Abstract

Yakıt tüketimini düşürmek ve bu şekilde egzoz gazlarının çevreye verdiği zararı en aza indirmek amacıyla otomotiv gövde ağırlığının azaltılması son yıllarda otomotiv sanayindeki en önemli beklentilerden birisidir. Arzu edilen özellikler fırınlama sırasında sertleşen çeliklerle elde edilmiştir. Ancak fırınlama sırasında sertleşme özelliği ön deformasyon miktarı ve fırınlama sıcaklığına bağlı olarak değişmektedir. Bu çalışmada Ti-Nb ile stabilize edilmiş çok düşük karbonlu bir çelik sacın fırınlamayla sertleşme özelliği ön deformasyon miktarı ve fırınlama sıcaklığına bağlı olarak incelenmiştir.

References

[1] Pereloma E, Timokhina I. Bake hardening of automotive steels. In Rana R, Singh SB (Eds.), Automotive Steels: Design, Metallurgy, Processing and Applications, Duxford:Woodhead Publishing, 2017, pp. 259-288.

[2] Takahashi M. Sheet Steel Technology for the Last 100 Years: Progress in Sheet Steels in Hand with the Automotive Industry. ISIJ International 2015;55:1:79-88.

[3] Senuma T. Physical Metallurgy of Modern High Strength Steel Sheets. ISIJInternational 200;41:6:520-532.

[4] Foley RP, Fine ME, Bhat SK. Bake Hardening Steels: TowardImproved Formability and Strength, 39th MWSP Conf Proc ISS 1998;35:653-666.

[5] Matsuoka T, Okamoto A, Sugisawa S, Nakai S. High Strength Cold Rolled Sheet Steels for Automobiles. Metallurgy of Continuous Annealed Sheet Steel, AIME, 1982;969-976.

[6] Bache MR, Evans VJ, Uygur I. Materials Science and Technology 1998;14:1065-1069.

[7] Fekete JR, Strgala DC, Yao Z. Advanced Sheet Steels for Automotive Applications. JOM 1992;17-21.

[8] Mizui N, Okamoto A. Recent development in bake hardenable sheet steels for automotive body panels. Steel in Motor Vehicle Manufacture, Int Conf Sept. 24 - 26, Würtzburg (1990), pp. 85–94. 

[9] Jeong WC. Effect of Prestrain on Aging and Bake Hardening of Cold Rolled, Continuously Annealed Steel Sheets. Metallurgical and MaterialsTransactions A 1998;29A:463-466.

[10] Susumu S, Susumu O, Toshiyuki K, Osaka H, Toshitake H, Hiroshi T. Development of Bake-Hardening High-Strength Cold rolled Sheet Steels for Automobile Exposed Panels. Kawasaki Steel Technical Report 1992;31-38.

[11]    William D, Callister Jr, David GR. Fundamentals of materials science and engineering:  an integrated approach. 4th ed. 2012; Hoboken NJ:Wiley:278.

[12] DE AK, Vandeputte S, Cooman DBC. Static Strain Aging Behavior of Ultra Low Carbon Bake Hardening Steel. Scripta Materialia 1999;41:8:831-837.

[13] Pradhan R. Dent-Resistant Bake Hardening Steels for Automative Outer-Body Applications. SAE Technical Paper Series; 1991; 910290.

[14] Elsen P. Bake –Hardening Effekt bei Feinblechen, Fortschritt-BerichteVDI.

[15] Snick AV, Vanderschueren D, Vandeputte S, Dilewinjns J. Influence of Carbon Contentand Coiling Temperature on Hot and Cold Rolled Properties of Bake Hardenable Nb-ULC Steels, 39th MWSP Conf Proc, ISS 1998; 35:225-232.

[16] Mitsumasa K, Susumu S, Takashi O, Kozo T. Age-Hardening Behavior and Dent Resistance of bake-Hardenable and Extra Deep-Drawable High Strength Steel. Kawasaki Steel Technical Report 1998;18:61-65.

[17] Staarling J, Saimoto S, Boyd JD. Strengthening of Low–Interstitial Steels by Strain-Ageing Treatments. Scripta Materialia 1998;39:4/5:487-492.