Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-11-26T07:23:02.386Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of heat input, heat treatment on microstructure and mechanical properties of GTA welded aerospace material 15CDV6

Published online by Cambridge University Press:  07 March 2017

L. Srinivasan ,
T. Deepan Bharathi Kannan ,
P. Sathiya  and
S. Biju
L. Srinivasan
Affiliation:
Department of Production Engineering, National Institute of Technology, Thiruchirapalli-620015, Tamilnadu, India
T. Deepan Bharathi Kannan
Affiliation:
Department of Production Engineering, National Institute of Technology, Thiruchirapalli-620015, Tamilnadu, India
P. Sathiya*
Affiliation:
Department of Production Engineering, National Institute of Technology, Thiruchirapalli-620015, Tamilnadu, India
S. Biju
Affiliation:
Vikram Sarabhai Space Centre, ISRO, Thiruvananthapuram 695022, Kerala, India
*
a)Address all correspondence to this author. e-mail: [email protected]
Get access

Abstract

In the present study, the effect of heat treatment on microstructure and mechanical properties of gas tungsten arc (GTA) welded 15CDV6 high strength low alloy steel is discussed. Experiments were carried out based on Taguchi L9 orthogonal array to weld 15CDV6 plate of thickness 3.7 mm. The input parameters considered in this work were current, voltage, and welding speed. Tensile strength, microhardness, and impact strength were measured as performance characteristics. Post weld heat treatment was carried out on the weldments to study its effect on the properties of weldments and microstructures were characterized using optical microscope and the X-ray diffraction analysis revealed the presence of MO2C and VC precipitates in the weld. Post weld heat treatment of the GTA welded samples and base metal successfully produced properties required for aerospace applications.

Keywords

15 CDV6TIG weldingmicrostructuretoughness
Type
Articles
Information
Journal of Materials Research , Volume 32 , Issue 7 , 14 April 2017 , pp. 1361 - 1366
Check for updates
Copyright
Copyright © Materials Research Society 2017 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

Contributing Editor: Jürgen Eckert

References

REFERENCES

Bandyopadhyay, T.R., Rao, P.K., and Prabhu, N.: Improvement in mechanical properties of standard 15CDV6 steel by increasing carbon and chromium content and inoculation with titanium during ESR. ISRN Mater. Sci. 2012, 1–7 (2012).Google Scholar
Sapthagiri, S., Jayathiratha Rao, K., Ashok Reddy, K., and Sharada Prabhakar, C.: Comparison of mechanical properties on 15CDV6 steel plates by TIG welding with and without copper coated filler wires. Int. J. Adv. Res. Foundation 2(5), 16–20 (2015).Google Scholar
Neelamegam, C., Vardhan Sapineni, V., Muthukumaran, V., and Tamana, J.: Hybrid intelligent modeling for optimizing welding process parameters for reduced activation ferritic martensitic (RAFM) steel. J. Intell. Learn. Syst. Appl. 5, 39–47 (2013).Google Scholar
Praveen, K. and Ramesh, R.: Effect of welding on pressure vessels (effect of welding heat on material are discussed in terms of manufacturing and NDT). Proceedings of National Conference on Advancement and Recent Innovation in Mechanical Engineering (ARIME), 74–77 (2011).Google Scholar
Naveen Kumar, P., Bhaskar, Y., Mastaniah, P., and Murthy, C.V.S.: Study on dissimilar metals welding of 15CDV6 and SAE 4130 steels by inter pulse gas tungsten arc welding. Procedia Mater. Sci. 5, 2382–2391 (2014).Google Scholar
Indhumathi, S.N., Vasudevan, T., Sundarajan, S., and Subba Rao, B.V.: Cadmium- and chromate free coating schemes for corrosion protection of 15CDV6 steel. Met. Finish. 109, 15–21 (2011).Google Scholar
Ding, C. and Han, W.: Secondary hardening behaviour of 15CrMnMoV thin rolled tube. Acta Metall. 23, 266–275 (2010).Google Scholar
Konkol, P.J.: Effects of long time post weld heat treatment on the properties of constructional steel weldments. Weld. Res. Counc. Bull. 330, 11–26 (1998).Google Scholar
Provost, W.: Effects of stress relief heat treatment on the toughness of pressure vessel quality steels welded with high heat input processes. Int. J. Pressure Vessels Piping 9, 125–154 (1981).Google Scholar
Ravi, S., Balasubramanian, V., and Nemath Nasser, S.: Influence of post weld heat treatment on fatigue life prediction of strength mismatched HSLA steel welds. Int. J. Fatigue 27, 547–553 (2005).CrossRefGoogle Scholar
Kumar, B.V., Ravi, R., and Soni, J.S.: Microstructure and properties of welded 15CDV6 alloy steel. ICFAI J. Sci. Technol. 5, 1–19 (2009).Google Scholar
Cheng, G.X., Kuang, Z.B., Lou, Z.W., and Li, H.: Low cycle hysteresis energy for welded joints with mechanical heterogeneity. Acta Metall. 29(7), A328–A333 (1993).Google Scholar
Cheng, G., Kuang, Z.B., Lou, Z.W., and Li, H.: Experimental investigation of fatigue behavior for welded joint with mechanical heterogeneity. Int. J. Pressure Vessels Piping 67, 229–242 (1996).Google Scholar