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An Experimental Investigation of Residual Stress Development during Selective Laser Melting of Ti-6Al-4V

Levkulich, Nathan Charles
http://rave.ohiolink.edu/etdc/view?acc_num=wright1515112797193544

Abstract Details

2017, Master of Science in Materials Science and Engineering (MSMSE), Wright State University, Materials Science and Engineering.
Selective laser melting (SLM) is an additive manufacturing (AM) process that gives rise to large thermal gradients and rapid cooling rates that lead to the development of undesirable residual stress and distortion. In this work, a number of different techniques (i.e., x-ray-diffraction, hole-drilling, layer-removal, and contour) were utilized to establish the effect of process parameters on residual stress development during SLM of Ti-6Al-4V. The measurements indicated that higher laser power, slower scan speed, smaller stripe width, reduced substrate overhang, and reduced build plan area each reduce the level of residual stress. In addition, the correlation between microstructure, crystallographic texture, and residual stress were investigated using electron backscatter diffraction (EBSD) and backscatter electron (BSE) imaging. The experimental results from this work provide a quantitative foundation for future simulations of residual stress evolution during SLM and provide an informed understanding of residual stress development that can be used for process planning and improvement.
Nathan Klingbeil, Ph.D. (Advisor)
Joy Gockel, Ph.D. (Committee Member)
Sheldon Semiatin, Ph.D. (Committee Member)
118 p.
Materials Science
materials science

Recommended Citations

Citations

  • Levkulich, N. C. (2017). An Experimental Investigation of Residual Stress Development during Selective Laser Melting of Ti-6Al-4V [Master's thesis, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1515112797193544

    APA Style (7th edition)

  • Levkulich, Nathan. An Experimental Investigation of Residual Stress Development during Selective Laser Melting of Ti-6Al-4V. 2017. Wright State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright1515112797193544.

    MLA Style (8th edition)

  • Levkulich, Nathan. "An Experimental Investigation of Residual Stress Development during Selective Laser Melting of Ti-6Al-4V." Master's thesis, Wright State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1515112797193544

    Chicago Manual of Style (17th edition)

wright1515112797193544
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© 2017, all rights reserved.
This open access ETD is published by Wright State University and OhioLINK.