TO INVESTIGATE THE EFFECT OF HEAT TREATMENT ON FRACTURE TOUGHNESS OF WELDED JOINTS

Authors

  • A. Hameed Department of Mechanical Engineering, University of Engineering and Technology, Taxila, Pakistan
  • R. A. Pasha Department of Mechanical Engineering, University of Engineering and Technology, Taxila, Pakistan
  • A. R. Khan Department of Mechanical Engineering, University of Engineering and Technology, Taxila, Pakistan
  • M. Z. Khan Institute of Space Technology (IST), Islamabad, Pakistan
  • M. Shah Department of Mechanical Engineering, University of Engineering and Technology, Taxila, Pakistan

Abstract

Annealing as a post weld heat treatment (PWHT), increases toughness in the welding joints of medium carbon steel in the same way as it increases toughness of the non-welded medium carbon steel. Measurement of increase in toughness through PWHT is focus of the present research work. Welded samples of commercially available steel AISI1035 have been used for the proposed evaluation. The samples welded by two different techniques namely oxyacetylene gas welding and manual metal arc welding, passed through annealing process along with non-welded samples for comparison of increase in toughness. Toughness measured by impact tests revealed the improvement, which in the order of increasing effects is in gas welded, electric welded and non-welded samples. The aim of the present research was to measure the improvement in fracture toughness through post weld heat treatment (annealing). It has been shown that toughness increases as the structural flaws decrease.

References

J.H. Devletian; Failure Analysis of Steel

Welds; Portland State University, D. Van

Dyke, MEI-Charlton, Inc. (2008) 503.

N. Bajic, V. Sijacki-Zeravcic, B. Bobic, D.

Cikara, And M. Arsic, American Welding

Society, Supplement to the Welding Journal

, April (2011) 55.

R. Roberti et el., Forni di Sopra; Effect of

increasing post weld heat treatment

temperature on the fracture toughness of an

ASME SA-542M steel; (UD), Italia, 1-3 marzo

(2012) 137-143.

L. Falat, A. Výrostková, J. KepiÄ, and L.

Čiripová, Chem. Listy 106 (2012) s405.

N. Aucoin, Ductile to Brittle Transition

Behavior of HSLA-65 Steel Welds, Defence

R&D Canada, – Atlantic, Technical

Memorandum, DRDC Atlantic TM2010-220

(January 2011) pp-1-25

ASTM E-23-02a; Standard Test Methods for

Notched Bar Impact Testing of Metallic

Materials; pp-2; American Standard of

Testing Materials; Revised in 2002

J. F.Wallace, A review of welding cast steels

and its effects on fatigue and toughness

properties; Steel founders’ society of

America, 1979; 20611 Centre Ridge Road,

Rocky River, Ohio 44116 (1979) pp-9.

AWS D1.1/1.1M:2010; Structural Welding

Code – Steel; pp-137; American Welding

Society; (Revised 2010).

Sindo Kou, Welding Metallurgy 2nd edition,

Chapter-9, pp 246, New Jersey, Wiley

Interscience – Jhon Wiley and Sons Inc.

(2003) pp-246.

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Published

05-06-2013

How to Cite

Hameed, A., Pasha, R. A., Khan, A. R., Khan, M. Z., & Shah, M. (2013). TO INVESTIGATE THE EFFECT OF HEAT TREATMENT ON FRACTURE TOUGHNESS OF WELDED JOINTS. The Nucleus, 50(2), 165–172. Retrieved from http://www.thenucleuspak.org.pk/index.php/Nucleus/article/view/767

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