Effects of Surface Finishing on the Mechanical Properties of Induction Welded Iron Based Sintered Compacts*

Uğur Çavdar; Emre Yalamac; İbrahim Gülsahin

doi:10.3139/120.110640

Artikel

Effects of Surface Finishing on the Mechanical Properties of Induction Welded Iron Based Sintered Compacts*

Uğur Çavdar , Emre Yalamac und İbrahim Gülsahin

Veröffentlicht/Copyright: 11. Oktober 2014

Veröffentlicht von

Veröffentlichen auch Sie bei De Gruyter Brill

Manuskript einreichen Informationen für Autor*innen

Aus der Zeitschrift Materials Testing Band 56 Heft 10

Abstract

In this study, iron based sintered parts were welded by high frequency induction welding. The effects of surface roughness on the mechanical properties of induction welded samples were investigated. Polished and unpolished samples were welded and mechanically tested by three point bending test. The hardness of the samples increased from the base material towards the weld metal. The weld metal, heat affected zone and the base material of the samples were investigated by light microscopy. In contrast to the polished samples, corrosion attack was registered in the welded region of unpolished samples. According to the results, the welding duration affects the mechanical properties. However, the surface finishing process was the dominant factor for the bending strength of the welded samples.

Kurzfassung

In der diesem Beitrag zugrunde liegenden Studie wurden die Auswirkungen der Oberflächenrauheit auf die mechanischen Eigenschaften von induktionsgeschweißten Proben untersucht. Es wurden polierte und nicht polierte Proben geschweißt und mechanisch mittels Dreipunktbiegeversuch getestet. Die Härte der Proben nahm vom Grundwerkstoff zum Schweißgut zu. Das Schweißgut, die Wärmeeinflusszone und der Grundwerkstoff wurden mittels Lichtmikroskopie untersucht. Im Gegensatz zu den polierten Proben wurde ein Korrosionsangriff im Bereich der Schweißverbindung der nicht polierten Proben festgestellt. Entsprechend der Ergebnisse, beeinflusst die Schweißdauer die mechanischen Eigenschaften. Davon abgesehen war die Oberflächenbearbeitung der dominierende Faktor bezüglich der Biegefestigkeit der geschweißten Proben.

**Correspondence Address Prof. Dr. Ugur Cavdar, Celal Bayar University, Vocational School, Department of Machinery, Turgutlu Campu, 45400 Manisa, Turkey, E-mail: ugur.cavdar@cbu.edu.tr

Assistant Professor Dr. Uğur Cavdar, born 1981, studied Mechanical Engineering. Since 2011, he is Assistant Professor at Celal Bayar University in Manisa, Turkey. His studies include powder metallurgy, iron based powders, induction sintering, novel and new sintering methods, induction systems, hot forging, heat treatments, welding, induction welding, alumina GNP as well as nano technology. He is a member of the Turkish Powder Metal Association and the European Powder Metal Association (EPMA).

Assistant Prof. Dr. Emre Yalamac received his BSc degree from the Middle East Technical Univeristy in Ankara, Turkey, in 2001 and his MSc degree from Izmir Institute of Technology, Turkey, in 2004, all in Materials Engineering and Joining. In 2010, he recieved his doctoral degree from the Department of Mechanical Engineering, İzmir Institute of Technology, Turkey and from the Department of Science and Engineering of Materials and Processes (SiMAP) at the University of Grenoble, France. In 2011, he became Assistant Professor at Celal Bayar University in Manisa, Turkey. His major research interests include testing, sintering, ceramic synthesis, processing and characterization in general, as well as use of statistical techniques in modeling of ceramic systems. He is a member of the Turkish Ceramic Society.

İbrahim Gülşahin, born 1989, received his BSc degree from Mustafa Kemal University, Hatay, Turkey, in 2011, and is presently a MSc student at Celal Bayar University in Manisa, Turkey. Since 2013, he has been working at Alberk QA Technique, Izmir, Turkey.

Presented during the 3^rd International Conference on Welding Technologies and Exhibition (ICWET'14) in Manisa, Turkey

References

1 W. A.Spitzig, R. E.Semlser, O.Richmond: Evolution of damage and fracture in iron compacts with various initial porosities, Acta Metall.36 (1988), pp. 1201–121110.1016/0001-6160(88)90273-8Suche in Google Scholar

2 R. J.Bourcier, D. A.Koss, R. E.Smelser, O.Richmond: The influence of porosity on the deformation and fracture of alloys, Acta Metall.34 (1986), pp. 2443–245310.1016/0001-6160(86)90147-1Suche in Google Scholar

3 N.Chawla, X.Deng: Microstructure and mechanical behavior of porous sintered steels, Mater. Sci. Eng. A390A (2005), pp. 98–11210.1016/j.msea.2004.08.046Suche in Google Scholar

4 E.Hryha, E.Dudrova, L.Nyborg: Online control of processing atmospheres for proper sintering of oxidation sensitive PM steels, Journal of Materials Processing Technology212 (2012), pp. 977–98710.1016/j.jmatprotec.2011.12.008Suche in Google Scholar

5 F. C.Campbell:Joining: Understanding the Basics, ASM International, Materials Park, Ohio, USA (2011)10.31399/asm.tb.jub.9781627083065Suche in Google Scholar

6 G.Straffelini, V.Fontanari, A.Molinari: Comparison of impact and slow bend behavior of PM ferrous alloys, Mat. Sci. Eng. A248 (1998), pp. 153–16010.1016/S0921-5093(98)00496-1Suche in Google Scholar

7 U.Çavdar, E.Atik: Properties of boronized, carbonitrided and steamed iron-based compacts, Materials Testing56 (2014), No. 2, pp. 126–13010.3139/120.110533Suche in Google Scholar

8 M. W.Wu, L. C.Tsao, G. J.Shu, B. H.Lin: The effects of alloying elements and microstructure on the impact toughness of powder metal steels, Mat. Sci. Eng. A538 (2012), pp. 135–14410.1016/j.msea.2011.12.113Suche in Google Scholar

9 M. I.Khan:Welding Science and Technology, New Age International, New Delhi, India (2008)Suche in Google Scholar

10 M.Çöl, M.Yılmaz: The determination of heat treatment parameters of X52 microalloyed steel after high frequency induction welding, Materials and Design27 (2006), No. 6, pp. 507–51210.1016/j.matdes.2004.11.025Suche in Google Scholar

11 C. Y.Cui, X. G.Cui, X. D.Ren, T. T.Liu, J. D.Hu, Y. M.Wang: Microstructure and microhardness of fiber laser butt welded joint of stainless steel plates, Materials and Design49 (2013), pp. 761–76510.1016/j.matdes.2013.02.059Suche in Google Scholar

12 T.Iamboliev, S.Valkanov, S.Atanasova: Microstructure embrittlement of hard metal steel joint obtained under induction heating diffusion bonding, Int. Journal of Refractory Metals and Hard Materials37 (2013), pp. 90–9710.1016/j.ijrmhm.2012.10.021Suche in Google Scholar

13 U.Çavdar: Mechanical properties of hot forged ANSI 1050 steel, Materials Testing56 (2014), No. 3, pp. 208–21210.3139/120.110555Suche in Google Scholar

14 U.Çavdar, E.Atik: Investigation of Conventional- and Induction-Sintered Iron and Iron-Based Powder Metal CompactsJOM66 (2014), No. 6, pp. 1027–103410.1007/s11837-014-0977-0Suche in Google Scholar

15 Höganäs Iron and Steel Powders for Sintered Components, Höganäs Handbook No. 0, Höganas, Sweden (1998)Suche in Google Scholar

Published Online: 2014-10-11

Published in Print: 2014-10-01

Sie haben derzeit keinen Zugang zu diesem Inhalt.

Artikel in diesem Heft

https://doi.org/10.3139/120.110640