Öz
Dual phase steels were developed firstly in 1970's in order to provide of light and strength materials for automobile industries. Since the presence of distributed martensite phase in the matrix of ferrite phase, these type of steels can be provide both high ductility and high strength in a materials together. Obtaining a dual-phase microstructure for many types of steel is possible by the selection of heat treatment parameters properly. In this study, steel bars prepared from AISI 4140 steel were subjected to some thermal treatment followed by isothermal transformation and various dual phase microstructure in similar hardness specimens were obtained. Some mechanical properties such as impact strength, and hardness of these materials were identified, in also wear behavior of these materials which were in similar hardness is investigated. These results are compared with those of AISI 4140 steel. As a result it seen that with dual phase microstructure it can be produced a materials with more toughness and low friction coefficient, but those properties does not affect the weight loss occurring due to wear
Anahtar Kelimeler
Dual phase steel mechanical properties friction behavior wear
Kaynakça
- Krauss, G. and G. Krauss, "Steels: heat treatment and processing principles" Vol. 24. 1990: ASM international Materials Park, OH.
- Tavares, S.S.M., et al., "Mechanical properties of a quenched and tempered dual phase steel" Scripta Materialia, 40(8): p. 887-892, 1999
- Chang, P.H., "Effects of prior tempering on the strain aging of a continuously annealed 0.05% C dual phase steel" Scripta Metallurgica, 17(8): p. 1009-1014, 1983
- Grushko, B. and B.Z. Weiss, "Yield behaviour of dual-phase steel" Scripta Metallurgica, 23(6): p. 865-870, 1989
- Acarer, M. and B. Demir, "An investigation of mechanical and metallurgical properties of explosive welded aluminum–dual phase steel" Materials Letters, 62(25): p. 4158-4160, 2008
- Llewellyn, D. and D. Hillis, "Dual phase steels" Ironmaking & steelmaking, 23(6): p. 471- 478, 1996
- Coldren, A.P. and G. Tither, "Development of a Mn-Si-Cr-Mo as-rolled dual-phase steel" JOM, 30(4): p. 6-9, 1978
- Akbarpour, M.R. and A. Ekrami, "Effect of ferrite volume fraction on work hardening behavior of high bainite dual phase (DP) steels" Materials Science and Engineering: A,. 477(1–2): p. 306-310, 2008
- Kumar, A., S.B. Singh, and K.K. Ray, "Influence of bainite/martensite-content on the tensile properties of low carbon dual-phase steels" Materials Science and Engineering: A, 474(1–2): p. 270-282, 2008
- Liedl, U., S. Traint, and E.A. Werner, "An unexpected feature of the stress–strain diagram of dual-phase steel" Computational Materials Science, 25(1–2): p. 122-128, 2002
- Cai, X.-L., J. Feng, and W.S. Owen, "The dependence of some tensile and fatigue properties of a dual-phase steel on its microstructure" Metallurgical Transactions A, 16(8): p. 1405-1415, 1985
- Farabi, N., D.L. Chen, and Y. Zhou, "Microstructure and mechanical properties of laser welded dissimilar DP600/DP980 dual-phase steel joints" Journal of Alloys and Compounds, 509(3): p. 982-989, 2011
- Nakagawa, A.H. and G. Thomas, "Microstructure-mechanical property relationships of dual- phase steel wire" Metallurgical Transactions A, 16(5): p. 831-840, 1985
- Vargas-Arista, B., et al., "Normalizing effect on fatigue crack propagation at the heat-affected zone of AISI 4140 steel shielded metal arc weldings" Materials Research, 16(4): p. 722-778, 2013
- Saleh, M.H. and R. Priestner, "Retained austenite in dual-phase silicon steels and its effect on mechanical properties" Journal of Materials Processing Technology, 113(1–3): p. 587-593, 2001
- Preciado, M., P.M. Bravo, and J.M. Alegre, "Effect of low temperature tempering prior cryogenic treatment on carburized steels" Journal of Materials Processing Technology, 176(1–3): p. 41-44, 2006
- Colaço, R. and R. Vilar, "On the influence of retained austenite in the abrasive wear behaviour of a laser surface melted tool steel" Wear, 258(1–4): p. 225-231, 2005
AISI 4140 Çeliğinin Çeşitli Çift Fazlı Mikroyapılarında Mekanik Özellikleri İle Sürtünme Davranışı İlişkisinin İncelenmesi
Öz
Çift fazlı çelikler otomotiv sektöründe ihtiyaç duyulan hafif ve dayanıklı malzeme ihtiyacını gidermek amacıyla ilk olarak 1970’li yıllarda geliştirilmişlerdir. Bu tür çelikler ferrit fazı içerisinde dağılmış halde yer alan martenzit fazının varlığı ile yüksek süneklik ve yüksek mukavemeti bir arada sunabilmektedirler. Isıl işlem parametreleri doğru olarak seçildiğinde birçok çelik türü için çift fazlı mikroyapının elde edilmesi mümkündür. Bu çalışmada AISI 4140 çeliğinden hazırlanmış çubuklar kritik sıcaklıklar arası tavlanma işlemini takip eden izotermal dönüşümlere tabi tutularak benzer sertlik değerlerinde çeşitli çift faz mikroyapılarına sahip numuneler elde edilmiştir. Bu numunelerin çekme, darbe dayanımı ve sertlik gibi mekanik özellikleri deneysel olarak belirlenmiş, ayrıca benzer sertlik değerlerine sahip bu yapıların aşınma davranışları incelenmiştir. Bu sonuçlar normalize AISI 4140 çeliğine ait sonuçlar ile karşılaştırılmıştır. Çift fazlı mikroyapı sayesinde benzer sertlik değerleri için daha tok ve sürtünme katsayısı düşük çeliklerin üretilebileceği fakat bunun aşınma nedeniyle oluşan kütle kaybına bir katkısı olmadığı görülmüştür.
Anahtar Kelimeler
Kaynakça
- Krauss, G. and G. Krauss, "Steels: heat treatment and processing principles" Vol. 24. 1990: ASM international Materials Park, OH.
- Tavares, S.S.M., et al., "Mechanical properties of a quenched and tempered dual phase steel" Scripta Materialia, 40(8): p. 887-892, 1999
- Chang, P.H., "Effects of prior tempering on the strain aging of a continuously annealed 0.05% C dual phase steel" Scripta Metallurgica, 17(8): p. 1009-1014, 1983
- Grushko, B. and B.Z. Weiss, "Yield behaviour of dual-phase steel" Scripta Metallurgica, 23(6): p. 865-870, 1989
- Acarer, M. and B. Demir, "An investigation of mechanical and metallurgical properties of explosive welded aluminum–dual phase steel" Materials Letters, 62(25): p. 4158-4160, 2008
- Llewellyn, D. and D. Hillis, "Dual phase steels" Ironmaking & steelmaking, 23(6): p. 471- 478, 1996
- Coldren, A.P. and G. Tither, "Development of a Mn-Si-Cr-Mo as-rolled dual-phase steel" JOM, 30(4): p. 6-9, 1978
- Akbarpour, M.R. and A. Ekrami, "Effect of ferrite volume fraction on work hardening behavior of high bainite dual phase (DP) steels" Materials Science and Engineering: A,. 477(1–2): p. 306-310, 2008
- Kumar, A., S.B. Singh, and K.K. Ray, "Influence of bainite/martensite-content on the tensile properties of low carbon dual-phase steels" Materials Science and Engineering: A, 474(1–2): p. 270-282, 2008
- Liedl, U., S. Traint, and E.A. Werner, "An unexpected feature of the stress–strain diagram of dual-phase steel" Computational Materials Science, 25(1–2): p. 122-128, 2002
- Cai, X.-L., J. Feng, and W.S. Owen, "The dependence of some tensile and fatigue properties of a dual-phase steel on its microstructure" Metallurgical Transactions A, 16(8): p. 1405-1415, 1985
- Farabi, N., D.L. Chen, and Y. Zhou, "Microstructure and mechanical properties of laser welded dissimilar DP600/DP980 dual-phase steel joints" Journal of Alloys and Compounds, 509(3): p. 982-989, 2011
- Nakagawa, A.H. and G. Thomas, "Microstructure-mechanical property relationships of dual- phase steel wire" Metallurgical Transactions A, 16(5): p. 831-840, 1985
- Vargas-Arista, B., et al., "Normalizing effect on fatigue crack propagation at the heat-affected zone of AISI 4140 steel shielded metal arc weldings" Materials Research, 16(4): p. 722-778, 2013
- Saleh, M.H. and R. Priestner, "Retained austenite in dual-phase silicon steels and its effect on mechanical properties" Journal of Materials Processing Technology, 113(1–3): p. 587-593, 2001
- Preciado, M., P.M. Bravo, and J.M. Alegre, "Effect of low temperature tempering prior cryogenic treatment on carburized steels" Journal of Materials Processing Technology, 176(1–3): p. 41-44, 2006
- Colaço, R. and R. Vilar, "On the influence of retained austenite in the abrasive wear behaviour of a laser surface melted tool steel" Wear, 258(1–4): p. 225-231, 2005
Ayrıntılar
| Birincil Dil | Türkçe |
|---|---|
| Bölüm | Malzeme Mühendisliği |
| Yazarlar | |
| Yayımlanma Tarihi | 28 Temmuz 2015 |
| Yayımlandığı Sayı | Yıl 2015 Cilt: 4 Sayı: 1 |
Kaynak Göster
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