Abstract
Bu çalışmada düşük karbonlu bir çelik sacın kaynak bölgesi özelliklerinin geliştirilmesi, kaynak dikişine uygulanan termomekanik işlem yoluyla denenmiştir. Kaynak işleminin devamında, yüksek sıcaklıklardaki kaynak dikişi haddeleme
işlemine tabi tutularak sıcak plastik deformasyon sağlanmıştır. Deneysel çalışmalar ile numunelerde, mikroyapı, sertlik ve darbe direnci özellikleri incelenmiştir. Bu incelemeler sonucunda; mikroyapıda tane boyutunda küçülme, kaynak metali sertliğinde artış tespit edilmiştir. Darbe direnci, kaynak metalinde azalırken, ısı tesiri altındaki bölgede artmıştır.
Keywords
References
- Cerjak, H. ve Easterling K.E., Mathematical Modelling of Weld Phenomena,
- The Institute of Materials, Londra, 1992.
- Yükler, İ., Kaynak Metali, Marmara Üniversitesi Yayını, İstanbul, 1986.
- Petersen, W.A., “Fine Grained Weld Structures”, Welding Journal, Cilt 52,
- -79, 1973.
- Kou, Y. ve Le, Y., “Grain Structure and Solidification Cracking in Oscillated
- Arc Welds of 5052 Aluminium Alloy”, Metallurgical Transactions A, 16 A,
- -1352, 1985.
- Garland, J.G., “Weld Pool Solidification Control”, Metal Construction and
- British Welding Journal, 121-127, Nisan 1974.
- Tseng, C.F. ve Savage, W.F., “Effect of Arc Oscilation”, Welding Journal,
- Cilt 50, 777-786, 1971.
- Sharir, Y., Pelleg, J. ve Grill, A., “Effect of Arc Vibration and Current Pulses
- on Microstructure and Mechanical Properties of TIG Tantalum Welds”, Metals
- Technology, 190-196, Haziran 1978.
- Tewari, S.P. ve Shanker, A., “Microstructural Changes Associated with
- Vibratory Prepared Weldments”, Journal of Materials Science Letters, Cilt
- , 1335-1336, 1993.
- Pearce, B.P. ve Kerr, H.W., “Grain Refinement in Magnetically Stirred GTA
- Welds of Aluminum Alloys”, Metallurgical Transactions B, Cilt 12 B, 479-
- , 1981.
- Karacif, K., Kaynak Bölgesi Özelliklerinin Termomekanik İşlem İle
- Geliştirilmesi (Modifikasyon), Yüksek Lisans Tezi, G.Ü.F.B.E., Ankara, 1998.
- Askeland, D.R., The Science and Engineering of Materials, Second Edition,
- -
- Heine, R.,W., Loper, C.,R. ve Rosenthal, P.,C., Principles of Metal Casting,
- McGraw-Hill Publishing Company Ltd., New Delhi, 1979.
THE EFFECT OF THERMOMECHANICAL PROCESSING ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF A LOW CARBON STEEL WELD
Abstract
The microstructural refinement of weld zone in a low carbon steel by
thermomechanical processing have been studied. The steel specimens were welded
using MAG (Metal Active Gas) tecnique. With the heat of weld zone hot plastic
deformation was applied on weld metal by rolling. The thermomechanical
processing resulted in a significant grain refinement in both weld metal and heat
affected zone. The hardness of weld metal increased. Impact resistance of specimens
increased in heat affected zone whereas that of weld metal decreased slightly.
References
- Cerjak, H. ve Easterling K.E., Mathematical Modelling of Weld Phenomena,
- The Institute of Materials, Londra, 1992.
- Yükler, İ., Kaynak Metali, Marmara Üniversitesi Yayını, İstanbul, 1986.
- Petersen, W.A., “Fine Grained Weld Structures”, Welding Journal, Cilt 52,
- -79, 1973.
- Kou, Y. ve Le, Y., “Grain Structure and Solidification Cracking in Oscillated
- Arc Welds of 5052 Aluminium Alloy”, Metallurgical Transactions A, 16 A,
- -1352, 1985.
- Garland, J.G., “Weld Pool Solidification Control”, Metal Construction and
- British Welding Journal, 121-127, Nisan 1974.
- Tseng, C.F. ve Savage, W.F., “Effect of Arc Oscilation”, Welding Journal,
- Cilt 50, 777-786, 1971.
- Sharir, Y., Pelleg, J. ve Grill, A., “Effect of Arc Vibration and Current Pulses
- on Microstructure and Mechanical Properties of TIG Tantalum Welds”, Metals
- Technology, 190-196, Haziran 1978.
- Tewari, S.P. ve Shanker, A., “Microstructural Changes Associated with
- Vibratory Prepared Weldments”, Journal of Materials Science Letters, Cilt
- , 1335-1336, 1993.
- Pearce, B.P. ve Kerr, H.W., “Grain Refinement in Magnetically Stirred GTA
- Welds of Aluminum Alloys”, Metallurgical Transactions B, Cilt 12 B, 479-
- , 1981.
- Karacif, K., Kaynak Bölgesi Özelliklerinin Termomekanik İşlem İle
- Geliştirilmesi (Modifikasyon), Yüksek Lisans Tezi, G.Ü.F.B.E., Ankara, 1998.
- Askeland, D.R., The Science and Engineering of Materials, Second Edition,
- -
- Heine, R.,W., Loper, C.,R. ve Rosenthal, P.,C., Principles of Metal Casting,
- McGraw-Hill Publishing Company Ltd., New Delhi, 1979.
Details
| Primary Language | Turkish |
|---|---|
| Subjects | Architecture |
| Journal Section | Makaleler |
| Authors | |
| Publication Date | March 1, 2013 |
| Submission Date | April 21, 2014 |
| Published in Issue | Year 2001 Volume: 16 Issue: 1 |