Commercial, Advenced Dual-Phase Steel Productions

Öz

In this study, commercial dual-phase steel production methods have been investigated. Manufacturers, in area’s of industries which use materials, would like to use advanced materials having light weight, higher strength, formable and higher strength after forming. This situation also valid for user. Particularly in automotive industry, to decrease vehicle weight is vital target due to provide energy saving and cost reducing. In time of the energy crises, this subject is coming fore very much. From early 1970’s when an energy crisis was also be experiencing, afterward high density working, dual–phase steel which could be instead of HSLA, has been explored and produced from Low Alloy High Strength (HSLA) as a new tape steel. Having better properties from HSLA, dual–phase steel has very much draws attention

Anahtar Kelimeler

• Dual-phase steel, Automotive Sheet Steel, Commercial sheet steel production

Ticari, Geliştirilmiş Çift-Fazlı Çelik Üretimi

Öz

Bu çalışmada ticari çift-fazlı çelik üretim yöntemleri incelenmiştir. Malzeme kullanan bütün endüstriyel alanlarda üreticiler, üstün özelliklere sahip hafif, dayanımı yüksek, şekillendirme kabiliyeti ve şekillendirme sonrası dayanımı iyi olan malzeme kullanmayı arzu ederler. Bu arzu, kullanıcılar açısından da geçerlidir. Özellikle otomotiv endüstrisinde taşıt ağırlığının azaltılması yakıt ve maliyet tasarrufu sağladığı için en büyük hedeflerden biridir. Enerji krizlerinin yaşandığı zamanlarda bu konu daha da ön plana çıkmaktadır. Yine bir enerji krizinin yaşanmaya başladığı yetmişli yıllardan itibaren yoğun araştırmaların neticesinde yüksek mukavemetli düşük alaşımlı (YMDA veya HSLA) çeliklerinin yerine kullanılabilecek bu çeliklerden üretilen çift-fazlı çelikler geliştirilmiştir. Çift-fazlı çeliklerin klasik HSLA çeliklerinden oldukça üstün özellikleri sahip olmaları, oldukça ilgi çekmelerine sebep olmaktadır.

Anahtar Kelimeler

• Çift-fazlı çelikler, Ticari Otomotiv Sac Çelikleri, Dual-phase steel, Ticari Çelik Sac Üretimi

Kaynakça

1. B Demir, Phd thesis, Gazi University
2. Hayami S. and Furukawa T., “A Family of High Strength , Cold Rolled Steels”, in Microalloying 75, Session 2A, Vanitec, pp: 78-87, London, (1975)
3. Avtar R., Jha B.K., Sexane A., Dwivedi V.S., Patnaik B.B., Banerjee B. and Srinivasan S., ‘’An as Hot Rolled Approach to Production of Molypdenum and Chromium Microalloyed Dual Phase Steels’’, Transactions, ISIJ, V: 26, pp: 822-828, (1986)
4. Grange R.A., ‘’Fibrous Microstructures Developed in Steel by Thermochemical Processing’’, Procedings 2nd. (Int. Conf. on Stregth of Metals and Alloys), ASM, pp: 861-876, Cleveland,(1970)
5. Hayami S. and Furukawa T., ‘’A Family of High Strength Cold Rolled Steels’’ Proceedings of Micro-Alloying (Internatinal Symposium on HSLA)., pp: 311-320, Washington D.C, (1975)
6. Rashid M.S., ‘’Gm 980x-A Unique High Strength Sheet Steel with Superior Formability”, SAE, Preprint 760206, (1976)
7. Rashid M.S., “Relationship Between Steel Microstructure and Formability”, Formable HSLA and Dual-Phase Steels, Ed. By. Davenport A.T., AIME, pp:1-29, Newyork, (1977)
8. Davies R.G. and Magee C.L., “Physcal Metallurgy of Automotive High Strength Steels”, Structure and Properties of Dual-Phase Steels, Ed. By. R.A. Kot and J.W. Morris AIME,, pp: 1-19, Newyork, (1979)

9. Coldren A.P., and Eldis.T., ‘’Using CCT Diagrams to Optimize the Composition of an as-Rolled Dual Phase Steels’’, Jornal of Metals, v: 4, no:4, pp:41-48, March, (1980)
10. Pradhan R., ‘’Continous Annealing of The Steel’’, ASM Handbook, fifth printing, pp: 56-66, (1997)
11. Coldren A.P., and Corford A., ‘’Devalopment and Mill Trial of as-Rolled Dual Phase Steel’’, v: 4, no: 9, pp: 205-228, mer 3, (1997)
12. Crosbi G.A. and Baker A.J., ‘’Controlled Rolling Simulation in Microalloyed Steels’’, v: 4, no: 8, pp: 433-455, mer 4
13. Nabil A. and Chin C., ’’Deformation Cracteristics of Dual Phase Steel’’, Materials and Processing For The Factory of The Future’’, ASM Pekia Chapter, March, (1989)
14. Anelli A. and Masconzoni A., ‘’Towards an as-Rolled Dual Phase Steel’’, Proc. Conf. V:4, no: 1, pp: 47-57, Liverpool, (1981)
15. Repas P.E., “Physical Metallurgy of Dual Phase Steels”, Working and Steel Processing Conf. XVII, AIME, pp: 277-305, Newyork, (1979)
16. Crawley A. F., Shehata M.T. and Ruddle G.E., ’’Microstructures, Properties and Roolling Mill Requirements For Some As-Hot-Rolled Dual Phase Steels’’, Canadian Metallurgical Guarterly, vol.22, No: 4, pp: 485-494, Canada, (1983)
17. Park S.H., Ro K.S. and Kwon O., ‘’Microstructures and Mechanical Properties of Hot Rolled Dual Phase Steels For Automobile Wheels’’, Int. Symp. on Low Carbon Steels for the 90’s, Ed. by Asfahani and Tither, The Minerals, Metals &Materials Soc., pp: 355-364, (1993)
18. S.J. Kim, C.G. Lee, T.H. Lee and S. Lee, ”Effects of coiling temperature on microstructure and mechanical properties of high-strength hot-rolled steel plates containing Cu, Cr and Ni”, ISIJ, vol: 40, pp: 692-698, (2000)
19. Thomas G., ‘’Improved Properties of HSLA and Dual Phase Steels by Conrolled Rolling and Direct Quencing’’, Phisical Prop. of Direct-Quenched Steels Ed. by. Taylor K.A., Thompson S.W. and Fletcher F.B., The Minerals, Metals &Materials Soc, pp: 265-277, (1993)
20. Furukawa T., Tanino M., Morikowa H. and Endo M., ‘’Effects of Composation and Processing Factors on The Mechanical Properties of As-Hot-Rolled Dual-Phase Steels’’, V:4, No:2, Transactions ISIJ, vol: 24, pp: 113-121, (1984)
21. Speich G.R.,’’Dual Phase Steels’’, Heat Treating, ASM Handbook, fifth prinnting, pp: 424-429, (1997)
22. Hansen S.S. and Bramfitt B.L., ‘’Hot Strip Mill Processing of Dual-Phase Steels’’, int. Conf. on Steel Rolling, Sci. and Tech. of flat Roolled Poducts, ISIJ, vol: 4, no: 7, pp: 1297-1308, Tokyo (1980)
23. Goel N.C., Ram Avtar, Rai G. and Ramaswamy V., ‘’Effect of Variables on The Evolution of Dual Phase Microstructures in a Plain C-Mn-Si Steel’’, Steel India, vol: 6, no:2, October, (1983)
24. Chengji L.I., Watt D.F., Purdy G.R. and Crawley A.F., ‘’Influence of Processing Route and Chemistry on Structure and Properties of Fe-C-Mn Dual Phase Steels’’, pp: 5.153-5.163, (1981)
25. Pradhan R. and Melcher E.D., ‘’Cracteristic of High Strength Cold Rolled Sheet Steels Produced by Continous Annealing’’, International Congress and Exposition, Feb.27/Marc2, (1984)
26. Pradhan R., ‘’Metallurgical Aspect of Quenched and Tempered Dual Phase Steels Produced via Continous Annealing’’, Journal of Metals, vol: 36, pp: 291-317, (1984)
27. Matsudo K. Osuma K. and Kurikava K.,’’Metallurgical Aspects of The Development Continous Annealing Technology At Nippin Kokan’’, pp: 3-36,
28. ’’Bake Hardening Cold Rold Steel Sheet Having Dual Phase Structure and Prosee for Manufacturing it’’, U.S.A. Patent, Patent No: 5123969, Jun/ 23, (1992)
29. Matsudo K., ‘’The Nkk-CAL Process, a Continous Annealing Process for Cold Rolled Strip’’
30. Kishida A., Ohta N., Takasaki J. and Obara T., ‘’Development and Operation of The World’s first Multipurpose Continous Annealing Line’’, seaisi Quarterly July pp: 54-66, (1982)
31. Chen H.C., and Cheng G.H.,”Effect of Martensite Strength on The Tensile-Strength of Dual Phase Steels”, Jour. of Materıals Science, vol: 24 pp:1991-1994, (1989)
32. “Cold Rolled Dual Phase Structure Steel, Sheet Having and a Method of Manufacturing The Same’’ Usa Patent, no: 4615749, Oct/7, (1986)
33. Gupta I. and Chang P.H., ‘’Effect of Composional and Processing Parameters on The Variability of Tensile Strength of Continously Annealed Water Quenched Dual Phase Steels’’, Journal of Metals, vol: 36, pp: 263- 267, (1984)
34. Matsuoka T., Takashi M., Nozaki N. and Okada Y.,’’Development of Quenched and Tempered 760Mpa Grade Sheet Steels With Superior Formability ‘’, Formable HSLA and Dual-Phase Steels, Ed. By. Davenport A.T., AIME ,pp: 229-244, (1977)
35. Bag A., Sharma A. and Rajan T.V., ‘’Recent Advances in Technology of High Strength Dual Phase Steels’’, Tool Alloy Steels, pp: 315-319