 209 (2009) 1995 Reproduced with permission

  19. Mukhopadhyay, Bhattacharya and Ray, J. Mat. Proc. Techn. 209 (2009) 1995 Reproduced with permission

  20. Bhadeshia, Svensson & Gretoft, Acta Metallurgica 33 (1985) 1271

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