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Advances in Mechanical Engineering pp 475–486Cite as

Microstructural Characterization of Ti-6Al-4V Alloy Fiber Laser Weldments

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Abstract

The quality of fiber laser welded specimens of Ti-6Al-4V alloy plates in butt joint is examined. A special kind of fixture is designed and fabricated for providing shielding gas. The microstructural analysis at various positions within heat-affected zone and in fusion zone are explored and its microstructural morphologies are compared. Due to the chronological distribution of temperature gradient, a nonhomogeneous microstructure is developed from fusion zone to base metal zone. Various kinds of microstructural morphology of martensitic structure, i.e., α′ martensite, massive α (αm), and blocky α are found in fusion zone. Also, the variations in amount of α′ martensite are found inside heat-affected zones. Maximum hardness is obtained in fusion zone due to the occurrence of higher quantity of α′ martensitic structure.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Lovely Professional University, Phagwara, Jalandhar, Punjab, India

    Chandan Kumar

  2. Department of Mechanical Engineering, IIT Guwahati, Assam, 781039, India

    Manas Das

Authors
  1. Chandan Kumar
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  2. Manas Das
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Correspondence to Manas Das .

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Editors and Affiliations

  1. National Institute of Technology Meghalaya, Shillong, Meghalaya, India

    B. B. Biswal

  2. National Institute of Technology Meghalaya, Shillong, Meghalaya, India

    Bikash Kumar Sarkar

  3. National Institute of Technology Arunachal Pradesh, Yupia, Arunachal Pradesh, India

    P. Mahanta

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Kumar, C., Das, M. (2020). Microstructural Characterization of Ti-6Al-4V Alloy Fiber Laser Weldments. In: Biswal, B., Sarkar, B., Mahanta, P. (eds) Advances in Mechanical Engineering. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-0124-1_43

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  • DOI: https://doi.org/10.1007/978-981-15-0124-1_43

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-15-0123-4

  • Online ISBN: 978-981-15-0124-1

  • eBook Packages: EngineeringEngineering (R0)

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