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The Effect of Repair Welding Number on Microstructure of Hastelloy X Fabricated via TIG Process

Received: 22 November 2015     Accepted: 5 December 2015     Published: 21 March 2016
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Abstract

The effect of repair welding number on microstructure of the hastelloy X fabricated via TIG process was investigated. The SEM, EDS and OM were used to determine mechanical properties and the microstructure of HAZ zone, respectively. Results showed that the grain size of base metal determined by OM and SEM was 64.11 μm with M6C and M23C6 carbides (6.16, 18.71 μm respectively). Also, using welding for three times caused increase of grain size (15%, 22%, 26% respectively) and the heat input made some carbides dissolve. The grain growth through HAZ zone venially affected the strength of alloy. The results of tensile test demonstrated that UTS increased by repair welding, 1%, 2% and 3% respectively. As the UTS of base metal was 727 MPa, the fracture phenomenon occurred. Furthermore, repair welding of mentioned alloy did not exceed more than three times.

Published in International Journal of Materials Science and Applications (Volume 5, Issue 2)
DOI 10.11648/j.ijmsa.20160502.12
Page(s) 43-48
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2016. Published by Science Publishing Group

Keywords

GTAW, Hastelloy X, Microstructure, Carbides

References
[1] Fude Wang, Mechanical property study on rapid additive layer manufacture Hastelloy X alloy by selective laser melting technology, The International Journal of Advanced Manufacturing Technology, 5-8, 2012, 545-551.
[2] Jeremie Graneix, Jean Denis Beguin, Joël Alexis, Talal Masri, “Weldability of Superalloys Hastelloy X by Yb: YAG Laser", Advanced Materials Research, Vol 1099, pp. 61-70, Apr. 2015”.
[3] J. C. Lippold, J. W. Sowards, G. M. Murray, B. T. Alexandrov, A. J. Ramirez, “Weld Solidification Cracking in Solid-Solution Strengthened Ni-Base Filler Metals”, 2008, pp. 147-170.
[4] J. Matthew, S. Donachie, J. Donachie, “Superalloys, A Technical Guide”, 2nd ed., ASM International, USA, New York, 2002, pp. 192-265.
[5] N. S. Stoloff, “Speciality Steels and Heat- Resistant Alloy”, Metals Handbook, 1ST ed., Vol. 1, ASM Handbook, 2005, pp. 1478-1549.
[6] N. L. Richards and M. C. Chaturvedi, "Effect of minor elements on weldability of Nickle base superalloys", international Materials Reviews, Vol. 45, 2000.
[7] Q. Wang, D. L. Sun, Y. Na, Y. Zhou, X. L. Han, J. Wang, "Effects of TIG Welding Parameters on Morphology and Mechanical Properties of Welded Joint of Ni-base Superalloy", Procedia engineering, 11th International Conference on the Mechanical Behavior of Materials (ICM11), 2011, 37-41.
[8] Li. Zhang, S. L. Gobbi, K. H. Richter, “Autogenous Welding of Hastelloy X to Mar-M 247 by Laser”, J MaterPro Tech, 70, 1997, pp. 285-292.
[9] M. Pang, G. Yu, H. H. Wang, C. Y. Zheng, “Microstructure Study of Laser Welding Cast Nickel-Based Super Alloy K418”, Journal of Materials Processing Technology, 207, 2008, pp. 271–275.
[10] R. Sihotang; P. Sung-Sang; B. Eung-Ryul, Effects of heat input on microstructure of tungsten inert gas welding used hastelloy X, Volume 18, Issue S2 (May 2014), pp. S2-1074-S2-1080.
[11] W. G. Kim, S. N. Yin, W. S. Ryu, J. H. Chang, S. J. Kim, "Tension and creep design stresses of the Hastelloy X alloy for high temperature gas cooled reactors", Materials science and engineering, 2008, p 495-497.
[12] G. D. Janaki Ram, A. Venugopal Reddy, K. Prasad Rao, G. M. Reddy, J. K. Sarin Sundar, “Microstructure and Tensile Properties of Inconel 718 Pulsed Nd-YAG Laser Welds”, Journal of Materials Processing Technology, 167, 2005, pp. 73–82.
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  • APA Style

    Mohammad Reza Abedi, Hamed Sabet, Hossein Razavi. (2016). The Effect of Repair Welding Number on Microstructure of Hastelloy X Fabricated via TIG Process. International Journal of Materials Science and Applications, 5(2), 43-48. https://doi.org/10.11648/j.ijmsa.20160502.12

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    ACS Style

    Mohammad Reza Abedi; Hamed Sabet; Hossein Razavi. The Effect of Repair Welding Number on Microstructure of Hastelloy X Fabricated via TIG Process. Int. J. Mater. Sci. Appl. 2016, 5(2), 43-48. doi: 10.11648/j.ijmsa.20160502.12

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    AMA Style

    Mohammad Reza Abedi, Hamed Sabet, Hossein Razavi. The Effect of Repair Welding Number on Microstructure of Hastelloy X Fabricated via TIG Process. Int J Mater Sci Appl. 2016;5(2):43-48. doi: 10.11648/j.ijmsa.20160502.12

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  • @article{10.11648/j.ijmsa.20160502.12,
      author = {Mohammad Reza Abedi and Hamed Sabet and Hossein Razavi},
      title = {The Effect of Repair Welding Number on Microstructure of Hastelloy X Fabricated via TIG Process},
      journal = {International Journal of Materials Science and Applications},
      volume = {5},
      number = {2},
      pages = {43-48},
      doi = {10.11648/j.ijmsa.20160502.12},
      url = {https://doi.org/10.11648/j.ijmsa.20160502.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.20160502.12},
      abstract = {The effect of repair welding number on microstructure of the hastelloy X fabricated via TIG process was investigated. The SEM, EDS and OM were used to determine mechanical properties and the microstructure of HAZ zone, respectively. Results showed that the grain size of base metal determined by OM and SEM was 64.11 μm with M6C and M23C6 carbides (6.16, 18.71 μm respectively). Also, using welding for three times caused increase of grain size (15%, 22%, 26% respectively) and the heat input made some carbides dissolve. The grain growth through HAZ zone venially affected the strength of alloy. The results of tensile test demonstrated that UTS increased by repair welding, 1%, 2% and 3% respectively. As the UTS of base metal was 727 MPa, the fracture phenomenon occurred. Furthermore, repair welding of mentioned alloy did not exceed more than three times.},
     year = {2016}
    }
    

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    T1  - The Effect of Repair Welding Number on Microstructure of Hastelloy X Fabricated via TIG Process
    AU  - Mohammad Reza Abedi
    AU  - Hamed Sabet
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    DO  - 10.11648/j.ijmsa.20160502.12
    T2  - International Journal of Materials Science and Applications
    JF  - International Journal of Materials Science and Applications
    JO  - International Journal of Materials Science and Applications
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    PB  - Science Publishing Group
    SN  - 2327-2643
    UR  - https://doi.org/10.11648/j.ijmsa.20160502.12
    AB  - The effect of repair welding number on microstructure of the hastelloy X fabricated via TIG process was investigated. The SEM, EDS and OM were used to determine mechanical properties and the microstructure of HAZ zone, respectively. Results showed that the grain size of base metal determined by OM and SEM was 64.11 μm with M6C and M23C6 carbides (6.16, 18.71 μm respectively). Also, using welding for three times caused increase of grain size (15%, 22%, 26% respectively) and the heat input made some carbides dissolve. The grain growth through HAZ zone venially affected the strength of alloy. The results of tensile test demonstrated that UTS increased by repair welding, 1%, 2% and 3% respectively. As the UTS of base metal was 727 MPa, the fracture phenomenon occurred. Furthermore, repair welding of mentioned alloy did not exceed more than three times.
    VL  - 5
    IS  - 2
    ER  - 

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Author Information
  • Department of Materials Engineering, Karaj Branch, Islamic Azad University, Karaj, Iran

  • Department of Materials Engineering, Karaj Branch, Islamic Azad University, Karaj, Iran

  • Department of Metallurgy and Materials Engineering, Iran University of Science and Technology (IUST), Tehran, Iran

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